Operating instructions Modular datalogger OTT...

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Operating instructionsModular dataloggerOTT DuoSens

We reserve the right to make technical changes and improvements without notice.

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Table of Contents

1 Scope of supply 5

2 Order numbers 5

3 Safety information 6

4 About these operating instructions 7

5 Introduction 8

5.1 Overview of DuoSens modular datalogger 10

6 Overview Starting up the DuoSens 11

7 Installing the DuoSens 12

7.1 Attaching the DuoSens 127.2 Overview of the pin-outs for the screw terminal strip 137.3 Connect sensors with RS-485 interface (2 core) 147.4 Connect sensors with SDI-12 interface 147.5 Connect sensors with impulse output 157.6 Connect sensors with status output 157.7 Connect sensors with voltage output 167.8 Connect sensors with current output 167.9 Connect temperature sensor Pt 100 177.10 Connect sensors with potentiometer (5 kOhm) 177.11 Connect sensors with RS-232 interface 187.12 Connect switching and voltage outputs 187.13 Attach communication device (modem) 197.14 Connect power supply to DuoSens 19

8 Establish communication connection between PC and DuoSens 20

9 Adjusting DuoSens operating parameters 22

9.1 Install DuoSens/LogoSens operating program 229.2 Adjusting DuoSens operating parameters 229.3 Entering general master data 279.4 Set COM communication interface 279.5 Set up LCD display/level monitoring function 409.6 Channel function settings 429.7 Sample interval settings 439.8 Setting analog sensors 439.9 Setting digital sensors 449.10 Setting serial sensors 459.11 Setting signal processing 489.12 Setting measurement output 539.13 Special function settings 55

10 Operating and setting DuoSens on location 57

10.1 Detecting and displaying instantaneous values (level monitoring function) 5710.2 Enter observer texts (extended level monitoring function) 6110.3 Scale instantaneous values/stored values (set offset) 6410.4 Display/set date and time 6510.5 Enter manual values into a manual sensor 66

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11 Reading out measured data 69

11.1 Reading out measured data via an RS-232 C connection 6911.2 Reading out measured data via an optical interface 6911.3 Reading out with remote data transfer using a modem 70

12 Installing a new DuoSens operating system 71

13 Alarm management 72

13.1 Input window function block alarm management 7213.2 Input window function block limit and status alarm 75

14 Protect DuoSens using a password 77

15 Deleting data memory 78

16 Date and Time Settings 78

17 Print terminal assignment plan 79

18 SDI-12 transparent mode 80

19 Error Messages 81

19.1 Internal error messages 8119.2 External error messages 8119.3 Error messages from sensors 8119.4 Error messages from processing modules 82

20 Note for disposing of old units 83

21 Maintenance 83

22 Technical data 84

Appendix A: Activate automatic, cyclical data transmission via 87ISDN D channel (active communication)

Appendix B: Detailed information and example PHP script 88

Appendix C: Declaration of conformity for DuoSens modular datalogger 89

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1 Scope of supply

� DuoSens – 1 modular datalogger with 4 physical input channels (1 x RS-485, 1 x SDI-12,2 x impulse/status), 4 MB measurement memory, RS-232 interface andinfra-red interface (IrDA), standard version with LCD display and jog shuttlein addition

– 1 Set of installation accessories (plug-in terminal strip, 4-pin; contact unit)– 1 Top hat rail HS 35; 15 cm long– 1 CD-ROM "OTT DuoSens Software" (only with standard version)– 1 Operating instructions– 1 Factory acceptance test certificate (FAT)

2 Order numbers

� DuoSens Basic version 55.551.007.9.2– without LCD display Var code O

Standard version 55.551.008.9.2– with LCD display and jog shuttle Var code O

� Expansions Basic version

2 Analog inputs 55.551.007.9.2for analog input signals Var code A – 0 ... 20 mA / 4 … 20 mA – 0 … 50 mV/0 … 1.25 V/0 … 5 V / 0 … 10 V– potentiometer 5 kOhm – Pt 100

1 RS-232 input 55.551.007.9.2for OTT sensors with RS-232 interface Var code S

2 analog inputs and 55.551.007.9.2 1 RS-232 input Var code B

� Expansions Standard version

2 Analog inputs 55.551.008.9.2for analog input signals Var code A – 0 ... 20 mA / 4 … 20 mA – 0 … 50 mV/0 … 1.25 V/ 0 … 5 V / 0 … 10 V– potentiometer 5 kOhm – Pt 100

1 RS-232 input 55.551.008.9.2for OTT sensors with RS-232 interface Var code S

2 analog inputs and 55.551.007.9.2 1 RS-232 input Var code B

� Accessories Modem connection line 97.961.069.9.5– 1.5 meter, 9-pin Sub-D socket/9-pin Sub-D plug

Data transfer line DuoSens/PC 97.961.068.9.5– 1.5 meter, 9-pin Sub-D socket/9-pin Sub-D socket

Optical OTT Duolink reading head 55.520.017.4.2

OTT IrDA-Link USB optical reading head 55.520.026.9.2

3 Safety information

� Read these operating instructions before using the DuoSens for the first time!Become completely familiar with the installation and operation of the DuoSensand its accessories.

� Note all the additional information on dangers given within the individual worksteps.

� Only use the DuoSens and it's accessories in the manner described in theseoperating instructions.

� Make sure that the point of installation is sufficiently protected against moisture(protection type IP 30)!

� Select the point of installation such that the ambient temperature never goesoutside the allowable temperature range of –40 °C … +70 °C!

� Do not open DuoSens! The connection of sensors, communication devices,power supply, switching contacts or additional components is only carried outvia the screw terminal strips/9-pin Sub-D plug connectors accessible from theoutside.

� Before connecting the power supply, check whether the wiring of all wires attached to the screw terminal strip has been correctly carried out.

� It is essential to comply with the electrical limits given in the "Technical Data"section.

� Only connect the DuoSens to a power supply with lower than 28 V direct current.

� Always use a galvanically separated safety low voltage for the mains supply.

� Do not make any changes or additions to the DuoSens.

� Have a defective DuoSens checked and repaired by the OTT repair centre.Never make any repairs by yourself under any circumstances.

Caution: With a complete full data memory in the DuoSens, afteran interuption of the operating voltage it can take a few minutesuntil communication is possible again.

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4 About these operating instructions

These operating instructions (version "03-0610") describe the DuoSens softwareversions

� Firmware (operating system) DuoSens from V 1.40.0� Operating program DuoSens/LogoSens from V 1.40.0

The software version of the DuoSens operating program can be found via the"Info" menu:

The software version of the DuoSens operating system can be seen in the windowwith the general master data after downloading data (see Chapter 9.3).

In Chapter 12 "Installing a new DuoSens operating system" you will find a description of an update of the DuoSens operating system.

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5 Introduction

The DuoSens is a datalogger especially conceived for hydrometry, meterology andenvironmental measuring technology.

In the basic version there are four physical input channels. The standard version ofthe DuoSens also has an LCD display and a jog shuttle. (The jog shuttle is a spe-cial operating button that can be turned and pressed.) On request, the DuoSens isavailable with analog and/or RS-232 expansion.

In the database of the DuoSens, 30 logical channels (+ 1 info channel) can bestored.

Plug-in screw terminal strips allow simple connection of sensors and the powersupply without having to open the device. An LED on the front shows the variousoperating states of the datalogger.

Configuration and parametrization are carried out using the "LogoSens/DuoSensoperating program" PC software. This software allows one to comfortably andflexibly tailor to a wide range of measurement requirements.

All inputs are equipped with an integrated overvoltage protection. The very lowpower consumption makes it possible to operate with solar power without prob-lem.

Together with a GSM modem (mobile radio modem), remote data transfer andremote parameter input is possible via the GSM cell phone network (GSM = globalsystem for mobile communications). The remote data transfer can be optionallycarried out via a dial-up telephone connection, by SMS text messages or using thepacket oriented mobile radio transmission service GPRS (general packet radioservice). In the same way, remote data transfer is also possible using a satellitetransmitter or a grid bound modem.

Furthermore, the DuoSens also has individually configurable alarm management:If particular events arise, the DuoSens generates an alarm independently andsends this via a modem, for example, to a control center. It is also possible to con-trol external devices via potential-free contact outputs.

Fig. 1: Modular datalogger DuoSens.

The illustration shows the standardversion without extensions.

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Fig. 3: Rear of the DuoSens withscrew terminal strip for voltagesupply and switching contacts.

The illustration shows the standardversion without extensions.

COM 1Serial interface

(RS-232)

Plug-in screw terminal strip for voltage supply

and switching contacts

Jog shuttle LCD display

Plug-in screw terminal strips for connecting sensors

LEDInfrared interface (IrDA)

Analog expansion

Fig. 2: Front of the DuoSens with thestatus LED, the infrared interface and

the plug-in screw terminal strip.

The illustration shows the basicversion with an analog extension.

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5.1 Overview of DuoSens modular datalogger

Sensor inputs� RS-485 interface (e.g. OTT RLS Radar Sensor, Sonicflow)� SDI-12 interface (e.g. Hydrolab Datasonde DS5, Hydrolab Minisonde MS5)� Impulse input� Status input (2 x 1 bit)

� 0 … 50 mV, 0 … 1.25 V, 0 … 5 V, 0 … 10 V voltage input *� (0) 4 … 20 mA input (current loop) *� Pt 100 (temperature sensor) * � 5 kOhm potentiometer *� RS-232 interface (OTT protocol, e.g. bubble sensor Nimbus) *

* only with analog/RS-232 expansion

Communication interfaces� RS-232 interface� Infrared interface (IrDA)

Communication protocols� OTT protocol� OTT HDR/OTT HDR 1200 (satellite transmission) � Crex code (satellite transmission) � terminal mode � SDI-12 transparent mode� FTP (File Transfer Protocol)� SMTP (Simple Mail Transfer Protocol)� HTTP GET/HTTP POST (Hypertext Transfer Protocol)

Outputs� potential-free switching output (switches, for example, via a relay modem,

sensor supply or alarm devices)� Voltage output for supply of sensors (UBat switched)

Measured value processing� Sample interval� Mean calculation� Totals formation� Scaling "ax + b"� Two-point scaling� Delta storage� Definition of a sensor delay time� Extreme value collection (minimum/maximum)� Filter functions� Extreme value recording� Virtual terminal/virtual sensor (logical channels)� Linearization table� Arithmetic function� Alarm management: Limit monitoring (threshold/gradient); Status alarm

Reading out/data transmission� Reading out on site via RS-232 and IrDA interface� Reading out via modem� Independent data transmission via modem, terminal adapter or satellite

transmitter� ISDN D channel data transmission possible (X.31)� Independent transmission of alarm messages via SMS (e-mail/fax)

Control elements� LCD display and jog shuttle*

* only DuoSens standard version

6 Overview Starting up the DuoSens

Starting up a DuoSens is done in a maximum of six steps:

1. Attaching the DuoSens; see Chapter 7.12. Connecting sensors; see from Chapter 7.23. If necessary: connect potential-free switching contacts; see Chapter 7.124. If necessary: install and connect communication device (modem); see

Chapter 7.135. Connect power supply; see Chapter 7.146. Configure DuoSens and set operating parameters; see Chapter 9

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7 Installing the DuoSens

7.1 Attaching the DuoSens

Requirements of the intended installation location:

� Sufficient protection from moisture (protection type IP 30).� Properly determined space for the electrical cables.� Permitted environmental temperature: –40 °C … +70 °C.� Standard top hat rail (HS 35) mounted at installation location.

The dimensions of the DuoSens can be found in Fig. 5.

Caution: Do not open the DuoSens during installation!

� Attach the DuoSens to the top hat rail as shown in Figure 4. Press the under -side of the DuoSens against the top hat rail until it clicks into place.

� Deinstall DuoSens: Push locking device downwards with a screwdriver and pullthe DuoSens slightly forwards at the same time. Remove the DuoSens upwardsfrom the top hat rail.

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53 14,5 140

100

Fig. 5: DuoSens dimensions.

Fig. 4: Installing the DuoSens on thetop hat rail (left)/uninstalling (right).

Top hat rail Locking device

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7.2 Overview of the pin-outs for the screw terminal strip

Fig. 6: Terminal assignment of theplugin screw terminal strips.

The illustration shows the basicversion with an analog extension.

1 5

96

RS-232 interface(communication

(COM 1) and sensor input (C/D; E/F *)

Terminal stripA, B + C … F *

Connectionof sensors

UBa

t 0 V

(GN

D)

UBa

t +12

V

UBa

t 0 V

(GN

D)

Terminal strip LVoltage supply

DuoSens

431 2

Switc

hing

con

tact

2 0

V

Switc

hing

con

tact

2 U

Bat

Switc

hing

con

tact

1 –

Switc

hing

con

tact

1 +

Terminal strip MSwitching contacts

Switching contact 1max. 28 V/10 mA

Switching contact 2UBat/max. 10 A

6 DSR7 RTS8 CTS9 RI

1 CD2 RxD3 TxD4 DTR5 GND

* C … F only with analog expansion

* sensor input only with RS-232 expansion

431 2431 2

7.3 Connect sensors with RS-485 interface (2 core)

7.4 Connect sensors with SDI-12 interface

Screw terminal strip ASD

I-12

Dat

a

SDI-1

2 G

ND

431 2

Screw terminal strip A

RS 4

85 B

RS 4

85 A

431 2

RS 4

85 A

RS 4

85 B

431 2

general, Parsivel, … Kalesto

Fig. 8: Connecting sensors with SDI-12interface to the DuoSens (e.g. Hydrolab

Datasonde DS5/DS5X).

Further information can be found in the ope-rating instructions of the respective sensor.

A sensor with SDI-12 via RS-485 interface(e.g. bubble sensor CBS) is attached as

shown in Chapter 7.3.

Fig. 7: Connecting sensors with RS-485 inter-face and SDI-12 via RS-485 interface (OTTprotocol) to the DuoSens (e.g. radar sensor

Kalesto or Present Weather Sensor Parsivel).


