9182 an g - file.yizimg.com

Operator ManualPOLYMETRON 9182Oxygen analyzer (ppb)

221=191=082 - Revision G - 20/11/2007

Restriction of Hazardous SubstancesNote:The following only applies to exports of the product into the People’s Republic of China.

Marking

Products contain toxic or hazardous substances or elements.

Environment Protection Use Period Marking (years).

Toxic or Hazardous Substances and Elements

Part NameLead (Pb)

Mercury (Hg)

Cadmium (Cd)

Hexavalent Chromium

(Cr VI)

Polybrom Biphenyls

(PBB)

Polybrom Diphenyls

(PBDE)

Transmitter box X

CPU PCB O O

Power PCB O O

Relay PCB O O

Module O

Probes O

Cable O

O: Indicates that this toxic or hazardous substance contained in all homogeneous material for this part is below the limit requirement

X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement

Oxygen analyser (ppb) - 9182 -

i

This instrument conforms to the European Directives:

- 89/336/CEE modified by the directive 93/68/CEE - 73/23/CEE modified by the directive 93/68/CEE

Warning!

There are no user-serviceable parts in either the transmitter or sensor. Only Hach Ultra Analytics personnel or their authorized representative should attempt repair of the system and only components expressly approved by the manufacturer should be used. Any attempt to repair the instrument in contradiction of these guidelines may result in damage to the instrument and injury to the person making the repair. It will also void the warranty and may compromise the safe operation, electrical integrity or CE compliance of the instrument. Note:

This equipment has been tested and found to comply with the limits for Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Precautionary Labels: Read all labels and tags attached to the instrument. Personal injury or damage to this instrument could occur if not observed.

This symbol, if noted on the instrument, references the instruction manual for operation and / or safety information.

Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after 12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European electrical equipment users must now return old or end-of life equipment to the Producer for disposal at no charge to the user.

Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-of-life equipment for proper disposal. Important document. Retain with product records.

!


ii

COPYRIGHT

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior permission of Hach Ultra Analytics.

Hach Ultra Analytics

Hach Ultra Analytics can take no responsability for installation and/or use of its equipment if this is not done in accordance with the appropriate issue and/or amendment of the relevant manual. The user of this manual should ensure that it is appropriate in all details to the exact equipment to be installed and/or operated. If in doubt, the user should contact Hach Ultra Analytics for advice.

WARNING

To maintain safety standards, regular maintenance, calibration and operation of this equipment by qualified personnel is essential. Read and understand Instruction manual completely before operating or servicing. If any further details are required which do not appear in this manual contact Hach Ultra Analytics or their agent.


iii

Warnings Changing the programming language

The programming language is English when factory-programmed, when changing the software version and when loading the default values. To change the language follow the procedure below (example for French):

(Press 3 times)

!

AVERAGE CODE SOFT ISSUE DEFAUT VAL. ADJUST mA CONFIGURATION POLYMETRON

SERVICE

Select

DISPLAY

CALIBRATION MAINTENANCE PROGRAMMING

MENU

Select

SERVICE

CONC : ppb/ppm

TEMP. : °C

PRESSION : mmHg

LANGUE :

AFFICHAGE

Choix

F

CONC : ppb/ppm

TEMP. : °C

PRESSURE : mmHg

LANGUAGE :

DISPLAY

Select

GB

CONC : ppb/ppm

TEMP. : °C

PRESSURE : mmHg

LANGUAGE :

DISPLAY

Select

F

6.59 ppb

23.2 °C O2

Disp2 Menu Enter

Enter

Enter

Esc


iv

Programming the mains supply frequency:

When your programming language is chosen, you may change the mains supply frequency if necessary. This change occurs at the first switching on and afterresetting the instrument. Follow the procedure below:

AVERAGE DISPLAY CODE SOFT ISSUE DEFAULT VAL. ADJUST mA POLYMETRON

SERVICE

Select

CONFIGURATION

CALIBRATION MAINTENANCE PROGRAMMING

MENU

Select

SERVICE

FREQ :

CONFIGURATION

Select

50Hz

6.59 ppb

23.2°C O2

Disp2 Menu Enter

Enter

FREQ :

CONFIGURATION

60Hz

Enter

!

Enter Reset the instrument


Table of contents

Page

Warnings .................................................................................................................................... iii Chapter 1: Introduction ............................................................................................................. 1-1

1.1 Introduction ........................................................................................................ 1-1 1.2 Principle of operation........................................................................................... 1-1 1.3 Main characteristics............................................................................................ 1-3 1.4 Technical characteristics..................................................................................... 1-3 1.5 Dimensions ........................................................................................................ 1-6

Chapter 2: Description of the analyser...................................................................................... 2-1 2.1 Analytical part .................................................................................................... 2-1 2.2 Hydraulic mounting ............................................................................................. 2-2 2.3 Transmitter......................................................................................................... 2-3

2.3.1 Presentation of the transmitter ................................................................. 2-3 2.3.2 Application fields .................................................................................... 2-5 2.3.3 Standard mounting possibilities (use of the red clamping bow) .................... 2-5

Chapter 3: Installation of the instrument................................................................................... 3-1 3.1 Unpacking.......................................................................................................... 3-1 3.2 Inspection .......................................................................................................... 3-1 3.3 Mounting............................................................................................................ 3-1 3.4 Location............................................................................................................. 3-1 3.5 Electrical connections ......................................................................................... 3-2 3.6 Description of the different terminals ..................................................................... 3-3 3.7 Mains connection ............................................................................................... 3-4 3.8 Starting the transmitter........................................................................................ 3-4 3.9 Adjusting the display contrast.............................................................................. 3-4

Chapter 4: Using the instrument................................................................................................ 4-1 4.1 Front panel keys................................................................................................. 4-1 4.2 Displays 1 to 4 (live displays)............................................................................... 4-2 4.3 Description of the function keys ........................................................................... 4-3 4.4 Icons ................................................................................................................. 4-3 4.5 Enter or modify a value........................................................................................ 4-4 4.6 Warnings ........................................................................................................... 4-4