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7.5 Connect sensors with impulse output

7.6 Connect sensors with status output

Screw terminal strip B

431 2

(+)

(–)

(+)

(–)

Status input

Screw terminal strip B

431 2

(+)

(–)

(+)

(–)

Impulse input

Fig. 10: Connecting sensors with status out-put to the DuoSens (e.g. door contact).

The DuoSens has two independentstatus inputs (B1-2 and B 3-4).


Fig. 9: Connecting sensors with impulse out-put to the DuoSens (e.g. precipitation sensor

Pluvio or Present Weather Sensor Parsivel).

The DuoSens has two independentimpulse inputs (B1-2 and B 3-4).


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7.7 Connect sensors with voltage output *

7.8 Connect sensors with current output *

* only with analog expansion.

Screw terminal strip C … F

Uin

+

Uin

–

431 2


Uin

+

Uin

–

431 2

0 … 50 mV / 0 … 1.25 V0 … 5 V / 0 … 10 V

Fig. 12: Connecting sensors with currentoutput to the DuoSens (e.g. shaft encoder

SE 200 or pressure probe ODS 4 K).


It is important to note:

– with version 1: Do notsupply sensor externally!

– with version 2: Supply sensorexternally in addition!

With a DuoSens voltage supply of higherthan 24 Volt (max. 28 V): a sensor con-

nected in accordance with version 1 mustbe suitable for voltages higher than 24 Volt!


I in

++2

4 V

I in

–

431 2


I in

+

I in

–

431 2

Version 2: 0 (4) … 20 mACurrent loop provided externally

Version 1: 0 (4) … 20 mACurrent loop provided internally

Fig. 11: Connecting sensors with voltageoutput to the DuoSens (e.g. ODS 4 K).


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7.9 Connect temperature sensor Pt 100 *

7.10 Connect sensors with potentiometer (5 kOhm) *

* only with analog expansion.


Potentiometer with 5 kOhm

431 2

Fig. 14: Connecting sensors with potentio-meter (5 kOhm) to the DuoSens.


ϑ


Pt 100

431 2

Fig. 13: Connecting temperaturesensor Pt 100 to the DuoSens.


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7.11 Connect sensors with RS-232 interface *

7.12 Connect switching and voltage outputs

* only with RS-232 expansion!

Screw terminal strip M

431 2

Switc

hing

con

tact

2 0

V

Switc

hing

con

tact

2 U

Bat

Switc

hing

con

tact

1 –

Switc

hing

con

tact

1 + Switching contact 1: max. 10 mA

(galvanically separated semiconductorswitch)

Switching contact 2: max. 10 A(switched battery voltage)

Fig. 16: Connecting switching andvoltage outputs to the DuoSens.

Please note the maximum ampacity.

RS-232 interface C-D, E-F

1 5

96

6 DSR7 RTS8 CTS9 RI

1 CD2 RxD3 TxD4 DTR5 GND

Fig. 15: Connecting sensors withRS-232 interface to the DuoSens

(e.g. bubble sensor Nimbus).

A variety of sensors with RS-232interface only require a connection

with pins 2, 3 and 5.


7.13 Attach communication device (modem)If requested, a serial (grid bound) modem, a GSM modem (mobile phone modem)or a satellite communication unit can be connected to the DuoSens:

� Connect RS-232 interface of the DuoSens with modem/satellite communicationunit using a standard modem connection line (accessory).

� Optional: connect the supply voltage of the modem using switching contact 2(screw terminal strip M 3-4). (The modem is not permanently supplied with volt-age as a result ➝ reduces the electrical consumption of the measurement station.The DuoSens switches the modem on during defined time periods and/or whendata transfer takes place.)

7.14 Connect power supply to DuoSens

– + – + – 1 2OUTPUTPANELAKKU

U Bat

0 V

U Bat

+12

V

Screw terminal strip L Terminal strip PCU 12

431 2

Fig. 19: Connecting voltage supply, forexample to a power control unit PCU 12.

The PCU 12 is the standard voltagesupply from OTT.

Alternatively to PCU terminal 1 (loaddisconnect with battery voltage 2 7.5 V)

terminal 2 can also be used (load dis -connect with battery voltage < 10.5 V).

Fig. 18: Connecting serial modem to theDuoSens via modem connection line.

Fig. 17: Modem connection line.

(9-pin Sub-D socked to 9-pin Sub-D con-nector; PIN 2 and PIN 3 each directly con-nected; for position of the RS-232 interfaceon the DuoSens see Fig. 3; for pin assign -

ment of the RS-232 interface see Fig. 6)

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8 Establish communication connection between PCand DuoSens

In Chapters 9 and 11 to 18 the establishment of a communication connectionbetween the DuoSens and a PC is a pre-requisite for the following steps. Thefollowing description illustrates the setup of this communication link and its variations.

Hardware and software requirements: current standard PC with RS-232 interfaceor USB interface (desktop/tower or notebook design). Operating system: fromWindows 2000 (SP4).

Additional (accessories):

� OTT IrDA-Link USB reading head or� OTT Duolink reading head 1) or� Data transfer line DuoSens/PC

1) with PCB version b; see label on the connection line

The communication between the DuoSens and a PC is made with the OTT IrDA-Link USB/OTT DuoLink reading head non-contact with invisible infrared light(IrDA interface).

Setting up a communication link with an OTT IrDA-Link USB read-ing head� Connect the OTT IrDA-Link USB reading head to a USB interface on the PC.

(USB interface drivers must be installed – see separate installation instructions.)� Place the OTT IrDA-Link USB reading head on the DuoSens infrared interface

(see Fig. 2).� Start the DuoSens/LogoSens operating program.� Select the communication path IrDA – OTT IrDA-Link in the DuoSens/LogoSens

operating program.

Set up a communication link with an OTT Duolink reading headas follows

� Connect the OTT Duolink optical reading head to a serial PC interface(COM1/COM2).

� Direct the OTT DuoLink reading head at the DuoSens infrared interface (seeFig. 2).

� Start the DuoSens/LogoSens operating program.� In the DuoSens/LogoSens operating program, select the communication path

IrDA – OTT DuoLink and the serial interface used (COM1/COM2).

Set up a communication link with a data transfer line as follows

� Connect data transfer line (9-pin Sub-D socket to 9-pin Sub-D socket; PIN 2and PIN 3 each crossed) to a serial interface of the PC (COM 1/COM 2).

� Connect data transfer line to the serial communication interface of the DuoSens(COM 1).

� Start the DuoSens/LogoSens operating program.� In the DuoSens/LogoSens operating program, select the communication path

RS-232/V.24 and the serial interface used (COM1/COM2).

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Note

� Change the language of the DuoSens/LogoSens operating program if necessary:Press the F3 function key (repeatedly) until the desired language appears.

� The infrared interface of the DuoSens has a radiation angle of approx. ±15 °.� The integrated infrared interface of a PC (standard for many notebooks) can

only be used with the Windows 95 and Windows NT operating systems!

Caution: With a complete full data memory in the DuoSens, afteran interuption of the operating voltage it can take a few minutesuntil communication is possible again.

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9 Adjusting DuoSens operating parameters

To set the DuoSens operating parameters you need the PC softwareDuoSens/LogoSens operating program (WBSLA0.exe). This software is containedon the CD-ROM DuoSens software (accessory).

Hardware and software requirements: current standard PC with RS-232 interfaceor USB interface (desktop/tower or notebook design). Operating system: fromWindows 2000 (SP4).

9.1 Install DuoSens/LogoSens operating program

Install the DuoSens/LogoSens operating program as follows

� Insert CD-ROM ➝ Start | Execute I d:\Software\English\setup.exe(d = CD-ROM drive; alternative: \Deutsch\ or \Français\ or \Español\ forother languages).

� Follow the installation instructions on the screen.

9.2 Adjusting DuoSens operating parameters

Adjust the DuoSens operating parameters using a PC as follows� Set up the PC/DuoSens communication link (see Chapter 8).� If you have not already done so: Connect DuoSens to operating voltage. After

a few seconds, the DuoSens is ready to use (DuoSens basic: LED on the frontblinks and then goes out; DuoSens standard: LCD display shows various messages and then goes out).

� Start the DuoSens/LogoSens operating program.� Select the Device Function DuoSens menu.

Fig. 20: Start window of the software"DuoSens/LogoSens operating program".

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� Select the Device Function DuoSens menu.� Select the function "New configuration" in the "File" menu.

The DuoSens is configured by creating logical channels. Each channel is visible ina tree diagram on the left side of the window. You can easily drag channel func -tions from the function list to the "tree" with "drag & drop". For example, to createa new channel, drag the "new channel" function block in the "channel" register tothe white area of the tree diagram.

Caution. Please observe the following rules when creating aconfiguration:� Assign each channel number only once.� Follow this configuration sequence: "Measurement cycle" * ➝ "Measurement

module" * ➝ "Processing" ➝ "Instantaneous value" ➝ "Limit" ➝ "Save" ** this function block is compulsory.

� If the "Instantaneous value" function block is missing, the instantaneous valuesare not shown in the LCD display (DuoSens standard version) and in the"Instantaneous values" function of the operating program (DuoSens basic version).

� End each channel with "Store".� Changing a configuration will delete the measurement memory!� Configure each DuoSens independently. Use the functions "Configuration",

"Load" and "Store" to save the configuration and to transfer it to otherDuoSens units.

Caution: The DuoSens processes the individual function blocks in the tree dia-gram sequentially from top to bottom! It is in principle impossible to execute morethan one function at the same time. It is therefore necessary to add together themeasuring times of all sensors connected. The sum of these measuring times con-stitutes the shortest possible query interval.

The DuoSens is parametrized by entries within a function (right side of the window).If only entries or changes are made here, the measurement memory will remainintact with each change.

Fig. 21: Creating a new channel

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Save/load DuoSens configuration

The functions Load and Save are provided to archive the DuoSens configurationon a PC. In this way, for example, you can provide multiple DuoSens units withthe same configuration.

To store a configuration� Select the Configurations | Store menu or main window ➝ the operating pro-

gram saves the configuration under the name and number of the DuoSens.When changes are made to a configuration that has already been stored, confirm in the Warning window, This configuration name already exists! Over -write? with yes (otherwise, save the configuration under another measurementstation number).

To load a configuration, proceed as follows� Select Configurations | Load menu or window.� If a configuration is already open: in the Confirmation, Ignore changes?

window, confirm with yes (save configuration first if required).� In the Stored DuoSens Configurations window, select the configuration required

by double-clicking it ➝ the operating program loads the configuration.

Reading/programming the DuoSens configuration

The Read function loads the configuration from the DuoSens to the operating pro-gram. The Program function programs the configuration created in the operatingprogram into the DuoSens.

To read in a configuration:� Select the communication path and transmission rate for reading in in the main

window: – RS-232 C/V.24 Data transmission line (see accessories)– IrDA OTT DuoLink optical reading head (see accessories)– IrDA OTT IrDA-Link optical reading head (see accessories)– IrDA Linkit adapter Infrared interface adapter– IrDA built-in integrated optical interface (e.g. notebook; only

Windows 95 and Windows NT)– AT modem/adapter serial modem or terminal adapter– ISDN CAPI 2.0 ISDN PC communication card with CAPI interface– COM 1 … 99 "COM" interface of the PC used– auto … 115200 Transmission speed standard: "auto"

� For communication path RS-232 C/V.24 and IrDA variants: Select "DuoSens |Read" menu or main window ➝ the operating program reads the configurationfrom the DuoSens. For a configuration that has already been opened, confirmthe "Reject Changes?" security query with "yes" (if necessary, store configurationbeforehand).

� For communication path AT modem/adapter and ISDN CAPI 2.0: Select"DuoSens | Read" menu or main window ➝ the operating program opensthe DuoSens AT modem/adapter window. For a configuration that has alreadybeen opened, confirm the "Reject Changes?" security query with yes (if neces-sary, store configuration beforehand).

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� Enter communication parameters:

� Dial no. Telephone number of the modem/adapterconnected to the DuoSens

� Extension Dialling (pre) � e.g. 0 or 0W for an outside line from anextension (modem in PC)

� Default AT-modem � Initialization of the modem in the PC withstandard initialization string "ATQ0E0V1S0=0"and RTS/ CTS flow control

� Initializing Initialization string with standard AT modemnot selected; for further information see modemhandbook

� Flow control Initialization string with standard AT modemnot selected; NONE or RTS/CTS (Ready toSend/Clear to Send handshake control); forfurther information see modem handbook

� Inactivity timeout (hold line) Maintains the connection to the DuoSens for upto 180 seconds during inactivity (renewed reading/programming).

� Confirm with "OK" ➝ the operating program establishes a connection andreads the configuration from the DuoSens.

To program a configurationCaution: The measured values stored in the DuoSens are permanently lost whenprogramming a new configuration! If necessary read out measured values beforeprogramming!

� Select the DuoSens| Program menu or main window. In the window Warning,configuration changed! Reset DuoSens and delete data memory? Confirm withyes ➝ the operating program programs the configuration into the DuoSens.

Importing/exporting the DuoSens configuration

To transfer a DuoSens configuration, via diskette or E-mail for example, the func -tions Import/Export are available. Likewise, a configuration can be sent via Exportas an XML file to the Hydras 3 application software. In the process, the Hydras 3application software automatically applies all of the measurement stations/sensorconfigurations to a Hydras 3 workspace.

Fig. 22: Input window"DuoSens AT modem/adapter".

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Avaliable Export/Import formats

� Export ("BIN" file)� Export to a text file� Export for the OTT Communication Manager

(special application – see separate operating instructions)� Export for the Hydras 3 application software

� Import ("BIN" file)

The operating program stores all necessary data of a configuration depending onthe export type in its own "*.BIN", "*.TXT" or "*.XML" file.

Export a configuration as follows ("*.BIN" file)This export type is required to transfer an DuoSens configuration as a "*.BIN" file.The configuration can be re-read via the function Import to the DuoSens operatingprogram.

� Select the File | Export menu.� In the DuoSens Export Configuration window, edit the file name if necessary,

select the storage location and click on Store ➝ the operating program storesthe configuration in a "*.BIN" file.

Note

� The file name of the "*.BIN" file is arbitrary. The operating program proposesa combination of measurement station number and measurement station name(see Inputing General Master Data).

To export a configuration (text file)This export type is required to transfer a DuoSens configuration as a "*.TXT" file.This "*.TXT" file can be opened with any text editor or text processing program.

� Select the File | Export Textfile menu.� In the DuoSens Configurations window, edit the file name if necessary, select

the storage location and click on Store ➝ the operating program stores theconfiguration in a "*.TXT" file.

Note

� The file name of the "*.TXT" file is arbitrary. The operating program proposes acombination of measurement station number and measurement station name(see Inputing Entering Master Data).

To export a configuration (Hydras 3)This export type is required to transfer a DuoSens configuration to the Hydras 3application software. This "*.XML" file is read in via the Hydras 3 function File |Import Station Configuration (XML).

� Select the File | Export Hydras 3 (XML) menu.� In the DuoSens XML Configuration window, check the file name, select the

storage location and click on Store ➝ the operating program stores the con -figuration in an "*.XML" file.

Note

� The file name of the"*.XML" file is arbitrary. To avoid affecting later data trans-fer, it should not be changed. The operating program proposes a com binationof measurement station number and measurement station name along with theending "*.STATION.XML" (see Entering General Master Data).

26

To import a configuration� Select the File | Import menu file.� In the DuoSens Import Configuration window, select the appropriate "*.BIN" file

and click on Open ➝ the operating program reads in the con figuration from the.BIN file. (Prior to this, store any configuration that is already open).

9.3 Entering General Master Data

� Number Measurement station number, 10 characters (alphanumeric)� Name Measurement station name, max. 40 characters

(alphanumeric)� Timezone (Station) Time difference from UTC/GMT time (local time at 0th lon-

gitude; UTC = Coordinated Universal Time; GMT = Green-wich Meantime; MEZ = UTC + 1 h). This infor mation isnecessary for communication via Hydrocom satellite com-munication unit and for GPRS time synchronization.

Other displays� Date and time of the last DuoSens configuration

� Date and time of the last DuoSens operating parameteradjustment

� Version Software version of the DuoSens operating system

9.4 Setting up remote data transfer(communication interface COM1)

If a modem (grid bound or GSM), a terminal adapter or a Meteosat/GOES satel-lite transmitter is connected to the serial RS-232 interface COM1, remote datatransfer of measurements and information data is possible. Several transfer proce-dures are available:

Passive remote data transfer:� data retrieval using a central evaluation point (OTT Hydras 3) 1) 2)

Active remote data transfer:� automatic, cyclical data transfer using SMS text messages 3)

� automatic, cyclical data transfer using the ISDN D-channel (X.31) 2)

� automatic, cyclical data transfer using a dial-up telephone connection 1) 2)

� automatic, cyclical data transfer using the packet oriented mobile radiotransmission service GPRS 4)

� automatic, cyclical data transfer using METEOSAT/GOES satellite transmitters

With the active transfer processes, the DuoSens can – if certain events occur (e.g.exceeding a certain water level) – change the transmission cycles in accordancewith defined rules. See also Chapter 13, “Alarm management”.

A modem/terminal adapter also allows operating parameters to be set remotely.1) Modem (grid bound or GSM) 2) ISDN terminal adapter 3) GSM modem4) GSM modem, GPRS compatible

Last parameterdownload

Last configurationdownload

Fig. 23: General master data input window.

27

28

Setting general communication parameters forremote data transfer

Select function block “Communication interface COM1”, “General” tab and setthe required parameters:

� Baudrate Transmission speed DuoSens ↔ modem/terminaladapter

� Adress no./PIN Individual address number of the DuoSens (currentlynot used – factory setting: 0000)/PIN for passwordprotection of the LCD display (four digit > 0000).See Chapter 9.5

� Password Protects against unauthorized access to the DuoSensby the operating program. See Chapter 14

� M 1-2 or M 3-4; switches the selected switching orvoltage output, for example to switch a modempower supply on or off (in this application case:M 3-4);

� Activation times 1/2 Switching time 1 and 2 (29:59 = inactive)Activation times 3/4 Switching time 3 and 4 (29:59 = inactive)

� Duration Duration of activation (1 … 1440 minutes)� Lag time (s) Waiting period after a switching operation before the

DuoSens continues with processing the subsequenttask. Value range 0 … 99 seconds. This enables, forexample, the required “checking in” of a GSMmodem to the cell phone network before remote datatransfer.

If at least one activation time is set with an appropriate duration, the DuoSens isready for a passive remote data transfer. At the same time, within this time period,remote access with the operating program is possible (maintenance windows). Foractive remote data transfer, no activation times are necessary. The DuoSens auto-matically switches the switching output when a transfer is due. The “Activationcontrol via switching output at terminal block” and the required lag time must beset in all cases!

Example: With the settings shown in Figure 24, the voltage output (M 3-4) isswitched on daily at 10:00 and 18:00 for 60 minutes. The lag time at10:00/18:00 is 30 seconds in each case.

Activation controlvia switching outputat terminal block

Fig. 24: Input window "Communicationinterface COM1", "General" tab.

The lower part of the input window withthe activation control is only visible if the"� Modem/Terminal adapter connected

to RS232C" function is activated (seeFig. 25). In this case, the “METEOSAT/

GOES” tab is not shown.

Setting modem initialization and GSM functions for remote datatransfer

Select function block “Communication interface COM1”, “Modem/adapter” taband set the required parameters:

� Activate “� Modem/terminal adapter connected to RS232C” (hides the“METEOSAT/GOES” tab and reveals the “Data transmission” tab at thesame time)

� Initializing Initialization string for the modem connected to theDuoSens. A pre-defined initialization string can be select-ed via “Preset for”. This initialization string can be modi-fied as required (assumes sound knowledge of the ATmodem commands). For further information, see themodem handbook. If needed support is available from theOTT HydroService.

� Preset for Selection list with initialization strings for themodems/terminal adapters distributed by OTT:– Hayes compatible, TA+DAA, ...

(general standard initialization string)– OTT TA+ODD– Siemens TC35iT– WAVECOM Fastrack / GenPro– WAVECOM Fastrack / GenPro (GPRS)– Motorola G24– eDevice eDBox300– Microlink 56k i

� Dial no. (Station) – Grid bound modem/terminal adapter: dial no. of thetelephone line that the modem/terminal adapter is con-nected to;

– GSM modem: dial no. of the SIM card inserted in themodem.

(the DuoSens does not use this number, but does include itin an export of a DuoSens configuration as an XML file. Itis therefore available, for example, in the application soft-ware OTT Hydras 3)

� � GSM-modem Activate if the modem connected is a mobile radio modem� Dial no. of the SMS service center or of Large Account

access of the cell phone network provider in the case thatthe SMS data transfer is carried out via a Large Accountaccess number. (The SMS-C phone number is normallyalready saved on the SIM card ➝ in this case, leave theentry field empty.)

GSM servicecenter –SMS-C phone no.

Fig. 25: Input window “Communicationinterface COM1”, “Modem/Adapter” tab.

The complete input window is only visibleif checkboxes “� Modem/terminaladapter connected to RS232C” and

“GSM modem” are activated.

29

� For alarm message: The e-mail phone number of the GSMservice center (e.g. in Germany 8000 for T-Mobile, 3400for Vodafone). In an alarm situation, the DuoSens sendsan SMS text message to the service center of the cellphone network provider. The cell phone network providerconverts this SMS text message into an e-mail (e-mail viaSMS).

� For alarm message: The fax prefix number of the GSMserv-ice center (e.g. in Germany 99 for T-Mobile andVodafone). In an alarm situation, the DuoSens sends anSMS text message to the service center of the cell phonenetwork provider. The mobile network operator convertsthis SMS text message into a fax (FAX via SMS).

� SIM PIN PIN (Personal Identification Number) of the SIM card. For-mat: 4-position. (The PIN for a SIM card can, for example,be de-activated in a cell phone. This is a security risk. Inthis case, leave the entry field empty -> the operating pro-gram repre-sents a deactivated SIM PIN as “0000” whenreading in the configuration again.)Caution: If the PIN is entered incorrectly, after the thirdattempt to activate the GSM modem the SIM card is auto-matically locked. In this case, the SIM card must beunlocked with the PUK e.g. in a cell phone.

Setting up passive remote data transfer:

Passive remote data transfer requires the following settings:– “� Modem/terminal adapter connected to RS232C” activated– Suitable initialization string set for the modem/terminal adapter– If the modem is not permanently supplied with electricity: “Activation control via

switching output at terminal block” set to “M 3-4” and at least one activation timewith the necessary duration set.

The connection is made by the operator in the central evaluation point.

Passive remote data transfer is independent of whether any additional activeremote data transfer is set up and avail-able. Avoid overlapping time settings foractive and passive remote data transfer!

GSM servicecenter – FAX no.prefix

GSM servicecenter – e-mailphone no.

30

Setting up active remote data transfer:

Select function block “Communication interface COM1”, “Data transmission” taband first set the data transmission mode:

� – SMS (GSM): data transmission by SMS text mes-sage

– Line (analog/ISDN/GSM): data transmission bydial-up telephone connection (grid bound orGSM)

– X.31 (ISDN D channel). Data transmission viaISDN D channel (X.31)

– GPRS (GSM): data transmission using the packetoriented mobile radio transmission service GPRS

Data transmission by SMS text messageThe DuoSens automatically and cyclically sends SMS text messages with measure-ments via a GSM modem. It is possible for the direct receiver to be a Large Accountof a cell phone network operator or a PC with GSM modem and the Hydras 3 Rxsoftware. The transmission of the measurements is carried out in the OTT protocolbinary. The SMS text messages transmitted cannot be read as plain text in contrastto conventional text messages (coded).

Set the required parameters for data transmission by SMS text message:

� Cycle Standard Time interval in which the DuoSens transmits dataautomatically by SMS.Value range: 1 minute … 24 hours

� Cycle Limit 5 time intervals defined in addition in which theDuoSens transmits data independently by SMS onreaching particular limit events (see Chapter 13.2).Value range: 1 minute … 24 hours

� Dial no. Telephone number of the receiver modem or the“Large Account”.

� The maximum number of additional text messages forthe situation that one SMS is insufficient for the amountof data to be transmitted (approx. 40 measurementsper SMS)

� Data format Transmission protocol of the data transmission: “OTTprotocol binary” (“OTT protocol binary CRC” is notavailable for data transmission by SMS)

Maximum number ofadditional SMS pertransmission

Fig. 26: Input window “Communicationinterface COM1”, “Data transmission”

and “General” tabs. This input window isonly visible if the check box “� Modem/terminal adapter attached to RS232C” is

activated (see Fig. 25).

Self timed data trans -mission mode

31

� Channel(s) transmitted The DuoSens transmits the measurements of the acti-vated channels. “All channels” button: Activate allchannels present. Caution: If further channels are cre-ated subsequently, these have to be activated in addition!

Select “Timing control” and set time offset if required:

� The transmission intervals defined in “Cycle Standard”are shifted by the “Transmission start time offset”.Example: With the settings in Figures 26 and 27, thedata transmission takes place daily at 01:00, 09:00and 17:00.

NoteThe validity of the SMS text message with measured values is 4 days.

Data transmission by dial-up telephone connectionThe DuoSens automatically and cyclically establishes a telephone dial-up connec-tion via a modem (grid bound or GSM) or an ISDN terminal adapter. The directreceiver must be a PC with suitable modem and the OTT Communication Managersoftware. The transmission of the measurements is carried out with the OTT protocolbinary or the OTT binary CRC protocol.

Set the required parameters for data transmission by dial-up telephone connection:

� Cycle Standard Time interval in which the DuoSens transmits dataautomatically by dial-up telephone connection. Valuerange: 1 minute … 24 hours

Fig. 28: Input window “Communicationinterface COM1”, “Data transmission” and

“General” tabs. This input window is onlyvisible if the check box “� Modem/

terminal adapter attached to RS232C”is activated (see Fig. 25).

Transmission starttime offset


and “Timing control” tabs.

32

33

� Cycle Limit 5 time intervals defined in addition in which theDuoSens transmits data independently by dial-up tele-phone connection on reaching particular limit events(see Chapter 13.2). Value range: 1 minute … 24 hours

� Dial no. Telephone number of the receiving modem /terminaladapter

� Data format Transmission protocol of the data transmission: “OTTprotocol binary” or “OTT protocol binary CRC”. Theselection of the “OTT protocol binary CRC” reveals anadditional tab.

� Number of dialling attempts until the modem/terminaladapter of the receiving station responds and the timebetween dial-ling attempts in seconds

� Channel(s) transmitted The DuoSens transmits the measurements of the acti-vated channels. “All channels” button: Activate allchannels present. Caution: If further channels are cre-ated subsequently, these have to be activated in addition!

Select “Timing control” and set time offset if required:

� Mode for the transmission control– “---“: the DuoSens transmits with a fixed time pattern

defined under “Cycle Standard”.– “Start“: the DuoSens transmits with the fixed time

pattern defined under “Cycle Standard”. In addition,the start time is shifted by the “Transmission starttime offset”.

– “Start and duration“: As “Start”, but in addition thelength of the transmission time slot is defined.

� The transmission intervals defined in “Cycle Standard”are shifted by the “Transmission start time offset”.Example: With the settings in Figures 28 and 29, thedata transmission takes place daily at 01:00, 09:00and 17:00.

� Length of the transmission time slot in seconds

� The data transmission stops automatically n secondsbefore the end of the transmission time slot.

Transmission endsecurity (stop before)

Transmission timeslot length [s]


Transmission Control


and “Timing control” tabs.

No. of dia-lings/Pause

34

Optional: Select the “OTT protocol binary CRC” tab and set the required parame-ters:

Settings for the binary, CRC controlled OTT protocol. (CRC = Cyclic RedundancyCheck. The cyclical redundancy check is a process for determining a test value fordata in order to be able to recognize errors in transmission.)

� Acknowledgement active

Waiting time during which the acknowledgementmust occurNumber of repetitions with unsuccessful acknowl -edgement of a data transmission.

� Transmits the accumulated info data in addition tothe measured data.

� Sends the data from the last data transmission inaddition.