Chapter 5: Programming the transmitter .................................................................................. 5-1 5.1 Main menu......................................................................................................... 5-1

5.1.1 Calibration Menu..................................................................................... 5-2 5.1.2 MAINTENANCE Menu............................................................................. 5-3 5.1.3 PROGRAMMING Menu........................................................................... 5-3

5.1.3.1 MEASURE Menu ....................................................................... 5-4 5.1.3.2 ALARMS Menu .......................................................................... 5-5 5.1.3.3 mA OUTPUTS menu................................................................... 5-8 5.1.3.4 RS485 Menu.............................................................................5-11

5.1.4 SERVICE Menu.....................................................................................5-12 5.1.4.1 AVERAGE Menu.......................................................................5-12 5.1.4.2 DISPLAY Menu.........................................................................5-13 5.1.4.3 CODE Menu .............................................................................5-14


5.1.4.4 SOFT VERSION Menu...............................................................5-15 5.1.4.5 DEFAUT VAL. Menu..................................................................5-15 5.1.4.6 mA ADJUST Menu ....................................................................5-16 5.1.4.7 CONFIGURATION Menu ............................................................5-17 5.1.4.8 POLYMETRON Menu ................................................................5-17

Chapter 6: Calibrating temperature compensation................................................................... 6-1 6.1 Calibration of the temperature sensor.................................................................... 6-1

6.1.1 Automatic temperature compensation....................................................... 6-2 6.1.2 Manual temperature compensation........................................................... 6-3

6.2 Calibration of the measurement ............................................................................ 6-4 6.2.1 Slope calibration in the air + electrical zero ............................................... 6-4 6.2.2 Slope calibration in the air + chemical zero ............................................... 6-5 6.2.3 Slope process calibration + electric zero................................................... 6-6 6.2.4 Slope process calibration + chemical zero ................................................ 6-7

Chapter 7: Start up, maintenance and troubleshooting ............................................................ 7-1 7.1 Start up ............................................................................................................. 7-1

7.1.1 Assembling the probe ............................................................................. 7-1 7.1.2 Probe connection.................................................................................... 7-3 7.1.3 Main power supply connection ................................................................. 7-3 7.1.4 Starting up the analyser .......................................................................... 7-3

7.2 Changing the membrane...................................................................................... 7-4 7.2.1 Dismounting the membrane ..................................................................... 7-5 7.2.2 Mounting the new membrane ................................................................... 7-6

7.3 Oxygen electrode rejuvenation procedure .............................................................. 7-7 7.4 Functional troubleshooting................................................................................... 7-7 7.5 Electrical troubleshooting ...................................................................................7-11

Chapter 8: Error messages........................................................................................................ 8-1

Appendix 1: Pressure conversion table .................................................................................. A1-1 Appendix 2: Temperature conversion table............................................................................ A2-1 Appendix 3: Default values..................................................................................................... A3-1 Appendix 4: Detailed cable connections ................................................................................ A4-1 Appendix 5: Security data sheet............................................................................................. A5-1 Appendix 6: Spare parts list.................................................................................................... A6-1 Appendix 7: RS485 MODBUS-JBUS addressing....................................................................... A7-1


1-1

Chapter 1: Introduction

1.1 Introduction The 9182 oxygen analyser is a one-channel analyser for the measurement of dissolved oxygen in the boiler feedwater, economizers, condensers and more generally all thermal equipment using water as a heat transfer liquid.

1.2 Principle of operation The measurement of dissolved oxygen is based on the well-known Clark cell principle. An oxygen-permeable membrane isolates the electrodes from the sample water, thus obviating the need for sample conditioning. Other reducible or oxidizable ions do not interfere, because they cannot pass through the gas-permeable membrane. A constant voltage supply powers two electrodes, maintaining each at a constant potential. A gold working electrode (cathode) reduces the dissolved oxygen to hydroxyl ions:

O2 + 2H2O + 4e- → 4OH- A large silver counter electrode (anode) provides the oxidation reaction which occurs on its surface:

4Ag+ + 4Br- → 4AgBr + 4e- The reduction of oxygen is the current limiting reaction, thus making the cell current linearly proportional to the dissolved oxygen concentration. Electrochemical reactions and diffusion rates are temperature-sensitive. The measuring cell, therefore, is equipped with a temperature sensor which allows an automatic temperature compensation.


1-2

Principle of oxygen cell

1

23

5

2

6

7

4

27

8

9

1 : Assembled electrode 6 : Membrane holder

2 : Electrolyte 7 : Membrane

3 : Probe body 8 : Cathode

4 : Filling hole 9 : Sample

5 : Anode


1-3

1.3 Main characteristics

3 Range 0-2 ppm

3 Calibration in the air

3 Temperature compensation

3 Programmable alarm levels, outputs on relays

3 4-20 mA, 0-20 mA analogue outputs (standard) and RS485 (option)

3 Wall- , panel- and tubing mounting

1.4 Technical characteristics

SAMPLE

Number of channels 1

Temperature 0-45 °C (32-113 °F)

Working pressure Atmospheric pressure

Flowrate 4...10 l/h

ELECTRICAL CHARACTERISTICS

Mains • Standard version: 100...240 VAC - 50/60 Hz

• Low voltage version: 13...30 VAC 50/60 Hz 18...42 VDC

Power consumption 25 VA

Connections 2,5 mm² screw terminal

Fuse 5 x 20 mm cartridge - T2AL - 250V


1-4

ANALYSIS

Measuring range 0...2 ppm

Sensibility ≤ 0,5 ppb

Reproducibility ± 0,5 ppb or ± 2% whichever the greater

Detection limit ≤ 1 ppb

Response time (90 %) ≤ 3 min

Ambient temperature -20...60 °C (-4...140 °F)

Relative humidity 10...90%

TRANSMITTER

Display Display in concentration units Display of the direct, concentration dependent cell current in µA Display of the sample temperature in °C/°F Programming via menus

Units nA, µA, ppb-µg/l, ppm-mg/l, °C, °F

Calibration Electrical zero, chemical zero, slope calibration in the air, slope process calibration by comparison with a laboratory measurement

Interferences Any gas liable to reduce to a potential > - 850 mV

Analogue outputs 2 x 0/4... 20 mA isolated from input signal, 800 Ohms load maximum - for the measure or for the temperature - mode: linear, bi-linear - accuracy: 0,1 mA

Alarms Number: 4 - Functions: alarm - system alarm - timer - Hysteresis: 0...10% - Delay: 0...999s - Breaking power: 250 VAC, 3A maximum 30 VDC, 0,5A maximum

Use a cable (rated 105 °C and AWG22 to 14). The external cable insulation should be cut as close as possible from the terminal block.