� 0 (not used)

Data transfer using the packet oriented mobile radio transmissionservice GPRSThe DuoSens transmits measurements automatically and cyclically using a GPRScompatible GSM modem and packet oriented mobile radio transmission. For this,the TCP/IP protocols (Transmission Control Protocol/Internet Protocol), HTTP(Hypertext Trans-fer Protocol), FTP (File Transfer Protocol) and SMTP (Simple MailTransfer Protocol) can be selected. The immediate receiver is an appropriate server,depending on the protocol used. In the case of FTP, the receiver can also be anOTT Linux Box. With the HTTP protocol, a PHP script must be installed on thereceiving server (PHP = hypertext preprocessor, script language) that receives thedata, prepares and distributes them. With the FTP, SMTP and HTTP POST proto-cols, the DuoSens transmits all measured values that have been recorded since thelast successful transmission time; for the HTTP GET protocol, the last saved value.

The packet oriented mobile radio transmission GPRS also allows aserver based time synchronization of the DuoSens (also with a PHP script).

Generally, with remote data transfer by GPRS, it should be noted that the avail-ability of the mobile radio transmission by the network provider is not guaranteed.The availability is dependent on various conditions, for example the concurrentuse by multiple users within a network cell. Also, good GSM network coverage(high signal strength display on a cell phone) is no indicator of the availability ofthe GPRS service.

Time synchronisationcorrection

� Redundant over-lapping data

� Transmit INFOdata (Observer, ...)

� AcknowledgetransmissionsAcknowledgetimeout [s]Transmissionrepetitions

Fig. 30: Input window “Communicationinterface COM1”, “Data transmission”and “OTT protocol binary CRC” tabs.

35

� Cycle Standard Time interval in which the DuoSens transmits dataautomatically by GPRS.Value range: 1 minute … 24 hours

� Cycle Limit 5 time intervals defined in addition in which theDuoSens transmits data independently by GPRS onreaching particular limit events (see Chapter 13.2).Value range: 1 minute … 24 hours

� The transmission intervals defined in “Cycle Standard”are shifted by the “Transmission start time offset”.Example: With the settings in Figure 31, the datatransmission takes place daily at 01:00, 09:00 and17:00.

� Data format The required data format is dependent on the receiverand protocol type used. See table.

� Protocol type FTP, SMTP, HTTP GET or HTTP POST� Sends the measured values (and info data) from the

last data transmission in addition.� Channel(s) transmitted The DuoSens transmits the measurements of the acti-

vated channels. “All channels” button: Activate allchannels present. Caution: If further channels are cre-ated subsequently, these have to be activated in addition!

� As well as the actual measurements, transmits theaccumulated info data, e.g. Observer registration anderror messages

Receiver Protocol Data format– OTT Hydras 3 Rx FTP/SMTP OTT protocol binary (XL)– OTT Linux-Box +

Kisters SODA box FTP OTT protocol binary– OTT Linux-Box + PC with

OTT Communication Manager FTP OTT protocol binary– FTP Server + Kisters Software FTP ZRXP– OTT NetView HTTP POST OTT MIS– HTTP Server with PHP-Script HTTP POST OTT MIS (or alternative)– HTTP Server with PHP-Script HTTP GET OTT MIS– FTP Server + OTT Hydras 3

(Standard, Pro) with Scriptjob FTP OTT MIS

– OTT Hydras 3 Rx SMS OTT protocol binary

� Transmit INFOdata (Observer, ...)

� Redundant(overlapping) data



and “General” tabs. This input window isonly visible if the check box “� Modem/terminal adapter attached to RS232C” is

activated (see Fig. 25).

Select “Operator” tab and set the required parameters:

� Operator name Select the mobile radio network operator for the SIMcard (inserted in the GSM modem) from the selectionlist. The selection list is sorted by country. The applic -able network access and the user name and the pass-word (if required) is provided automatically by theoperating program in this way. Alternatively, enter anyoperator name and the respective settings manually.The settings required can be obtained from your GSMmobile radio network operator.

� Access Point Name Access point (APN = Access Point Name) of themobile radio network operator.

� User name Enter if required� Password Enter if required

Select “FTP” tab and set the required parameters:

� User name The login name of a user registered on the FTP server.� Password Password of the registered user. For security reasons

the window does not show the password entered in areadable form.

� Server name IP address or URL of the FTP server� Server path Path to the (sub) directory of the FTP server. When

using the root directory, leave the entry field blank.(use “/” separator instead of “\”).

� Port Giving the port allows directing to a specific TCP/IPcommunication interface. Standard port for FTP: 21.

� � Passive FTP Activates the “Passive Mode” of the FTP protocol. Thismode is necessary with certain network configurations(e.g. if a firewall does not allow active FTP). PassiveFTP is only possible with the WAVECOM Fastrack /GenPro (GPRS) modems.


and “FTP” tabs.


and “Operator” tabs.

36

� Allows data transmission to be carried out to a sec-ond, redundant FTP server. Selecting this reveals an“FTP 2” tab. The access data for the second FTP serverare entered in this window. In addition, a selectionbetween “Mirror (always)” and “Fail over (backup)” ispossible. In the first case, the data transmission is car-ried out permanently on both servers, whereas in thesecond case it is only after an unsuccessful transmis-sion.

� Load/Save Saves the parameters entered in this window locally onthe PC. With “Load”, with subsequent configuration ofa DuoSens the parameters can simply be called

Select the “SMTP” tab and set the required parameters:

� User name The login name of a user registered on the mail server(e-mail address or user ID)

� Password Password of the registered user. For security reasonsthe window does not show the password entered in areadable form

� Server name SMTP server name of the incoming mail server used� – Modem „WAVECOM Fastrack / GenPro (GPRS)“

and „eDevice eDBox300“: Domain name of theSMTP server

– Modem „Motorola G24“: POP3 server name of therespective outgoing mail server

� Sender name Name of sender� Sender address E-mail address of the sender (DuoSens)� Receiver address E-mail address of the receiver (central evaluation

point)� Load/Save Saves the parameters entered in this window locally on

the PC. With “Load”, with subsequent configuration ofa DuoSens the parameters can simply be called.

Domaine name/POP3 Server name

Fig. 34: Input window “Communicationinterface COM 1“, “Data transmission“

and “SMTP“ tabs.

� Redundant FTPServer

37

Select “HTTP GET” or “HTTP POST” tab and set the required parameters:

HTTP GET: The DuoSens transmits the last saved value of all activated channelsin OTT MIS format.

HTTP POST: The DuoSens transmits the measurement time series of all activatedchannels in OTT MIS format.

� Script URL IP address or URL of the PHP script on the HTTP server(for an example of a server side PHP script, seeAppendix B.)

� Port Giving the port allows directing to a specific TCP/IPcommunication interface. Standard port for HTTP: 80.

� Activate if the HTTP server requests authentication withthe “HTTP POST” protocol.

� User name Enter if required.� Password Enter if required. For security reasons the window does

not show the password entered in a readable form.

Tip: Set aperiodic measured values in the OTT Hydras 3 software with protocoltype HTTP GET. In this way, any gaps in the data arising are not immediately visi-ble, as the DuoSens only transmits the last saved value in each case!

� Basicauthentication


“HTTP” tabs, protocol type “POST”.


“HTTP” tabs, protocol type “GET”.

38

Optional: Select the “Time sync.” tab and set the required parameters:

� Script URL IP address or URL of the PHP script on the HTTP server.If there is an entry already present here, the DuoSenssynchronizes its time with the time of the server (basis= UTC/GMT time) at each transmission interval.

� Port Giving the port allows directing to a specific TCP/IPcommunication interface. Standard port for HTTP: 80

METEOSAT/GOES

Information for configuring a data transmission via the Meteosat/GOES satellitescan be found in the operating instructions of the OTT HDR satellite transmitters oron request.


and “Time sync.” tabs.

39

9.5 Set up LCD display/level monitoring function (only available with DuoSens standard version)

This chapter includes the basic configuration of the LCD display, the level monitor-ing function and of the extended level monitoring function. More information onthis can be found in Chapter 10.

General tab

Available settings� � Observer Manual input

activates the level monitoring function. In this way, you can enter check valuesat the DuoSens via the jog shuttle and the LCD display.

� � Calculate manual input value with scalingscales the measured value shown on the LCD display. The scaling is onlyavailable for channels for which the "Scaling y=ax + b" or "2-point scaling"function block is present in the configuration (see Chapter 9.11). The scalingalso affects future stored values.

� � Suppress display of instantaneous value before inputsuppresses the instantaneous value on the LCD display until a control value isinput (display: ********).

� � Extended observer (store and transmit number)activates the extended level monitoring function. In this way, you can enterobserver notes at the DuoSens via the jog shuttle and the LCD display.

� � Transmit text additionallythe DuoSens stores and transmits the actual observer text as well as the up tofour-digit text number. Independently from this setting, the DuoSens alwaystransmits freely editable observer texts.

� � Password for display (‘Address No./PIN’ from COM1)activates the password protection for the LCD display. The password used canbe set in the "General" tab of the "Communication interface COM1" entry win-dow (see Chapter 9.4).

� Date/time operation – this setting specifies whether the date and time can be set via the jog shuttle

and LCD display (see Chapter 10.4).– Date and time: Date and time can be set– Only time: only the time can be set – Disabled: Date and time cannot be set. (Recommendation with a satellite

transmitting device attached (OTT HDR) or when using the “Time synchroni -sation” GPRS function.)

Fig. 38: Input window "Display/Observer", "General" tab.

40

Observer texts tab

In this table up to 200 freely chosen observer texts for the extended level moni -toring function can be entered. Maximum text length: 60 characters.Each table entry (line) consists of a sequential line number, a text number of up to4 digits (alpha-numeric characters are also possible) and the actual observer text.The "|" character in the table header identifies the line break on the LCD displayafter 20 characters. In standard cases, the DuoSens only saves and transmits thetext number of the observer text. This assumes that the observer texts that belongto the text numbers are available for the data evaluation. If required, the actualobserver text can also be transmitted. This does, however, require more memoryand also takes accordingly longer with remote data transfer using a modem. Configuration see above (� Transmit text additionally).

Buttons� Insert Inserts a new line in the table above the cursor position. (entries

can only be made in lines that are provided with a sequential linenumber.)

� Delete Deletes the line identified with the cursor from the table.� Load Loads an already existing and saved table (.txt file).� Save Saves the table on the PC with any name in .txt format. (As long

as the above-mentioned conventions are adhered to, the tablecan also be edited with any text editor. The text number must beseparated from the observer text with a tab space.)

Note� The 4-digit text number does not have to be entered in an increasing sequence.

The sequential line numbers of the table entries are decisive for sorting.� A table entry with the text number 0000 (without observer text provided)

allows the entry of freely editable text at the DuoSens. In addition, the flexibleentry of a 4-digit number/ID is possible.

� With free text entry, an observer ID (code) can be realized, for example.

Fig. 39: Input window "Display/Observer", "Observer texts" tab.

41

9.6 Channel Function Settings

Creating a new channel

� Number Number of the channel (sensor number, 4 characters,alphanumeric).

� Name Name of the channel (sensor name, max. 40 digits,alphanumeric)

� Unit Measured value dimension (the DuoSens does not processthe unit. However, it will be taken over during the exportof a DuoSens configuration as XML file into the Hydras 3application software.)

� Decimal places Number of decimal places

Caution:Take note of the maximum value range when setting the decimal places. TheDuoSens/the OTT transmission protocol allows a value range of a maximum of±32750. Also take account of the resolution of the sensor for this channel.

Fig. 41: Creating a new channel.

Fig. 40: Channel tab.

42

9.7 Sample interval settings

Sample interval settings

� Sample interval: 5 s … 24 h; time delay at which the DuoSens recordsmeasured values and stores them (store only if sampleinterval = mean interval). The sample interval setting is ata fixed time raster (e.g. sample interval of 10 minutes,time raster …, 00:10, 00:20, 00:30, … .

Smallest sample interval: Sum of all measuring times forsensors attached to the DuoSens.

Sensor measuring times: manufacturer dependent. Seeoperating instructions

9.8 Setting analog sensors

"U/I/Pt100/…" (only with analog expansion)

� Terminal block Connection terminal of the sensor (C … F)� Measuring mode U 0-50 mV

U 0-1.25 V U 0-5 V U 0-10 V I 4-20 mA int. I 4-20 mA ext. I 0-20 mA int. I 0-20 mA ext. Pt 100 pot. 5k

� Sensor lag time [s] Sensor prewarming time; e.g. for ODS 4:8 setting seconds

� Error code if range overflow Record error codes when measuring rangesare exceeded

Fig. 45: Setting analog inputs.

Fig. 44: Sensors tab.

Fig. 43: Sample interval settings.

Fig. 42: Measurement cycle tab.

43

Recording voltage supply

Record voltage supply of the DuoSens (block L, terminals 3 + 4). The DuoSensdetermines the level of the voltage supply internally. There is thus no screw terminal strip necessary.

9.9 Setting digital sensors

"Status input"

.

� Terminal block Connection terminal of the sensor (B 1-2; B 3-4). Twobinary status inputs are present on terminal block B.The DuoSens converts the binary information (0 and 1)into a decimal number. After the reconversion the display is carried out in Hydras 3 in the evaluationwindow of a status sensor.

Caution:

– The status inputs cannot be used as digital parallel input (e.g. for shaft encoders).

– Always position a status input at the beginning (top) of the function tree.

Fig. 48: Setting status input.

Fig. 47: Digital sensors tab.

Fig. 46: Recording voltage supply.

44

"Impulse input"

� Terminal block Sensor connection terminal (B 1-2; B 3-4) � Pulse factor Impulse factor; e.g. for rain gauge 0.1; 0.2 or 0.5; Pluvio

with impulse output: 0,01. An impulse corresponds to 0.1;0.2; 0.5 or 0.01 mm precipitation. Caution: After changingthe impulse factor, a data reset (reset DuoSens) is necessary.

Caution:– Always position an impulse input at the beginning (top) of the function tree.

9.10 Setting serial sensors

"Parsivel PWS"

� Terminal block Sensor connection terminal (A 1-2; RS-485 interface,2-core, 19200 Baud, 8N1)

� Value Measured value of the Parsivel to be recorded in this channel: 03 - Weather code according to wawa Table 468004 - Weather code according to ww Table 4677 08 - MOR visibility in the precipitation (0000) [m]10 - Signal amplitude of the laser strip11 - Number of detected particles12 - Sensor temperature (000) [°C]16 - Current through the heating system (0.0) [A] 17 - Power supply voltage of the sensor (00.0) [V] 18 - Sensor status 25 - Error code 30 - Precipitation intensity (00.000) [mm/h]31 - Precipitation intensity (0000.0) [mm/h]32 - Precipitation amount since start of device (0000.00) [mm] 33 - Radar reflectivity (00.00) [dBz]

Fig. 51: Setting Parsivel PWS.

Fig. 50: Serial sensors tab.

Fig. 49: Setting impulse input.

45

"Kalesto"

� Terminal block Sensor connection terminal (A 1-2;RS-485 interface, 2-core, 9600 Baud,8N1)

� Measuring mode Measurement type "Gauge" or "Flowvelocity"

� Unit Gauge units: [m] or [ft]; Flow velocityunits: [m/s] or [ft/s]

� Distance Kalesto – level reference point= (expected) Kalesto measured value +level gauge value (reference value).Only DuoSens standard version (withLCD display): If using a scaling module("y = ax + b" or "2-point scaling"), anapproximate value is sufficient. The finesetting is then made on the display via"√Ã").

� Angle at which the Kalesto is mounted inrelation to the water surface.

� Virtual terminal ID of signal level Virtual output terminal for the channel inwhich the DuoSens stores the signal level(as required).

� Min. signal level [dB] Minimum signal level of the Kalesto thatis necessary to record a measured valuein the DuoSens.

"SDI-12 master" and "OTT SDI RS-485"

� Terminal block Connection terminal of the sensor SDI-12 master: A 3-4 OTT SDI RS-485: A 1-2

� Slave address SDI-12 bus address. Each slave addressmay only be allocated once to an SDI-12bus line. Check and set: SDI-12 trans -parent mode, see Chapter 18)

Fig. 53: Setting SDI-12and OTT SDI RS-485.

Angle [°](Measuring mode: Flow velocity)

Distance over Level reference point(Measuring mode; Gauge)

Fig. 52: Setting Kalesto.

46

� Value no. Identifies which parameter (the xth of nmeasured values) of an SDI-12 sensor isstored in this channel.

� Measurement mode For the first 9 measured values of anSDI-12 sensor (standard): "M!"; formeasured values 10 to 19: create anadditional channel with "M1!" etc.

� Value no./Virtual terminal ID Allocation of additional parameters ofan SDI-12 sensor to virtual terminals. Note: Which parameter of an SDI-12sensor is linked to which measured valuenumber can be found in the sensorhandbook.

"Serial RS-232" (only with RS-232 extension)

� Terminal block Connection terminal of the sensor (C-D,E-F)

� Sensor number Number of the sensor that is to berecorded

� Preset for Sets the necessary parameters for theNimbus, Hydrosens or OWK16 sensors

� Sensor lag time [s] Sensor prewarming time; e.g. forNimbus: 50 setting seconds

� Instantaneous value Starts an instantaneous value measure-ment and requests a measured value

� Synchronize device time Sets the time of the sensor connected tothe RS-232 interface to the DuoSenstime

� Baudrate Transmission parameter of the RS-232� Parity interface. Further information can be� Databits found in the operation instructions� Stopbits of the individual sensor.

Fig. 54: Setting RS-232 interface.

47

9.11 Setting signal processing

"y=ax+b scaling"

� Linear measurement scaling according to the formula "y = ax + b"� � Value range only positive ➝ Value range: 0 … +65500

(standard value range ±32750)

Notes: � Only DuoSens standard version (with LCD display): To change an instantaneous

value in the DuoSens display (scale), this function block or the "2-point scaling"is required in the relevant channel.

� Entering a = 1 and b = 0 has no initial effect, but later enables scaling to beperformed in the DuoSens display.

ExampleTo refer a water level value to sea level, the measured value must be providedwith an offset (measurement constant). If the level reference point is at 178 mabove mean sea level, for example, the scaling equation is "y = 1· x + 178".

CautionNote maximum value range! The DuoSens/the OTT transfer protocol allows amaximum value range of ±32750 (alternatively 0 … +65500). If it is necessary toscale above this value range, this must be done in the following evaluation soft-ware (for example in the Hydras 3 application software).

"2-point scaling"

� Point 1 Input ("X") and output ("Y") values for point 1� Point 2 Input ("X") and output ("Y") values for point 2� � Value range only positiv ➝ value range: 0 … +65500

(standard value range ±32750)

Notes: � Only DuoSens standard version (with LCD display): To change an instantaneous

value in the DuoSens display (scale), this function block or the "scaling y = ax + b"is required in the relevant channel.

Fig. 57: Setting 2-point scaling.

Fig. 56 Setting linear scaling.

Fig. 55: Signal processing tab.

48

� Entering X = 0; Y = 0 for point 1 and X = 100; Y = 100 for point 2 has no initial effect, but later enables scaling to be performed in the DuoSens display.

� To provide as much processing precision as possible, select the X value forpoint 1 and point 2 to be as far away from one another as possible (within themeasuring range).

ExampleThis function is for converting a level value into a depth value, for example. Example: Point 1: X = 0; Y = 15; Point 2: X = 10; Y = 5 (increasing water levelin an observation well ➝ falling measured value and vice versa).

"Linearization table"

The linearization table offers the possibility of calibrating non-linear characteristiccurves of a sensor. For this you have 20 data pairs for a determined input value"IN" and the calibrated output value "OUT" of a sensor. Intermediate values areinterpolated as linear by the DuoSens. Likewise the values above/below the small-est/largest value pair in the linearizer table; Exception: “� no extrapolation“ ismarked.

� Load Loads a linearizer table from a “.txt” or “.csv” file, e.g. fromthe OTT Prodis software. The entries in this file must each be inone row as “input value;output value”. Possible separators:Space, tab, semi-colon.

� Prodis2 (.xml) Loads a “k*A” table produced by OTT Prodis 2 in XML format(for discharge calculation in conjunction with a speed sensor)

Buttons|� jumps to the beginning of the table� jumps to the previous line � jumps to the next line�| jumps to the end of the table+ inserts a line– deletes a line

Fig. 58: Setting linearization table.

49

"Mean"

� Mean interval 5 s … 24 h; time delay during which the DuoSenscalculates an arithmetic mean from the sampleinterval values and stores it. The mean intervalmust be equal to or larger than the sample inter-val. The sampling interval must be a whole numberwithin the mean interval (e.g. sample interval:10 minutes; mean interval: 1 hour ➝ the DuoSensstores an arithmetic mean from 6 sample intervalvalues each hour).

� Minimum number of valid values for mean calcu -lation (valid values = no error messages stored, seeChapter 19).

� Time delay in hours:minutes:seconds indicating theamount of delay between the mean interval andthe time raster (maximum of half the interval widthof the mean interval). This enables an optimal display of the curve of the mean values.

� � The stored time of day of the mean is at thecenter of the mean interval; otherwise it is at theend of the mean interval.

Note

� The mean interval must be a whole multiple of the sample interval.

"Total"

� Interval 5 s … 24 h; time period over which the DuoSenscalculates a sum of the sample interval values andstores it. The interval must be equal to or largerthan the sample interval. The sampling intervalmust be a whole number within the interval (e.g.sample interval: 1 hour; interval: 24 hours ➝ theDuoSens stores a sum value from 24 sample interval values each day).

� Minimum number of valid values for sum calcu -lation (valid values = no error messages stored, seeChapter 19).

Number min. 'good'values

Fig. 60: Setting totals formation.

Offset time(Mean interval)


Fig. 59: Setting mean calculation.

Time of storage valueis center of interval

50

� Offset time (Interval) Time shift in hours:minutes:seconds indicating byhow much the interval over which the sum is calcu-lated is shifted compared to the time raster (maxi-mum of half the interval width of the interval). Thisenables an optimized display of the curve of thesum values.

� � The stored time of day of the sum is at the cen-ter of the interval over which the sum is calculated;otherwise it is at the end of the interval.

� � The saved date of the sum originates from theend of the interval during which the sum calcula-tion was carried out, otherwise the day with thehighest number of values determines the date.Example: Precipitation sum from 07:30 until 07:30the next day; � ➝ date of start day, � ➝ date offollowing day

� � Instead of the sum of the previous intervals, outputs the sum value for the current measurementcycle.

„Arithmetic“

� Virtual Sensor 1 … 4 The DuoSens calculates a new output value fromtwo of the four input values (virtual sensor n)according to a formula that can be chosen (mode).The input values must be defined using virtual ter-minals in the appropriate channels.

� Mode 1+2+3+4/n ➝ arithmetic mean1+2+3+4 ➝ sum1-2-3-4 ➝ difference1*2*3*4 ➝ product1/2/3/4 ➝ quotient

Date of the stored valueis end of the interval

Fig. 61: Setting arithmetic.

Actual total of intervalsis output value

Time of storage valueis center of interval

51

"Storage delta"

� Do NOT store zero values � The DuoSens only stores measured values thatare not equal to 0.

� Storage delta value The DuoSens only saves a measured value if thismeasured value differs from the previously savedmeasured value by the storage delta value. (storagedelta value = 0 ➝ the DuoSens saves all measuredvalues.)

Note

� The "storage delta" function produces aperiodic time sequences ➝ in the"Store" function block, select "Always store with time".

� If the storage delta value is not equal to 0 and if a measured value is ready tobe stored in the DuoSens, the DuoSens also stores the previous measured valueafterward (which, however, did not exceed the storage delta value). Thisprocess optimizes the display for graphical evaluation of measured values.

Example sample interval: 1 hour mean interval: 1 hour storage delta value: 0.05 m stored values: 11:00:00 AM; 1.20 m

07:00:00 PM; 1.21 m 08:00:00 PM; 1.28 m

"Limit"

see Chapter 13 "Alarm management"

"Filter"

The function block filter allows the calculation of a "Sliding Mean", a "SlidingTotal" and a "Sliding Median".

� Mode Calculation algorithm of the filter: – Sliding Mean (arithmetical) – Sliding Total– Sliding Median

� Period/width (meas. cycles) Number of sample intervals over which the filtercalculates a sliding mean, sliding total or slidingmedian. Value Range: 2 … 1440

Fig. 63: Filter.

Fig. 62: Setting storage delta.

52

� Minimum number of valid values for filter calcu -lation (valid values = no error messages stored,see Chapter 19).

� If a virtual terminal is selected, DuoSens outputsthe filter value calculated for further use in anadditional channel (virtual sensor). If no virtualterminal is selected, the DuoSens stores the filtervalue in this channel.

"Extremes"

Determines within the time interval setting the minimum/maximum measured valueoccurrence or the daily minimum/maximum.

� Mode "Maximum", "Minimum" or "Min/Max OTT Protocol"� Interval Time period in which the DuoSens determines a respective

extreme. In "Min/Max OTT Protocol", the DuoSens automati-cally determines a daily minimum/maximum over 24 hours.

� � Stores the time of the interval end instead of the time ofthe minimum/maximum measured value.

Parallel sensor (activate with Virtual Sensor)� Virtual Sensor activates a parallel, virtual sensor for processing the extreme

values� Virtual Terminal Virtual terminal for this virtual sensor

"Status alarm"

see Chapter 13 "Alarm management"

9.12 Setting measured value output

Fig. 65: Measurement output tab.

Store withinterval time

Fig. 64: Setting extremes.

Filtered value output onlyto Virtual Terminal ID


53

"Store"

FunctionStores the measured values taken in this channel to a non-volatile memory. Thisfunction is absolutely necessary at the end of every channel. For periodic measure -ments, the DuoSens only stores the actual measured value and not the time.

Settings� � Always store with time

also stores periodic measured values with the time and transmits these in theOTT protocol.

"Instantaneous value"

Activates the determination and display of an instantaneous value for this channelon the LCD display (level monitoring function; DuoSens standard version) and in the"instantaneous value" function of the operating program (DuoSens basic version).

Settings� � Scaling (only for display)

Measurement scaling according to the function "y = ax + b". This function onlyaffects the instantaneous value shown on the LCD display/in the instantaneousvalues window. Stored values are not affected. Factory settings: □; a = 1; b = 0.

� Unit dimensional units for the (scaled) instantaneous value shown on the LCD display/in the instantaneous values window.

ExampleTo refer a water level value to sea level, the measured value must be providedwith an offset (measurement constant). If the level reference point is at 178 mabove mean sea level, for example, the scaling equation is "y = 1· x + 178".

CautionNote maximum value range! The DuoSens/the OTT transmission protocol alowsa maximum value range of ±32750 (or 0 … +65500 with a preceding scalingmodule “Scaling y=ax+b“ or “2-point scaling“).

NoteIf in the configuration of a channel there is an additional "2-point scaling" priorto scaling the instantaneous value, or a "y=ax+b scaling", the effects are additive.

Fig. 67: Activating instantaneousvalue display.

Fig. 66: Store.

54

"Switching output"

With two switching outputs, the voltage supplies of, for example, a sensor orexternal device can be switched.

� M 1-2 (potential free switching output) orM 3-4 (switched voltage supply)

� Lag time [s] Waiting time after a switching operationbefore the DuoSens continues with process-ing the following function block. Valuerange 0 … 99 seconds. This allows, forexample, an “intelligent” sensor with itsown firmware to receive a defined time tostart after switching on before the DuoSensstarts the subsequent measuring process.

Caution: The function block “Communication interface COM1” also accesses theM 1-2 and M 3-4 terminal blocks.

9.13 Special Function Settings

The DuoSens allows creation of so-called virtual channels. In these virtual chan-nels, the DuoSens does not process and store any direct input signals, but mea-sured values that are transferred from another channel.

For example, measured values are not scaled in an original channel, but in anoth-er, virtual channel these measured values are scaled according to y = ax + b oraccording to a 2-point scale.

A virtual terminal must always be defined in the tree diagram prior to the virtualsensor associated with it.

"Virtual Terminal"

� Terminal ID Defines the virtual terminal. Value Range: V01 … V64

Fig. 70: Virtual Terminal.