1-5

Temperature compensation Automatic in the range of 0...45 °C (32...113 °F)

RS485 (option) Speed: 300...9600 baud Insulation: galvanic Station number: 32 maximum

Transmitter protection IP65 (NEMA 4X in option)

Measurement category I (overvoltage less than 1500 V)

Error reports Cell current > 999 µA Sample temperature > 45 °C (113 °F) or < 0 °C (32 °F) Ambient temperature > 45 °C or < 0 °C (32...113 °F) during air calibration Slope calibration error Zero calibration error (offset)

ELECTROMAGNETIC COMPATIBILY

European standards EN 61326-1997 and EN 61326 A1-1998 (Industrial level for immunity)

Low voltage standard IEC61010-1

UL and CSA agreement File E226594

MATERIALS

Working electrode Cathode: gold

Counter-electrode Anode: silver

Membrane holder Noryl

Membrane PFA

Transmitter Aluminium + polyester painting

Probe body Noryl

Probe with optional immersion Stainless steel 316L


1-6

MAINTENANCE

Approximative membrane lifetime ≈ 6 months depending on the sample

Cleaning Clean the instrument with a soft tissue and without any aggressive agent

OPERATING CONDITIONS

Ambient temperature -20...+60 °C

Relative humidity 10...90 %

Power supply voltage fluctuation ± 10 %

Over voltage category 2

Pollution degree 2 (as CEI 664)

Altitude < 2 000 m

Measurement category I (overvoltage less than 1500 V)

1.5 Dimensions (Dimensions are in mm and [in inches])

polymetron

polymetron


2-1

Chapter 2: Description of the analyser

2.1 Analytical part

1

2

3

4

56

Figure 2-1: Electrode cross-section Figure 2-2: Complete probe

1 : Connector 1 : Adjusting nut

2 : Anode holder 2 : Electrode

3 : Anode 3 : Probe body

4 : Cathode holder 4 : Membrane

5 : Cathode 5 : Filling screw

6 : Temperature sensor 6 : Gasket


2-2

2.2 Hydraulic mounting

(Dimensions are in mm [inches])

1 : Cable 5 : Cell

2 : Shrink ring 6 : 1/4" NPT connector (not provided)

3 : Assembled probe 7 : M4 screws (not provided)

4 : Probe gasket 8 : 1/4" NPT connector (not provided)


2-3

2.3 Transmitter 2.3.1 Presentation of the transmitter

Esc Enter

18.6 °Cppb

2.10

Polymetron

O2Disp2 Menu

S1

S2 S4

S3

The electronic unit amplifies the signal of the amperometric measuring cell and converts it into a direct digital readout in ppm, mg/l, ppb, µg/l, °C and °F. The transmitter comprises the following items: n Potentiostat which maintains the working electrode potential constant n Amperometric measuring module n Analog multiplexer n Microprocessor unit The analog multiplexer allows measurements to be acquired from the measuring cell, temperature sensor and internal checkpoints. Further, the microprocessor operates the relays, the RS485 interface (optional) and the analog outputs. The unit has a built-in concentration-autoranging feature and a microprocessor-operated calibration routine. The output of the potentiostat is monitored for possible overdriving of the potentiostat-output stage. This condition can occur with the connections to the measuring cell open, inoperable electrodes or a defective reference electrode.


2-4

Transmitter synoptic below is:

1 : Programmable potentiostat 6 : Auxiliary input

2 : Polarization voltage amplifier 7 : Multiplexer

3 : Reversing switch for a 2 or 3 electrode operation. In the 9181 the configuration is 2 electrodes

8 : A/D converter

4 : Temperature measurement circuit 9 : Microprocessor

5 : Measurement circuit current amplifier


2-5

2.3.2 Application fields Easy-to-use (installation, programming), this instrument is suitable for the following applications: - boiler feedwater, - ultrapure water. 2.3.3 Standard mounting possibilities (use of the red clamping bow) The transmitter housing conforms to norm DIN 43700.

Panel mounting

Panel cutting : 138 × 138 mm Front panel dimensions : 144 × 144 mm Ρ 2 screws ∅ 4 mm lg 16 flat head (provided) for panel thickness 0 to 4 mm Ρ 2 screws ∅ 4 mm lg 20 flat head (provided) for panel thickness 4 to 8 mm


2-6

Wall mounting

Ρ 2 screws ∅ 4 mm lg 60 flat head (not provided) / 80 mm center distance

Vertical pipe mounting Ρ ∅ 2" maximum - 2 screws - ∅ 4 mm lg 60

(provided)

Horizontal pipe mounting Ρ ∅ 2" maximum - 2 screws ∅ 4 mm lg 60 (provided)

polymetron


3-1

Chapter 3: Installation of the instrument

3.1 Unpacking The analyzer should be unpacked with great care. Make sure not to loose any accessory when unpacking.

3.2 Inspection The analyzer has been factory-checked and tested prior to shipment, it is however advisable to inspect all parts immediately upon receipt for any damage which may have occurred during shipment. A damaged shipping container may indicate internal damage which may not be immediately obvious. If there is any evidence of damage, keep the shipping container and refer to your local agent or to:

Hach Ultra Analytics

6 route de Compois - CP212 CH-1222 Vesenaz Geneva

3.3 Mounting

CAUTION!

Mounting should be done by qualified service personnel only. No power should be applied until the installation is complete.

3.4 Location The analyser should be located in an accessible site. The site should permit the access for any checking or maintenance operation. The sample flowrate has to be maintained within the specifications (See § 1-4).


3-2

3.5 Electrical connections 3 MONEC Do not switch on the instrument until completion of the installation. An aluminium armour plate inside the MONEC gives a detailed description of the different terminals and their connections: 1. Microprocessor board 2. Relay board 3. Amperometric board 4. Power supply board 5. Program update connector

Λ The different terminals represented on the right side are accessible by removing the armour

plate.

1

2

3 45


3-3

3.6 Description of the different terminals

Description Connection 0…20 mA or 4…20 mA (n°1) [+] user

0…20 mA or 4…20 mA (n°1) [-] user

0…20 mA or 4…20 mA (n°2) [-] user

0/4...20 mA outputs galvanically insulated

0…20 mA or 4…20 mA (n°2) [+] user

user

Option RS485

user

Description Colour Connection Temperature sensor [+] black temp + Temperature sensor [-] blue temp -

Reference if use of 3 electrodes

not used on the 9182 oxygen analyser

Counter electrode (anode) red counter Working electrode (cathode) white work Auxiliary input aux.

Amperometric module

External shield braid armour plate

Internal shield brown GND

Not used for the oxygen measurement n.c.

Mains, 100…240 VAC 50/60 Hz or 24 V AC/DC (special version)

Description Connection Alarm 1, simple contact user Alarm 2, simple contact user Alarm 3 or alarm system, simple contact user

Alarm 4 or timer, simple contact user


3-4

Λ Electrical connections should remain dry to ensure a proper operation of the

instrument. Check the creeping of the cables when opening the transmitter.

Λ It is required to use shielded cables. This shielding should be connected to the earth central shielding.

3.7 Mains connection Electrical connection should be performed only by qualified personnel. The power supply accepts 100-240 VAC ± 10 %, (50/60 Hz) without changes in configuration. The terminal block for power connections can be lifted from its header for easier installation. For safety reasons, it is required to observe the precautions below: • Use a three wire mains supply cable (2 core + PE) with a cross section between 0.35 and 2 mm2

(AWG 22 to 14) rated at 105 °C minimum. The external cable insulation should be cut as close as possible from the terminal block.

• The instrument should be connected to the power supply by means of a breaker located close

to the instrument and be identified. The supply shall be fitted with an overcurrent protection device rated at 20 Amp maximum.

• This breaker should switch off phase and neutral in case of electrical problems or when the user

wish to service the instrument. However the power supply earth must always be connected.

Before servicing the instrument, ensure that the power supply is switched

off.

3.8 Starting the transmitter Before switching on the transmitter, make sure the site voltage corresponds to the instrument voltage indicated on the identification plate.

3.9 Adjusting the display contrast If your display contrast is not sufficient, you can adjust it with the potentiometer P1 (blue colour, see figure page 3-2) which is located on the top left of the CPU board (after opening the enclosure).

!


4-1

Chapter 4: Using the instrument

4.1 Front panel keys The display may be programmed to indicate:

- Sample concentration - Sample temperature - Diffusion current - Programming codes - Programming arguments

Esc Enter

18.6 °Cppb

2.10

Polymetron

O2Disp2 Menu

S1

S2 S4

S3

Figure 4-1: Front panel

Suppress an action or go back to previous step

Choice of the unit or numeric value

Oxygen application

Validate and switch to next step


4-2

4.2 Displays 1 to 4 (live displays)

6.59 ppb: concentration measurement (ppb unit)

23.2 °C: temperature measurement O2: application S1...S4: alarm statut (invisible if alarm

inactive)

Display of the parameters measured: Concentration Temperature Cell current

S1...S4: alarm statut In this case relays S1 and S3 are activated

Analogue output allocation and level

6.59 ppb

23.2 °C O2 Disp2 Menu

S1

S2

S3

S4

S1 : ppb > 3 S2 : OK S3 : ppb > 5 S4 : OK Disp4

S1 S3

6.59 ppb 23.2 °C 5.942 µA

Disp3

S1

S2

S3

S4

I1 : Conc

I2 : Conc

Main

4.9 mA

4.9 mA


4-3

4.3 Description of the function keys The function keys below have their signification highlighted at the bottom of the screen:

Modify a parameter

Select Scrolling in a list of menus

Main Go back to the main display

Menu Display the main menu

Disp2 Display screen 2



OK Validate the measure during the calibration

Yes Confirm a command

- Decrease a value

+ Increase a value

4.4 Icons

Symbol of waiting or instrument reset Alarm system for relay S3

Timer symbol: countdown for relay S4

P


4-4

4.5 Enter or modify a value The highlighted digit can be modified with the key . Each digit can be validated by pressing ENTER. Repeat both operations for each digit. Example:

4.6 Warnings Note 1: If you do not use the keyboard for at least 10 minutes, the instrument returns to the

measuring mode. Note 2: An access code may be required for the calibration, programming and service menu (see

§ CODE menu).

Possibility to display a negative first digit "-" Possibility to display a "." for the other digits

3 . 89 ppb

0

3 . 89 ppb 1

1 . 89 ppb

3

15 89 ppb .

15 . 9 ppb 8

1 . 89 ppb 5

15 . 9 ppb 3

15 . 3 ppb 9

15 . 3 ppb 7

15 . 37 ppb

15 . 37 ppm

increase of the digit value

to change the unit

validate the digit value Enter

Enter

Enter

Enter

Enter


5-1

Chapter 5: Programming the transmitter

5.1 Main menu

6.59 ppb

23.2 °C O2 Disp2 Menu

S1

S2

S3

S4

CALIBRATION MAINTENANCE PROGRAMMING SERVICE

MENU

Select

Choix

F

CONC. CALIB. TEMP. CALIB. PARAMETERS

CALIBRATION

Select

54.90 ppb 23.2 °C 8.05 µA

MAINTENANCE MEASURE ALARMS mA OUTPUTS RS485

PROGRAMMING

Select

AVERAGE DISPLAY CODE SOFT ISSUE DEFAULT VAL. ADJUST mA CONFIGURATION POLYMETRON

SERVICE

Select


5-2

5.1.1 Calibration Menu + Any calibration should follow the procedure below: Ê Configuration of the calibration characterics in the "PROGRAMMING" menu. Ë Realization of the calibration via the “EXECUTION” menu.