Fig. 69: Measurement output tab.

Fig. 68: Switching output.

Activation control via switchingoutput at terminal block

55

"Virtual Sensor"

� Virtual Terminal Virtual input signal for this channel. Value Range:V01 … V64 The virtual sensor used must already havebeen defined in another channel as a virtual terminal.

"Manual Sensor (Manual Value)"

The manual sensor makes it possible to enter so-called "manual values" (for example, by an observer reading the value from a level slat) into the databaseof the DuoSens (see Chapter 10.5). Exceptionally, this channel only includes thefunction blocks "Manual Sensor" and "Store" (the function blocks "Meas. cycle"and "Instantaneous value" are not needed.)

Fig. 71: Virtual Sensor.

Fig. 72: Manual sensor.

56

10 Operating and setting DuoSens on location(only available with DuoSens standard version)

To operate on location, the DuoSens standard version is equipped with an LCD display (4 lines of 20 characters) and a "jog shuttle". The jog shuttle is a specialoperating button that can be turned and pressed.

The following functions can be called with the jog shuttle:

� Detects and displays instantaneous values (level monitoring function)– with the input of a control value – without the input of a control value

� Enter observer texts (extended level monitoring function)� Scale instantaneous values/stored values (set offset)� Display/set date and time� Start voice announcer (optional)

Meaning of the function symbols on the LCD display! "Enter observer text"¥ "continue"√ "enter"≈ "cancel"/"exit"/"back"

10.1 Detecting and displaying instantaneous values (levelmoni toring function)

Requirements� The configuration of a channel that is to determine and display an instantaneous

value must include the "instantaneous value" function block (see Chapter 9.12).� If additional check values are entered, the option "Observer Manual input" in

function block "Display/observer" must be activated (see Chapter 9.4).

How to determine and display instantaneous values without entering a check value:

� Press jog shuttle twice. (between the first and second presses, the LCD displayshows the DuoSens firmware version.) The DuoSens activates the LCD displayand shows the selection menu (if password protection for the LCD display isactive ➝ enter the four-position password first; see Chapter 9.4):

� Press jog shuttle (Observer). The LCD display shows the station name, thestation number, the current time and, after 2 seconds, the level of the voltagesupply:

Fig. 74.DuoSens Iller Ulm

0000004478

14:10:06 12.4 V

¥ ≈

Fig. 73.

Observer

Date/ Time

End

57

� Press jog shuttle (¥). The LCD display shows the screw terminal strip used, thesensor name/number and the instantaneous value of the first channel (sensor):

� To show the instantaneous values of additional channels, press jog shuttle onceeach time (¥). After the instantaneous value of the last channel has beenshown, the LCD display shows the instantaneous value of the first channelagain.

� To end the display of the instantaneous values, rotate jog shuttle to Å and press(twice). If the jog shuttle is not used for three minutes, the LCD display shuts offautomatically.

How to determine and display instantaneous values whenentering a check value:

� Press jog shuttle twice. (between the first and second presses, the LCD displayshows the DuoSens firmware version.) The DuoSens activates the LCD displayand shows the selection menu (if password protection for the LCD display isactive ➝ enter the four-position password first; see Chapter 9.5):

� Press jog shuttle (observer). The LCD display shows the station name, thestation number, the current time and, after 2 seconds, the level of the voltagesupply:


0000004478

14:10:06 12.4 V

¥ ≈

Fig. 77.

Observer

Date/ Time

End

Fig. 76.A1/2: Level Kalesto

0010 : 10.41 m

¥ √ ≈

Fig. 75.C: Air temp. Pt 100

0130 : 24.6 ØC

¥ √ ≈

58

� Press jog shuttle (¥). The LCD display shows the screw terminal strip used andthe sensor name/number of the first channel (sensor): If the "Suppress displayof instantaneous value before input" option in function block "Dis-play/observer" is activated, the DuoSens suppresses the instantaneous valuewith stars:

� Rotate jog shuttle to √.

� Press jog shuttle (√). The check value is now entered by character from right toleft. The character to be changed in each case is shown inverted (white onblack background):

� Rotate jog shuttle until required character appears.� Press jog shuttle to jump to the next character position, etc.

� Confirm the entry: Press jog shuttle (√). Cancel: Rotate jog shuttle to ≈ andpress.


0130 : 0025.7 ØC

√ ≈


0130 : 0000.0 ØC


0130 :******.* ØC

¥ √ ≈


0130 :******.* ØC

¥ √ ≈

59

� Press jog shuttle (¥). The DuoSens now determines the current instantaneousvalue of the first channel (sensor) and shows it on the LCD display:

� To enter the check value and show the instantaneous values of additionalchannels, press jog shuttle once each time (¥). After the instantaneous valueof the last channel has been shown, the LCD display shows the instantaneousvalue of the first channel again (it is not necessary to enter a check valueagain).

� To end the display of the instantaneous values, rotate jog shuttle to ≈ andpress (twice). If the jog shuttle is not used for three minutes, the LCD displayshuts off automatically.

Note

� The "Detect and display instantaneous values" function initiates an instanta-neous value measurement. Until this measurement is complete, the displayrefers to the last stored value (or the instantaneous value last displayed,whichever is the most recent). On the display, this is identified with an "s" afterthe channel number (sensor number). After completing the measurement, thenew measured value appears without additional identification.

� The DuoSens stores each call of the "Detect and display instantaneous values"function (observer) in the info channel with date and time. After "Read In" and"Accept" this information can be displayed in the evaluation window of asensor in the Hydras 3 application software using the "Info Data | Station |Displays" function (observer entry general).

� If the "Observer manual input" option in the "Display/observer" function blockis activated, the DuoSens also stores the check value entered and the currentlymeasured instantaneous value in addition. These two values can be displayedin the evaluation window of a sensor after being "Read In" and "Accept" to theHydras 3 application software using the "Info Data | Sensor | Displays" func -tion (observer entry with control value input).


0010 :*****.** m

¥ √ ≈


0130 : 24.6 ØC

¥ √ ≈

60

10.2 Enter observer texts (extended level monitoring function)

Requirements� The "Extended observer (store and transmit number)" option in function block

"Display/observer" is activated (see Chapter 9.5).� In function block "Display/observer", observer texts are stored (see Chap-

ter 9.5).

How to enter observer texts for the station:

� Press jog shuttle twice. (between the first and second presses, the LCD displaybriefly shows the DuoSens firmware version.) The DuoSens activates the LCD display and shows the selection menu:

� Press jog shuttle (Observer). The LCD display shows the station name, thestation number, the current time and, after 2 seconds, the level of the voltagesupply:

� Rotate jog shuttle to !.

� Press jog shuttle in order to begin the entry of the observer texts.

Fig. 88.Start maintenance

1


0000004478

14:12:16 12.4 V

! ¥ ≈


0000004478

14:12:15 12.4 V

! ¥ ≈

Fig. 85.

Observer

Date/ Time

End

61

� Rotate jog shuttle until the required number/text appears and then press. (thenumbers are not necessarily sorted in increasing sequence. The line numbers ofthe table entries of the observer texts are decisive; see Chapter 9.5). By select-ing the number 0000, freely editable texts can be entered.

� Confirm the entry: Press jog shuttle (√). Cancel: Rotate jog shuttle toÅ≈ andpress.

� To end the entry of the observer text, rotate jog shuttle to ≈ and press. If thejog shuttle is not used for three minutes, the LCD display shuts off automatically.

How to enter observer texts for a channel (sensor):

� Press jog shuttle twice. (between the first and second presses, the LCD displaybriefly shows the DuoSens firmware version.) The DuoSens activates the LCDdisplay and shows the selection menu (if password protection for the LCDdisplay is active ➝ enter the four-position password first; see Chapter 9.5):

� Press jog shuttle (observer). The LCD display shows the station name, thestation number, the time and, after 2 seconds, the level of the voltage supply:

� Rotate jog shuttle to !.


0130 : 24.6 ØC

! ¥ √ ≈


0000004478

14:12:15 12.4 V

! ¥ ≈

Fig. 90.

Observer

Date/ Time

End

Fig. 89.ok, no problems

50 √ ≈

62

� Press jog shuttle (¥). The LCD display shows the instantaneous value of thefirst channel (sensor):

Note� The application software Hydras 3, version 2.00.0, only displays the observer

texts in numerical form within the Rawdata management.

How to enter freely editable text:

� Select number 0000 (see above).� Press jog shuttle (√) to begin with text entry:

� Rotate jog shuttle until required alphanumeric character appears.� Press jog shuttle to jump to the next character position, etc.

� Confirm the entry: Press jog shuttle (√).

Fig. 96.StillinÌ well is

plugged with silt

0000 √ ≈

Fig. 95.

0000 √ ≈

Fig. 94.

0000 √ ≈

Fig. 93. Start maintenance

1

63

10.3 Scale instantaneous values/stored values (set offset)

How to change (scale) an instantaneous value:

� To change a value: Rotate the jog shuttle clockwise until "√" is selected (textwith black background).

� Press jog shuttle (√). The value is now entered by character from right to left.The character to be changed in each case is shown inverted (white on blackbackground):


Please note: Changing an instantaneous value in the display is only availablefor channels for which the "Scaling y=ax + b" or "2-point scaling" functionblock has been created during the configuration (see Chapter 9.11). Changingan instantaneous value will affect the scale of this channel (offset). The DuoSensrecords instantaneous value changes in the "Info channel" of a sensor (evaluationwith Hydras 3).


� To change an additional instantaneous value: Rotate jog shuttle (¥) and press.


0010 : 10.50 m

√ ≈


0010 : 10.41 m

64

10.4 Display/set date and time

Set the date and time as follows:

� Press jog shuttle twice. (between the first and second presses, the LCD displaybriefly shows the DuoSens firmware version.) The DuoSens activates the LCD display and shows the selection menu (if password protection for the LCD displayis active ➝ enter the four-position password first; see Chapter 9.5):

� Rotate jog shuttle (Date/ Time).

� Press jog shuttle. The DuoSens shows the current time and date:

Set the date and time as follows:

� Press jog shuttle (√).

� Change number (↕): Rotate jog shuttle.� Jump one number to the right (➝): Press jog shuttle. After moving to the sec-

onds, the DuoSens shows "√" and "≈":

� Set date/time (store): Press jog shuttle (√).

Alternatively, the date and time can be set via the "DuoSens operating program":"DuoSens | Date / Time" menu.

Fig. 103.

20.10.06 15:00:00

√ ≈

Fig. 102.

14.10.06 14:10:27

Fig. 101.

14.10.06 14:10:26

√ ≈

Fig. 100.

Observer

Date/ Time

Ende

Fig. 99.

Observer

Date/ Time

End

65

10.5 Enter manual values into a manual sensor

Requirements� The configuration of a channel that is to allow the entry of manual values must

include the "manual sensor" function block (see Chapter 9.13).

How to enter manual values

� Press jog shuttle twice. (between the first and second presses, the LCD displaybriefly shows the DuoSens firmware version.) The DuoSens activates the LCDdisplay and shows the selection menu (if password protection for the LCDdisplay is active ➝ enter the four-position password first; see Chapter 9.5):

� Press jog shuttle (observer). The LCD display shows the station name, thestation number, the current time and, after 2 seconds, the level of the voltagesupply:

� Rotate jog shuttle to ! and press.

� The LCD display shows a selection menu. This menu is only visible if the levelmonitor function is activated (function block "Display/observer", Tab "General","� Observer manual input").

Fig. 107.

Observer

Manual sensor

≈

Fig. 106.LoÌoSens Iller Ulm

0000004478

14:13:16 12.4 V

! ¥ ≈

Fig. 105.LoÌoSens Iller Ulm

0000004478

14:12:15 12.4 V

! ¥ ≈

Fig. 104.

Observer

Date/ Time

End

66

� Rotate jog shuttle to Manual sensor and press.

� The LCD display shows the first sensor for manual input. For manual input ofadditonal channels, press the jog shuttle (¥) or rotate to Ã√.

� To start manual input, press jog shuttle (√).

� The manual value is now entered by character from right to left. The characterto be changed in each case is shown inverted (white on black background):


� After entering the manual value, the time applicable to it is entered from rightto left. The character to be changed in each case is shown inverted (white onblack background): The DuoSens shows the current time as the default.


Fig. 112.Manual Humidity

9000 : 0075.0 %

14:13:50


9000 : 00000.0 %


9000 : _____._ %

¥ √ ≈


9000 : _____._ %

¥ √ ≈

Fig. 108.

Observer

Manual sensor

≈

67


� To show the manual input of additional channels, press jog shuttle once eachtime (¥). After the manual input of the last channel has been shown, the LCDdisplay shows the manual value entry made for the first channel again.

� To end the display of the manual input, rotate jog shuttle to ≈ and press(twice). If the jog shuttle is not used for three minutes, the LCD display shuts offautomatically.

Note� The DuoSens saves a manual sensor in the same way as a normal, aperiodic

sensor, with measured value, date and time.


9000 : 0075.0 %

¥ √ ≈


9000 : 0075.0 %

√ ≈

68

11 Reading out measured data.

To read out measured data from a DuoSens, you will need a PC with the "Hydras3 Application Software (Basic)" 1).

There are three possibilities available:� Directly via an RS-232 – RS-232 Cconnection� Directly via an optical interface (IrDA)� By remote data transfer with a modem

11.1 Reading out measured data via an RS-232 connection

� Connect the RS-232 C interface of the DuoSens with a serial interface on thePC (see also Chapter 8).

� Start Hydras 3 (Basic).� In the tree view of HYDRAS 3, select the station; select "Communication | Read

/ Operate" menu.� In "Communication" window, read in "DuoSens" type data: select "standard".

The protocol type is preset to "OTT protocol (Hydrosens)". Select the communi-cation path "RS-232 C/V.24, COM1 (or COM2), 19200Bd, 8N1". Press"Start".

� The measured values are copied from the DuoSens into the PC and are presentin the raw data pool.

11.2 Reading out measured data via an optical interface

� Connect the OTT DuoLink with a serial interface on the PC(alternatively OTT IrDA-Link USB on USB interface).