An access code may be required if it has been programmed (See § 5.1.4.3 CODE menu). See chapter 6 for a detailed programming of the calibrations. Some menus may appear or not according to how some parameters have been programmed.

PARAMETERS

DATE xx/xx/xx Date of the last calibration. The date programmed is not updated automatically

P x.xxx µA/ppm Slope value

∆T x.x °C Drift between the theorical temperature (sensor response) Th and the measured temperature Tm: ∆T = Th - Tm

Choix

F

TEMP. CALIB. PARAMETERS

CALIBRATION

Select

F

DATE : 01/01/98

P : 1.000 µA/ppm

∆T : 0.0 °C

PARAMETERS Choix

F

SLOPE

CONC. CALIB.

Select

ZERO

CONC. CALIB.

Select

TEMP. CALIB.

EXECUTION

Enter

Enter

Enter

!


5-3

5.1.2 MAINTENANCE Menu

Used for any maintenance operation in the instrument. The transmitter continues to display the variables measured.

The relay status is not modified. The analogue output value depends on the configuration defined in the mA OUTPUTS/ SPECIAL PROG./MAINTENANCE menu.

5.1.3 PROGRAMMING Menu

An access code may be required (See § 5.1.4.3 CODE menu)

!

6.75 ppb 21.6 °C 5.559 µA

MAINTENANCE

ALARMS mA OUTPUTS RS485

PROGRAMMING

Select

MEASURE


5-4

5.1.3.1 MEASURE Menu

TEMPERATURE COMPENSATION

TYPE - Auto - Manual

Choice of a temperature measurement with automatic compensation or with a manual compensation

If you have chosen a manual temperature compensation, the TEMP. CALIB. Menu is not accessible anymore

TEMP. - xx.x °C Possibility to enter the sample temperature in a manual compensation mode

SENSOR NTC/AD590 Type of temperature sensor used on the 9182 Oxygen analyser. You have to program the NTC

Choix

MEASURE

Select

Choix

F

SENSOR : NTC

TYPE : Manual

TEMP. : 25.02 °C

TEMP. COMP.

Select

TEMP. COMP.

Enter

!


5-5

5.1.3.2 ALARMS Menu Relays S1...S4 may be allocated to the limit, alarm system or timer functions. ò LIMIT FUNCTION: The alarm relays are activated if the comparison of the measured value with the limit programmed meets the alarm function condition (up or down). The limits are programmed according to the following programming variables:

ALARMS 1 … 4 (LIMIT)

AFFECT - Conc. - No - °C/°F

Choice to use a limit on the measure, on the temperature or not to use a limit.

LIM xxxx Enter a limit value

DIR. - Up - Down

Choice of the direction

DELAY xxxs Temporisation time before the relay is commutated (in seconds)

HYST. XX % Definition of the hysteresis limit in % (10 % max.) The hysteresis operates only on one side of the limit. The hysteresis is below the limit for the high alarm (up) and above the limit for the low alarm (down)

RELAY - NO - NC

Relay normally open or normally closed

Choix

F

ALARM 2 ALARM 3 ALARM 4

ALARMS

Select

ALARM 1

AFFECT. :

LIM. : 0.001 ppb

DIR : Down

DELAY : 000s

HYST. : 00 %

RELAY : NO

ALARMS

Select

Conc.


5-6

ò SYSTEM ALARM FUNCTION: The relay S3 may be used to indicate a faulty functioning of the analyser. It is required to connect the relay S3 to an external alarm system to control the faults traced by the analyser. The relay S3 is activated as soon as a default appears. In case of a manual acknowledgment, the relay remains activated even if the default disappears. It is required to press ENTER to desactivate the relay and the error message. In case of an automatic acknowledgment, the relay and the error message are desactivated when the default disappears.

ALARM 3 (ALARM SYSTEM)

MODE - No - Limit - Syst.

The alarm S3 may be programmed as a limit function (see paragraph above) or as an alarm system function

ACCEPT - Auto - Manu

In the case of an alarm system, choice between a manual (key ENTER) or an automatic acknowledgment

RELAY - NO - NC

Choice of S3 normally open or normally closed

MODE :

ACCEPT. : Auto

RELAY : NC

ALARM 3

Select

Syst.


5-7

ò TIMER FUNCTION: Relay S4 may be affected to a timer function.

ALARM 4 … (TIMER)

MODE - No - Limit - Timer

Choice between a limit (see parameters above) or a timer function for alarm 4

INTERV XXXXmn Interval between 2 cycles (in minutes)

IMPUL. X Number of pulses during an active cycle

Ton XXXs Adjustment of the relay active time (in seconds) for each pulse

Toff XXXs Adjustment of the relay inactive time (in seconds) for each pulse

TmA XXmn Hold time for the analogue outputs after each cycle Λ The analogue output status depends on the

configuration of the menu mA OUTPUTS/SPECIAL PROG./TIMER

Example of a timer operating cycle:

Relay S4Pulse number

Closed

Open

Ton Toff TmA

Interval

Time

MODE :

Interv : 1440 mn

IMPUL. : 5

Ton : 005 s

Toff : 003 s

TmA : 05 mn

ALARM 4

Select

Timer


5-8

5.1.3.3 mA OUTPUTS menu The analogue output signals allow the transmission of the measurements from the analyser to any external control system. It is highly recommended to use shielded cables for the output signals. This shielding should be connected to the earth terminal on the armour plate.

OUTPUT 2 SPECIAL PROG. TEST

mA OUTPUTS

Select

OUTPUT 1

CALIBRATION

SYST. ALARM.

TIMER

SPECIAL PROG.

Select

MAINTENANCE

AFFECT. : TYPE : 4-20 MODE : Lin LOW : 00001 nA UP : 100.0 µA

OUTPUTS 1/2

Select

Choix

F

MODE : VALUE : 00 mA

SPECIAL PROG.