� Place OTT DuoLink on the optical interface (IrDA) of the DuoSens.� Start Hydras 3 (Basic).� In the tree view of HYDRAS 3, select the station; select "Communication | Read


The protocol type is preset to "OTT protocol (Hydrosens)". Select the communi-cation path "IrDA OTT DuoLink, COM1 (or COM2), 19200Bd, 8N1". Press"Start". ➝ The measured values are copied from the DuoSens into the PC andare present in the raw data pool.

Fig. 115: Reading out measured data.

69

11.3 Reading out with remote data transfer via modem

The DuoSens must be connected and set up for this with a serial (grid bound)modem, GSM modem (mobile telephone modem) or ISDN adapter.

� Start Hydras 3 (Basic).� In the tree view of HYDRAS 3, select the station; select "Communication | Read


The protocol type is preset to "OTT protocol (Hydrosens)". Select as the commu-nication path the modem used on the PC (or Hayes compatible).

� The measured values are copied from the DuoSens into the PC and are presentin the raw data pool.

70

12 Installing a new DuoSens operating system

You have the possibility of updating the DuoSens operating system (Firmware) withthe "DuoSens operating program". By continuously developing the operating system,even with the same hardware you can have extended functionality for DuoSens.

Stay informed from time to time on the OTT Internet Homepage "www.ott.com" asto the current software version of the DuoSens operating system. Load a new version of the operating system if necessary (file: "SLM01M.bin") via "Download"onto your PC.

Install the new software as follows:

� Copy the file SLM01M.bin to the directory in which the DuoSens operating program is located.

� Start the DuoSens operating program.� Select menu "DuoSens" and function "New program code".� Confirm security query ➝ the operating program copies the new DuoSens

operating system to the DuoSens

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13 Alarm management

The DuoSens is in the position to automatically generate an alarm if certain situa-tions (limits) arise. An alarm can trigger three different actions:

� Transfer of the alarm via modem (analog telephone network/GSM cell phonenetwork) connected to the DuoSens, a terminal adapter (digital, ISDN tele-phone network) connected to the DuoSens or via a satellite transmitter.

� To shorten the time interval in which the DuoSens transmits data independently.For this there are five additional time intervals controlled by limits.

� Control of external devices via a potential free switching contact (electronicrelay) and/or a voltage supply switching contact (switched UBat).

In the DuoSens operating program there are three function blocks present for configuring the alarm management:

� Alarm management function blockthis function block can be found in the upper section of the tree view concern-ing the whole DuoSens. In the entry window of this function block there aregeneral parameters to be entered such as addresses, telephone numbers, communication paths and communication and protocol types.

� Limit function blockLimits are entered in the entry window of this channel function block that trigger a limit alarm (for all inputs except status input).

� Status alarm function blockLimits are entered in the entry window of this channel function block that trigger a status alarm (only for status input).

13.1 Input window function block alarm management

The DuoSens differentiates between individual addresses and address groups. (anaddress group consists of at least one address.)

Fig. 116: Tree view of the DuoSens functionblocks in the left part of the operating

program main window.

The three function blocks AlarmManagement, Limit and Status Alarm

are responsible for alarm management.

The information in brackets after limit andstatus alarm are the addresses/addressgroups to which the DuoSens sends an

alarm. With the Limit function block, the setlimit value is entered in addition.

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Create a new address as follows� Click on the Read button.� In the tree diagram, select Alarm management function block.� In the Alarm management entry view, select the Addresses tab.� Click on the New button.� In the Alarm address name window, enter the name for the new address and

click on OK.� Enter required parameters (dependent on the set communication path):

� Name Any alphanumeric name for an address.� Telephone number, fax number, e-mail address to which the

DuoSens should send the alarm.

� ➝ Switching output: in the case of an alarm, the DuoSensswitches one of the two switching contacts for a definedtime. Switching output at terminal block: M 1-2 (elec-tronic relay) or M 3-4 (switched UBat).Switching time [s]: Time the switching contact is switchedfor 1 … 99 seconds. 0: the switching contact remainsswitched until the triggering alarm condition(limit/status) is no longer present.

➝ Modem/adapter COM1: the DuoSens sends an alarmmessage in the case of an alarm via themodem/terminal adapter

➝ METEOSAT/GOES: the DuoSens sends an alarm mes-sage in the case of an alarm via the satellite transmitter(see operating instructions OTT HDR satellite transmitter)

➝ Data transmission COM1: in the case of an alarm, theDuoSens changes the transmission interval (Cycle limit)of the data transmission by telephone dial-up connectionor can be set to send an alarm message

➝ Data transmission GPRS COM1 Limit: in the case of analarm, the DuoSens changes the transmission interval(Cycle limit) of the GPRS data transmission

– Modem passive: The application software Hydras 3*receives and records the incoming alarms ➝ protocoltype: OTT protocol standard. A suitable alarm job mustbe configured and activated in Hydras 3 for this purpose.

– Modem active: Any terminal program * (e.g. ZOC Termi-nal) receives and records the incoming alarms ➝ protocoltype: Text.

* on a PC with, for example, grid bound modem

Fig. 117: Input window "AlarmManagement", "Addresses" tab.

Communicationpath/Switchingoutput

� Communicationtype

Address(phone no.,e-mail, etc.)

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– SMS: In the case of an alarm, the DuoSens sends anSMS text message to a mobile telephone, for example. Inthe address entry field, the telephone number of an SMS-capable remote station must be entered. (with variousmobile network operators it is possible to also send SMStext messages to conventional fixed line connections –SMS-To-Speech.)

– FAX (via SMS): In the case of an alarm, the DuoSenssends an SMS text message to the Service Center of themobile network operator. The mobile network operatorconverts this SMS text message into a fax. In the addressentry field, the telephone number of a fax connectionmust be entered. In addition, in the entry view of the"Communication interface COM1", the fax prefix numberof the GSM Service Center must be entered in the"Modem/adapter" tab (e.g. in Germany, 99 for T-Mobileand Vodafone)

– E-mail (via SMS): In the case of an alarm, the DuoSenssends an SMS text message to the Service Center of themobile network operator. The mobile network operatorconverts this SMS text message into an e-mail. In theaddress entry field, an e-mail address must be entered(+ separator specified by mobile network operator). Inaddition, in the entry view of the "Communications inter-face COM1", the e-mail calling number of the GSM Service Center must be entered in the "Modem/adapter"tab (e.g. in Germany, 8000 for T-Mobile and 3400 forVodafone)

� Protocol type – Text: Alarm forwarding to a terminal program➝ communication type: Modem active

– OTT protocol standard: Alarm forwarding to Hydras 3➝ communication type: Modem passive

� Number of dialing attempts and time between attempts inminutes.

� With communication type modem active/passive: thisalways ➝ the DuoSens always sends an alarm message tothis address; only alternatively ➝ the DuoSens only sendsan alarm message to this address if the alarm message tothe previous address was unsuccessful.

� In the case of an alarm, the DuoSens alternatively uses –instead of the transmission interval defined under CycleStandard – this time interval for data transmission

� Transmission interval ➝ changes the transmission intervalfor the alarm message in the case of an alarmAlarm message ➝ transmits an alarm message in the caseof an alarm

� If required, additional addresses can be created by clicking on the New button.� Continue with creating address groups (see below).

Note

� Delete address: Select address (blue background) and press PC button Del(delete).

� Fax and e-mail transmission via SMS text message must be switched on and setup by the mobile network provider.

� Further information on technical requirements, switching on and costs of faxand e-mail transmission via SMS text messages can be obtained from yourmobile network operator (e.g. T-Mobile, Vodafone, etc.).

Alarmactivates/sends

Cycle Limit(transmissioninterval)

If previousalarm notsuccessful

No. of dialings/Pause [min]

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Create a new address group as follows:� In the tree diagram, select Alarm management function block.� In the Alarm management entry view, select the Address groups tab.� Click on the New button.� In the Address group name window, enter the name for the new address group

and click on OK.� Usingdrag & drop, drag at least one address from the list Addresses (available)

to the Address group members list.� If required, additional addresses can be created by clicking on the New button.� Continue with the definition of limits and/or status alarm (see below).

Note� The name of an address group cannot be subsequently changed.� Deleting an address group or address group member: Select address

group/address group member (blue background) and press PC button Del(delete).

13.2 Input window function block limit and status alarm

Within a channel there must be a limit definition at which an alarm is generated.It is possible for each channel to have multiple limit definitions.

Define a limit as follows:� Select the Processing tab in the functions list.� Using drag & drop, drag function block Limit into the relevant channel.

Recommended position in the tree view: directly before the function block Store.

Fig. 119: Input window forlimit function block.

Fig.115: Input window “Alarm Manage-ment”, “Address groups” tab.

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� Set/enter limit definition at which the DuoSens generates an alarm:� Mode Standard (not changeable)� Value >= (greater than or equal to) or <= (lesser than or equal

to) limit; for status alarm: 1 or 0. Example: Alarm genera-tion for a value greater than or equal to 1.60.

� Hysteresis Value by which the measured value mustdecrease/increase before the DuoSens generates a newalarm. Example: Renewed alarm generation only when thevalue has dropped to at least 1.55 and then againincreased to 1.60.Number of measurement cycles in which the limit has to bereached before an alarm is generated. Example: The firsttime the value 1.60 occurs, the DuoSens generates analarm.� Alarm generation also for error state (measured value).

� Alarm generation also with subsequent undershoot-ing/exceeding of the limit threshold. Example:If the value sinks again under 1.60, the DuoSens alsogenerates an alarm.

� Address or address group to which the DuoSens sends thealarm. (Address/address groups saved in function blockAlarm Management.)

� Text SMS Only for status alarm: content of the SMS sent by theDuoSens in the case of an alarm (max. 160 characters)

� Gradient limit (additional)

� Value: Additional condition independent from the static limit atwhich the DuoSens also generates an alarm. Increasing: ➚;Decreasing: ➘; Increasing and decreasing: ➚➘. Example:If the value rises by 0.5 between two measurement cycles,the DuoSens generates an alarm.

Number of measuring cycles for which the DuoSens doesnot generate a further alarm when a new gradient limitarises.

� Operating area

Defines an operating range within which the DuoSensmonitors the gradient limit.

� Click the Program button➝ warning: Configuration changed. Reset DuoSensand delete data memory? Confirm with yes. Caution: All measured values collected until now will be permanently lost! Ifnecessary, read out measurements before.

Note

� All values in the limit entry window relate to the unit definition in the measure-ment module (function block pressure sensor, temperature, etc.).

� If multiple limits are needed, the limit function block is inserted multiple times(together) into the channel.

� Upper limit� Lower limit

Send alarm toaddress (group)

Fig. 117: Input window of thefunction block status alarm.

� Dead time(meas. cycles)

� Alarm alsoat limit end

� Alarm ifvalue error

� Toleranceperiod(meas. cycles)

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14 Protect DuoSens using a password

To protect a DuoSens from unauthorized configuration or entry of operating parameters, you can lock the DuoSens using a password.This only concerns the communication with the DuoSens operating program.

Protect the DuoSens from unauthorized operation as follows:� In the tree view, select "Communication Interface/COM1".� Select "General" tab.� Enter a maximum eight-digit password in the "Password" input field. Permis -

sible characters 0 … 9, A … Z.� Press the "Program" button.� Warning "Configuration changed! Reset DuoSens and delete data memory?"

Confirm with "No".➝ The DuoSens is now protected from unauthorizedoperation.

Caution: Keep the password in a safe place. If the password is lost, you canno longer configure or parametrize the DuoSens. If this occurs, contact OTTHydroService.

Release the DuoSens for operation as follows� Select menu "DuoSens | Enter password".� Input password.� Press the "OK" button.� Confirm information "Password accepted! DuoSens operation is accessible"

with "OK".� Press the "Read" button.➝ The operating program reads in the current

DuoSens configuration.

Fig. 122: Input window forthe input of the password.

Fig. 121: Input window forthe definition of the password.

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15 Date and Time Settings

The internal clock of the DuoSens is a realtime clock with high accuracy. If thesupply voltage is interrupted, the installed lithium battery provides the voltage supply for the realtime clock. The date and time are set through the DuoSens operating program.

Set the date and time as follows

� Set up the PC/DuoSens communication link (see Chapter 8).� Select menu DuoSens function Date/time ➝ the operating program opens the

window DuoSens – Date/time and reads out the date and time of the DuoSens.� Press Set time button ➝ the operating program sets the DuoSens date/time

according to the PC time/date or the date/time set in the two selection fields.� If necessary: Press the Update button➝ the operating program reads out the

DuoSens date and time again.� Press Exit button.

Caution: If the PC is on summer time mode (ID: PC (DST)), the operating program automatically uses the standard time without summer correction (wintertime). To maintain continuous time sequences, it makes sense not to use summertime in the DuoSens. (the DuoSens does not have an automatic summer timeadjustment)

16 Deleting Data Memory

Caution: The stored measured values in the DuoSens are permanently lost whendeleting the data memory! Where necessary, read out the measured values beforedeleting (see Chapter 11).

Delete the data memory as follows

� Set up the PC/DuoSens communication link (see Chapter 8).� Select theDuoSens menu function Delete Data Memory.� Acknowledge the warning Are you sure you want to delete data memory? with

yes ➝ the operating program deletes the complete data memory of theDuoSens (all measurements including the information channel). The deletion ofthe data memory takes about 30 seconds.

Afterwards, the DuoSens determines and stores the measured values of all channels available at the sample interval set in each case.

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17 Print terminal assignment plan

For documentation purposes, the DuoSens/LogoSens operating program offers thepossibility of printing a terminal assignment plan. The configuration of the DuoSenssaved in the tree view is used as the basis for this terminal assignment plan.

Print a terminal assignment plan as follows:

� Connect the serial interface of the PC to the serial interface of the DuoSens viadata transmission line (see Chapter 8).

� Read the current DuoSens configuration into the operating program: Menu"DuoSens | Read" or "Read" button.

� Select menu "File | Print Connection diagram" ➝ the print preview windowopens.

� Click on the printer symbol ➝ the operating program prints the connectiondiagram.