Select

Preset

F

VALUE : mA

TEST

00

Enter

Enter

Enter

Enter

µA


5-9


5-10

OUTPUTS 1/2

AFFECT - Conc - µA - °C/°F

Choice of the analogue output allocation to the cell current, to the concentration or to the temperature measurement

TYPE 0/20 4/20

Choice of the analogue output type

MODE - Lin - Dual

Choice between a linear or dual range (see drawing below)

LOWER XXXX Bottom of the scale value

MIDD. XXXX Mid-scale value (only in dual mode)

UPPER XXXX Top of the scale value

SPECIAL PROG.

MODE - last - preset - live

Characteristics of the analogue output during calibration, alarm system, maintenance or timer active cycles: frozen to the latest stored before any operation listed above, forced to a preset value, live measurement

VALUE XX Preset value (0 to 21 mA)

TEST Test the analogue outputs by steps of 1 mA (0...21 mA) Illustration of the linear/dual outputs scales:

(%)

Upper 20 20

16 15

Middle 12 10

8 5

Lower 4 0

0 10 20 30 40 50 60 70 80 90 100

(mA)

Dual

Linear


5-11

5.1.3.4 RS485 Menu If the RS485 optional board is installed in your transmitter, program the parameters of the menu below. The RS485 optional board enables the connection between your analyser and a digital communication system. The Communication protocol is JBUS/MODBUS. Refer to the instruction manual “JBUS/MODBUS communication” (part number: 621=991=000) for further details and to the Appendix 7 for the address list.

RS485

N° XX MONEC number (0...32)

BAUD - 300 - 600 - 1200 - 2400 - 4800 - 9600

Transmission speed in baud

PARITY - No - Odd - Even

Without parity bit With odd parity bit With even parity bit

BIT STOP - 1 - 2

1 bit stop 2 bit stop

N :

BAUD : 9600

PARITY : No

STOP BIT : 1

RS485

Select

00


5-12

5.1.4 SERVICE Menu

An access code may be required if it has been programmed (see § 5.1.4.3 CODE Menu).

5.1.4.1 AVERAGE Menu

The measurement cycle lasts 4 seconds.

AVERAGE Program a moving average on the concentration measurement

AVERAGE X Define the number of measurements to calculate the average

TEST Display the difference between a measurement obtained with and without average

! AVERAGE DISPLAY CODE SOFT ISSUE DEFAULT VAL. ADJUST mA CONFIGURATION POLYMETRON

SERVICE

Select

AVERAGE : TEST

AVERAGE

Select

9

Average 3.46 ppb

Real 3.49 ppb

TEST

Enter


5-13

5.1.4.2 DISPLAY Menu

DISPLAY

CONC - ppb/ppm - µg-mg/l

Choice of the concentration unit

TEMP. - °C - °F

Choice of the temperature unit

PRESSURE - mmHg - mbar - InHg

Choice of the atmospheric pressure unit

LANGUAGE - F - GB - D - SP - I

Choice of the language: - french - english - german - spanish - italian

CONC :

TEMP. : °C

PRESSURE : mmHg

LANGUAGE : F

DISPLAY

Select

ppb/ppm


5-14

5.1.4.3 CODE Menu Protection codes may be programmed to access to the PROGRAMMING, CALIBRATION, SERVICE menus. This code may be desactivated by programming 0000.

CODE

CALIB. XXXX Access code to the calibrations

PROG. XXXX Access code to the “PROGRAMMING” menu

SERVICE XXXX Access code to the “SERVICE” menu If you forget your access code, press simultaneously ESC and ENTER to enter into the menu selected.

CALIB. :

PROG. : 0000

SERVICE : 0000

CODE

Select

0000


5-15

5.1.4.4 SOFT VERSION Menu This menu displays the software version installed in the instrument. 5.1.4.5 DEFAULT VAL. Menu

If you press YES, you load the default values and you loose the current programmed values and calibration parameters

MONEC 9182

OXY 1.00

SOFT ISSUE

!

Loading

default

values?

DEFAULT VAL

Yes

!


5-16

5.1.4.6 mA ADJUST Menu The analogue output signals are factory-adjusted (upper limit: 20 mA). However if you drift of the 20 mA appears on one of the outputs, the mA ADJUST menu enables you to correct the span value. Connect a amperometer in serial to the analogue output terminals and adjust the value till you read 20.0 mA on the amperemeter. + The value displayed does not correspond to a mA value.

Enter

OUTPUT 2

ADJUST mA

Select

OUTPUT 1

VALUE

ADJUST mA

-

0000

+


5-17

5.1.4.7 CONFIGURATION Menu You have to program the operating frequency so it matches with the mains supply characteristics. When the frequency is changed, the instrument is automatically resetted. 5.1.4.8 POLYMETRON Menu

This menu is reserved to Hach Ultra Analytics qualified personnel.

CODE :

POLYMETRON

0000

FREQ :

CONFIGURATION

60 Hz

Select

FREQ :

CONFIGURATION

50 Hz

Disp2

Please

wait...

Disp2 Menu

Start up ...

Disp2 Menu

Enter


6-1

Chapter 6: Calibrating the instrument

NOTE See chapter 5 for programming the commands.

REMARK Any result (calibration or measurement) is always brought back to the reference temperature (25°C, 77°F). If the sample temperature is different from the reference temperature, it is required to execute a temperature compensation which can be either manual or automatic.

6.1 Calibration of the temperature sensor The temperature sensor is located in the dissolved oxygen measurement probe. It is factory-preadjusted but needs to be calibrated in the sample on site. This calibration must be realised before the oxygen measurement calibration (slope + zero).


6-2

6.1.1 Automatic temperature compensation The sensor measures continuously the sample temperature. The concentration values are automatically calculated according to the reference temperature (25 °C) by a preprogrammed compensation law in the transmitter. Follow the procedure below:

PROGRAMMING

Choice of an automatic temperature compensation.

EXECUTION

The execution is realised with the CALIBRATION menu.

Enter the sample temperature value in °C. Press OK to adjust the temperature displayed to the actual value of the sample temperature measured with a precise thermometer.

The gap between the calibration and the theorical response curve of the sensor is given for information.

MEASURE

Select

TEMP. COMP.

TYPE :

SENSOR : NTC

TEMP : 25.0°C

TEMP. COMP.

Select

Enter

Auto.

TEMP. CALIB.

Select

EXECUTION

21.2 °C

6.87 ppm OK

CAL

21.2°C

1.2 °C CAL

2

ΔT : 0.0 °C

ENTER : ok

ESC : cancel

TEMP. CALIB.

Enter

Enter

Press OK when the measure is stable

Possibility to change the value


6-3

6.1.2 Manual temperature compensation This type of temperature compensation should be used only if your sample temperature is constant.

PROGRAMMING

Choice of a manual temperature compensation.

Enter your sample temperature.

EXECUTION Not applicable when a manual temperature

compensation is chosen.

MEASURE

Select

TEMP. COMP.

TYPE :

SENSOR : NTC

TEMP. COMP.

Select

Enter

TYPE :

TEMP. : 25.0 °C

SENSOR : NTC

TEMP. COMP.

Select

Enter

Manual

Manual


6-4

6.2 Calibration of the measurement The slope calibration can be done in the air or in water, with electrical zero or chemical zero. 6.2.1 Slope calibration in the air + electrical zero

PROGRAMMING

ZERO: Choice of an electrical zero. The electrical zero is carried out automatically by the transmitter at a regular frequency. Choice of the slope in the air.

SLOPE: Enter the atmospheric pressure in mmHg. Enter the ambient temperature in °C.

EXECUTION

SLOPE: Humidify the wadding of the calibration cap and take off the probe from the sample. Position the cap on the electrode and press ENTER. The probe should be positioned vertically with the membrane downwards (see page 7.1).

The flashing "cal" message indicates that the instrument is in calibration mode. Wait for the current stabilisation (approximately 10 min.) and press OK to validate the calibration. The oxygen concentration value flashes during 3 seconds.

The analyser displays the date of the last calibration and the new slope calculated. Modify the date if you wish. Put back the electrode in water.

TYPE :

P = 760.0 mmHg

Tamb = 20 °C

SLOPE CALIB.

Select

AIR

Enter

SLOPE

CONC. CALIB.

Select

ZERO

ZERO CALIB.

TYPE :

ZERO CALIB.

Select

EXECUTION

SLOPE CALIB.

Enter Enter

AutoElec.

PROGRAMMING

Select Select

PROGRAMMING

Enter

PROGRAMMING

SLOPE CALIB.

Select

EXECUTION

DATE : P : 1 nA/ppm

SLOPE CALIB.

Enter

01/01/98

Possibility to enter the date of the calibration

21.2 °ppm

25.0 °C 5.693 µA OK

CAL


6-5

6.2.2 Slope calibration in the air + chemical zero

PROGRAMMING

ZERO: Choice of the chemical zero. Choice of the slope in the air.

SLOPE: Enter the atmospheric pressure in mmHg. Enter the value of the ambient temperature.

EXECUTION

ZERO: Make sure the water used for the chemical zero is really oxygen-free (< 1 ppb). Press ENTER, the "CAL" message flashes and indicates the instrument is in calibrating mode. Wait for the current stabilisation (approximately 10 min.) and press OK to validate the calibration. The oxygen concentration value flashes during 3 seconds.The instrument displays zero.

SLOPE: Humidify the wadding of the calibration cap and take off the probe from the sample. Position the cap on the electrode and press ENTER. The probe should be positioned vertically with the membrane downwards (see page 7.1). The flashing "cal" message indicates that the instrument is in calibration mode. Wait for the current stabilisation (approximately 10 min.) and press OK to validate the calibration. The oxygen concentration value flashes during 3 seconds. The analyser displays the date of the last calibration and the new slope calculated. Modify the date if you wish. Put back the electrode in water.

PROGRAMMING

ZERO CALIB.

Select

EXECUTION

Enter

21.2 °ppm

25.0 °C 5.693 µA

OK

CAL

0 °ppm

25.0 °C 5.693 µA

OK

CAL

TYPE :

P = 760.0 mmHg Tamb = 20 °C

SLOPE CALIB.

Select

AIR

Enter

SLOPE

CONC. CALIB.

Select

ZERO

ZERO CALIB.

TYPE :

ZERO CALIB.

Select

EXECUTION

SLOPE CALIB.

Enter Enter

Chem.

PROGRAMMING

Select Select

PROGRAMMING

Enter

PROGRAMMING

SLOPE CALIB.

Select

EXECUTION

DATE : P : 1 nA/ppm

SLOPE CALIB.

Enter

01/01/98

Possibility to enter the date of the calibration

21.2 °ppm

25.0 °C 5.693 µA OK

CAL


6-6

6.2.3 Slope process calibration + electric zero

PROGRAMMING

ZERO: Choice of the electrical zero. The electrical zero is carried out automatically by the transmitter at a regular frequency. Choice of a process slope.

EXECUTION

SLOPE: The "CAL" message flashes and indicates the instrument is in calibrating mode. Wait for the current stabilisation and press OK. You have the possibility to adjust the concentration value digit by digit with the function key to the value obtained with your reference analysis method.

The analyser displays the date of the last calibration and the new slope calculated. Modify the date if you wish.

PROGRAMMING

SLOPE CALIB.

Select

EXECUTION

DATE : P : 1 nA/ppm

SLOPE CALIB.

Enter

01/01/98

Possibility to enter the calibration date

21.2 °ppm

25.0 °C 5.693 µA OK

CAL

TYPE :

SLOPE CALIB.

Select

PROCESS

Enter

SLOPE

CONC. CALIB.

Select

ZERO

ZERO CALIB.

TYPE :

ZERO CALIB.

Select

EXECUTION

SLOPE CALIB.

Enter Enter

AutoElec.

PROGRAMMING

Select Select

PROGRAMMING

Enter


6-7

6.2.4 Slope process calibration + chemical zero

PROGRAMMING

ZERO: Choice of the chemical zero Choice of the slope process

EXECUTION

ZERO: Make sure the water used for the chemical zero is really oxygen-free (< 1 ppb). Press ENTER, the "CAL" message flashes and indicates the instrument is in calibrating mode. Wait for the current stabilisation (approximately 10 min.) and press OK to validate the calibration. The oxygen concentration value flashes during 3 seconds.The instrument displays zero.