Buttons in the print preview window:

Optimum size; show whole page of connection diagram

Show connection diagram at scale 100 %

Scale connection diagram to screen width

Go to first page of the connection diagram

Go to previous page of the connection diagram

Go to next page of the connection diagram

Go to last page of the connection diagram

Printer setup (standard Windows dialog)

Print connection diagram

Save connection diagram as "QuickReport" file (*.QRP)

Open saved connection diagram ("QuickReport" file)

Close print preview window

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18 SDI-12 transparent mode

For maintenance or calibration work on a sensor with SDI-12 interface, theDuoSens has a so-called "Transparent mode". Using a kind of terminal emulationin the DuoSens/LogoSens operating program, it is possible to directly communi-cate with the sensor via the DuoSens. For this there are the so-called "extendedcommands" available in the SDI-12 specification. In this case, the DuoSens trans-fers the commands to the sensor, activates it, and returns the responses of the sen-sor to the terminal window.

Further information on the "extended commands" of an SDI-12 sensor can befound in the operating instructions of the sensor.

Please note:� Note case sensitivity.� Incorrect entries are acknowledged by the sensor with < Error > .� If communication is erroneous, end terminal mode (ESC button), wit 5 seconds,

then restart terminal mode.� If the DuoSens is in measuring mode (e.g. sample interval of a sensor is

active), the reply from the sensor is delayed.

Start the SDI-12 transparent mode as follows� Connect the RS-232 interface of the DuoSens with a serial interface of a PC

(e.g. COM 1) .� Start the DuoSens/LogoSens operating program.� Set communication parameters in the DuoSens main window:

– RS-232 C/V.24 – COM1 – 19200

� Start terminal mode: Select DuoSens | Terminal mode menu.� Wake DuoSens: A <Enter key> reply: ?08� Start SDI mode: CL/SDI/TRANSP/A <Enter key> "A" stands for the terminal

to which the SDI-12 sensor is attached. Entry prompt for SDI-12 commandsappears: SDI-12>

� Example - Switch off sensors: SDI-12>aX0! Answer: aX0<crlf>

� End terminal mode: Press ESC key.

Fig. 123: Terminal mode

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19 Error messages

19.1 Internal error messages

Display: LxxInternal errors arise when recording and processing measured values in the wholemeasurement route from sensor to storing in memory or on the display.

00 – Measured value ok01 – AD conversion incorrect02 – Communication error03 – Over/underflow 05 – Line break06 – Dependent on sensor type

19.2 External error messages

Display: SxxExternal errors occur in "intelligent sensors" and are sent to the DuoSens.

19.3 Error messages from sensors

0 … 10 V

Internal errors: 01 Analog-digital conversion incorrect03 Over/underflow: Uin < –1.0 V or Uin >12.0 V

External errors: none

0 … 5 VInternal errors: 01 Analog-digital conversion incorrect

03 Over/underflow: Uin < -0.4 V or Uin >5.625 VExternal errors: none

0 … 50 mVInternal errors: 01 Analog-digital conversion incorrect

03 Over/underflow: Uin < -2.25 mV or Uin >52.25 mVExternal errors: none

0 … 20 mAInternal errors: 01 Analog-digital conversion incorrect

03 Over/underflow: Iin < –2 mA or Iin > 22 mAExternal errors: none

4 … 20 mAInternal errors: 01 Analog-digital conversion incorrect

03 Over/underflow: Iin < –2 mA or Iin > 22 mA05 Line break

External errors: none

Pt 100Internal errors: 01 Analog-digital conversion incorrect

03 Over/underflow: t < –100 °C or t > 140 °CExternal errors: none

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Impulse inputInternal errors: noneExternal errors: none

KalestoInternal errors: 02 Communication error

05 Line breakExternal errors: 01 Reflexion level too low

02 Multiple target situation. No measured value can bedetermined.

04 Measurement range exceeded, measured value < 1.50m or > 30.00 m

08 A constant measured value cannot be determinedError messages from Kalesto

ParsivelInternal errors: 02 Communication error

05 Line breakExternal errors: Error messages from the intelligent OTT sensors attached

SDI sensor and SDI sensor via RS-485Internal errors: 02 Communication error

05 Line break: Sensor not respondingExternal errors: 02 Communication error: Sensor sending more measured

values than stated03 Over/underflow: SDI sensor sending "99999"

19.4 Error messages from processing modules

AveragingInternal errors: noneExternal errors: none

Min/Max filterInternal errors: 03 Filter limits undershot/exceededExternal errors: none

StoreInternal errors: 03 Measured value does not fit into 24 bits of the databaseExternal errors: none

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20 Note for disposing of old units

In accordance with the relevant national implementation of the EU Directive2002/96/EGm, for member states of the European Union OTT takes back oldunits and disposes of them properly. The units affected are identified with theadjacent symbol.

For further information on the return procedure, please contact your ocal salescontact. You will find the addresses of all sales partners in the internet onwww.ott.com. Please take into consideration also the national implementation ofthe EU guideline 2002/96/EC of your country.

21 Maintenance

The DuoSens does not require any special maintenance work.

Never open the casing of the DuoSens. There are no adjustment or control elements inside the casing!

In case of device defects, contact the repair center of OTT:

OTT Hydromet GmbHRepair CenterLudwigstrasse 1687437 Kempten · GermanyPhone +49 831 5617-433Fax +49 831 [email protected]

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22 Technical data

Supply voltage +5 … +28 VDC; typ. +12 VDC

Power consumption (at 12 VDC)active, measurement approx. 15 mAactive, measure with RS-232 expansion approx. 20 mAactive, measure with analog expansion max. 100 mA4 … 20 mA interface, internally suppliedsleep approx. 50 μAsleep (contact (B1/2 or approx. 500 μA B3/4 closed)

Protection level inputs up to 36 V 1)

Display graphics enabled DOT matrix 122 x 32pixels 2)

ClockType Battery buffered realtime clockAccuracy ±1 minutes/month (at +25 °C)Buffer battery type CR 2032; 3 V Life of buffer battery 10 years (replacement after 5 years

recommended)Interface 1 x RS-232-C

Inputs

Impulse input (B1/2, B3/4)Frequency 0 … 50 HzDebouncing 8.4 msmin. impulse duration 8.4 ms max. contact resistance 10 kOhm at >8 VDC

Status input (B1/2, B3/4)Frequency 0 … 50 HzDebouncing 8.4 ms max. contact resistance 10 kOhm at > 8 VDC

Analog input (C … F) 3)

Input range 0 … 50 mV; 0 … 1.25 / 5 / 10 VRi with respect to ground typ. 4 MOhm / typ. 100 kOhmAccuracy 0.1 % of full scaleResolution 0 … 50 mV: 50 μV; rest: 1 mVMeasuring time 300 msec

Input range 0 … 20 mA; 4 … 20 mARi typ. 50 Ohm / max. 400 OhmAccuracy typ. 0.1 % / max. 0.3 % of full scaleResolution 1 μAMeasuring time 300 msecSupply voltage of external sensors typ. 24 V; max. 28 V at supply voltage

> 24 V !

Input range potentiometer 0 … 5.5 kOhmAccuracy 1000 ppm of full scaleResolution 100 ppmMeasuring time 700 msecBroken line detection at typ. >13 kOhm

1) Protection from externally applied voltage (static)2) only with DuoSens standard version with LCD display3) only with analog expansion

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Input range Pt 100 –40 … +85 °CAccuracy

–40 … –30 °C ±0.3 K–30 … +40 °C ±0.1 K+40 … +70 °C ±0.3 K

Resolution 0.01 KMeasuring time 850 msec

RS-232-input (C/D, E/F) 1)

Protocol OTT protocol (instantaneous value, lastsaved value, time synchronization; pins 2, 3+ 5)

Connection assignments Pin Signal Direction1 carrier detect DCD in2 receive data RxD in3 send data TxD out4 data terminal ready DTR out5 ground GND GND6 data set ready DSR in7 request to send RTS out8 clear to send CTS in9 ring indicate RI in

Worst case timeout per measured value 55 s

Outputs

Switching output (VBat; M3/4)Voltage max. 16 VDC

Ampacity max. 10 A

Switching output (galvanically separated; M1/2)Voltage max. 28 VDC

Leakage current < 5μA/28 VDC

Ampacity max. 10 mA; UCE < 0.5 VDC

Pullup Rmin 3 kOhm at 28 VDC

Data memoryStorage capacity available for measured values 4,096,000 bytesNumber of measured values that can be stored average 500,000Storage space required

per measured value 8 bytesper channel and day block max. 24 bytesInfo channel, per entry 8 bytes

Data storage type Ring buffer (FIFO)Number of logical channels 30 + 1 Info channelPhysical channels (input signals) Impulse/status/voltage supplySample interval 5 seconds … 24 hoursStorage interval 5 seconds … 24 hoursIndividually configurable functions – Number of decimal places

– instantaneous value display 2)

– observer function 2)

– password protection 2)

– mean calculation – sums – delta storage – limit – filter – status alarm – relay contact output – virtual sensor – virtual terminal – manual sensor (manual input)

1) only with RS-232 expansion2) only with DuoSens standard version with LCD display

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EMC limits

complies with EN 61000-4-2 degree ofseverity 2 (4 kV contact discharge)complies with EN 61000-4-3 degree ofseverity 2 (3 V/m)complies with EN 61000-4-4 degree ofseverity 5 (4 kV)complies with EN 61000-4-5 degree ofseverity 5 (4 kV)

Resistance to HF, asymmetric complies with EN 61000-4-6 (10 V)complies with EN 55022 Class B (300 …1000 MHz)

Mechanical limits

Dimensions L x W x H 140 mm x 100 mm x 68 mmWeight approx. 0.240 kgHousing material ABSType of protection IP 30Temperature range

Operating temperature –40 °C … +70 °CStorage temperature –50 °C … +85 °C

Relative humidity 0 … 95 % (non-condensing)

Resistance to electrostatic discharge (ESD)

Line-borne and radiated interference

Resistance to surge

Resistance to transient fields (burst)

Resistance to electromagnetic fields

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Appendix A: Automatic, cyclical data transmissionactivate via ISDN D channel (active communication)

The OTT DuoSens can transmit stored measured values automatically and cyclicallyvia the D channel of an ISDN fixed line connection (e.g. "Datex-P ISDN Access"from T-Systems). The transmission of the measured values is carried out in binaryin the OTT protocol. For this, a D channel compatible ISDN terminal adapter mustbe installed on the DuoSens. A PC also with a D channel compatible ISDN termi-nal adapter installed and the application software OTT Hydras 3 and the OTTCommunication Manager serves as the receiver.

Requirements� The terminal adapter used (TA+ODD/OTT) requires software version V1.004

or higher. The software version can be checked with a terminal program andthe AT command ati3[CR] .

Required settings

in the terminal adapter:

� Enter TEI (Terminal Endpoint Identifier; you receive the TEI from your telecom-munication provider): with a terminal program and the AT command enterat**tei=[##][CR]. ## = TEI to be entered. The factory setting is the TEI"1". The TEI set can be checked with the AT command at**tei[CR] .

� Enter the initialization string AT&FE0&D0Q0B21S0=1&W0 once only using a terminal program and save.

In function block "Communication interface COM1"; "General" tab","Modem/adapter" and "Data transmission":

� DuoSens baud rate: 57600 bit/s� DuoSens modem initialization string: AT&FE0&D0Q0B21S0=1� Mode for data transmission: X.31 (ISDN D channel)� Standard cycle: 1 hour (example)� Telephone number: always enter with country code. (example: 0049831…)� Channels transmitted: All (example)

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Appendix B: Detailed information and example PHP script

HTTP GET last saved valueThe HTTP GET command executes a PHP script on the server side.The transfer of the data is carried out in the command line in the form

?station = 10-position station number&idnnnn = 4-position sensor number&vxx = measured value with decimal point&txx = ANSI time of the measured value YYYYMMDDhhmmssxx = Numbering per sensor (1 ..)

Example of the actual data content:?station=GPRSINTERV&id1=0001&t1=20080201134200&v1=13.86

Example-PHP-Script<?php

if (((StrLen($_GET['station'])) < 5) and ((StrLen($_POST['OTTDATA'])) < 20))

{

print(gmdate("Y-m-d")."T".gmdate("H:i:s"));

}

if ((StrLen($_GET['station'])) > 5)

{

$Station = $_GET['station'];

print ("Stationsname ".$Station."\r\n");

$Index = 1;

$IdString = 'id'.$Index;

$filename = "./OTTDATA/".$Station ."_".gmdate("YmdHis").".MIS";

$fp = fopen($filename,"w");

while (isset($_GET[$IdString])){

$Sensor = $_GET[$IdString];

$ValueString = 'v'.$Index;

$DateTimeString = 't'.$Index;

$DataTime = str_split ($_GET[$DateTimeString], 8);

$DateTime[0] = sprintf ("%.8s", $_GET[$DateTimeString]);

$MisHeader = sprintf ("<STATION>%s</STATION><SENSOR>%s</SENSOR><DATEFORMAT>YYYYMMDD</DATEFORMAT>\r\n", $Station, $Sensor);

$MisData = sprintf ("%s;%s;%s\r\n",$DateTime[0], $DataTime[1],$_GET[$ValueString]);

fwrite($fp,$MisHeader);

fwrite($fp,$MisData);

/*print("Sensor : ".$_GET[$IdString]." Wert :".$_GET[$ValueString]."Datum : ".$DateTime[0].";".$DataTime[1]."\r\n"); */

$Index = $Index +1;

$IdString = 'id'.$Index;

}

fclose($fp);

if ($Index > 1) print ("OK DONE\r\n");

}

if ((StrLen($_POST['OTTDATA'])) > 20)

{

$filename = "./OTTDATA/".substr($_POST['OTTDATA'],9,10)."_".gmdate("YmdHis").".MIS";

$fp = fopen($filename,"w");

fwrite($fp,$_POST['OTTDATA']);

fclose($fp);

print ("OK DONE\r\n");

}

?>

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Appendix C: Declaration of conformity for DuoSens modular datalogger

OTT Hydromet GmbH

Ludwigstrasse 1687437 Kempten · GermanyPhone +49 831 5617- 0Fax +49 831 5617- 209

[email protected] · www.ott.comDocument number55.551.008.B.E 04-0511

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