SLOPE: The flashing "cal" message indicates that the instrument is in calibration mode. Wait for the current stabilisation (approximately 10 min.) and press OK to validate the calibration. The oxygen concentration value flashes during 3 seconds. The analyser displays the date of the last calibration and the new slope calculated. Modify the date if you wish.

PROGRAMMING

ZERO CALIB.

Select

EXECUTION

Enter

21.2 °ppm

25.0 °C 5.693 µA

OK

CAL

0 °ppm

25.0 °C 5.693 µA

OK

CAL

PROGRAMMING

SLOPE CALIB.

Select

EXECUTION

DATE : P : 1 nA/ppm

SLOPE CALIB.

Enter

01/01/98

Possibility to enter the calibration date

21.2 °ppm

25.0 °C 5.693 µA OK

CAL

TYPE :

SLOPE CALIB.

Select

PROCESS

Enter

SLOPE

CONC. CALIB.

Select

ZERO

ZERO CALIB.

TYPE :

ZERO CALIB.

Select

EXECUTION

SLOPE CALIB.

Enter Enter

Chem.

PROGRAMMING

Select Select

PROGRAMMING

Enter


7-1

Chapter 7: Start up, maintenance and troubleshooting

7.1 Start up 7.1.1 Assembling the probe The probe is composed of the following items:

1 : Nut

2 : Measuring electrode

3 : Probe body

4 : Membrane

5 : Filling screw

6 : Gasket


7-2

Proceed as follows for the assembling:

A. Screw the membrane � on the body till the dead stop �. B. Fill in the probe body with 5 ml of electrolyte by means of the syringe. ð Check there is no impurity or bubble in the electrolyte. C. Insert the electrode � in the probe body until you meet a resistance. Do not force. D. Complete the mounting by tightening the nut. E. Mount the filling screw and its gasket. Tight it sufficiently to avoid any leaking of electrolyte or

external pollution from sample.


7-3

7.1.2 Probe connection See figure page 3-2 for the electrical connection. The standard length of the cable is 10 m. 7.1.3 Main power supply connection Install the ferrite on the mains supply cable as close as possible to the transmitter. Proceed to the connections according to the drawing page 3-2. 7.1.4 Starting up the analyser When switched on, the analyser operates an automatic test of its electronics and displays a first value. Wait till stabilization of the measurement (max. 30 mn). You should not calibrate the analyser before the temperature and the concentration are stable (See chapter 6). Note 1: There is electrolyte in the probe, keep it head down when you remove it from the water. Note 2: Never shake the probe during a calibration, it may provoke an introduction of oxygen

in the electrolyte and a temporary cell current increase.


7-4

7.2 Changing the membrane

Never take off the electrode before removing the electrolyte filling plug.

Never touch the membrane with the hands.

Never use a worn membrane.

� Turn off the water supply. Remove the connector from the probe.

� Unscrew the cell cap and remove the probe.


7-5

7.2.1 Dismounting the membrane

A. Unscrew cap and gasket. B. Unscrew nut. C. Remove electrode without scratching the cathode. D. Empty the electrolyte left in the probe. E. Unscrew the worn membrane.


7-6

7.2.2 Mounting the new membrane

F. Screw the new membrane on the body till the dead stop. G. Replenish the probe body with 5 ml of electrolyte. Check there is no impurity or bubble in the

electrolyte. H. Preposition the electrode without forcing. It should take its place by simple gravity. I. Screw the probe nut till the electrode meets a resistance. J. Put back the cap and gasket, screw the cap to ensure watertightness.


7-7

7.3 Oxygen electrode rejuvenation procedure After some months of operation (3 to 12 depending on sample oxygen concentration, plant shut-down frequency, ...), a dark AgBr coating may cover part of the silver anode. This coating does not affect the measurement until more than 90% of the surface is contaminated. When changing the electrolyte and membrane, visually check the silver anode. If more than 2/3 of the surface is covered then an electrode rejuvenation according the following procedure is needed: - soak the anode in 10 % ammonia for about 1 hour then rinse it with demineralised water and wipe

it with a soft cloth, - if the ammonia cleaning is not sufficient, rejuvenation of the silver electrode has to be done by re-

polishing softly (coating is a only few microns thick) the areas covered with silver bromide with soft abrasive (N° 400 to 600). After polishing, rinse the anode with demineralised water and wipe it with a soft cloth.

The cleaned electrode performs immediately as well as a new electrode. Obviously, as per any operation concerning a sensing element, recalibration is required.

7.4 Functional troubleshooting

Problem: Excessive time for stabilization or no stabilization during calibration in the air.

Causes and solutions: a) The sample temperature is further to the ambient temperature: 6°C (43°F) in water and

35°C (95°F) in the air so that the temperature drift provokes a reading drift ! Do not wait till the probe temperature meets the external temperature (use the

temperature compensation).

b) There is an electrolyte leak (through the membrane). The current is too high because of an excessive penetration of oxygen ! Change the membrane.

c) There is an important pollution of the electrolyte due to an incorrect adjustment of the filling

screw ! Change the electrolyte. Check there is a gasket and the screwing. Check the Teflon

band is correctly positioned. d) The electrode is not correctly mounted in the probe body: there is an important looseness

between the membrane and the golden cathode ! Tighten the electrode screw (rep 3 page 7-1).

e) The membrane holder is incorrectly screwed. Risk of electrolyte pollution

! Change the electrolyte and tighten correctly the membrane holder.


7-8

f) Lack of humidity because of an excessive temperature

! Use a calibration cap (see spare parts list) g) There is humidity or water in the probe connector

! You notice a high unstability. Dry the connector and check it is correctly screwed. h) The golden cathod surface is damaged (scratch or holes due to important shocks)

! Do not polish the surface. Change the electrode. i) Mud or particles on the golden cathod

! Clean the cathod with an absorbant soft tissue and rinse the membrane. j) The electrolyse potential does not equal - 0.85 V

! Enter the correct value k) Cable or connections damaged when the probe has been replaced

! Check the connexion to the transmitter. If the connexion is correct check the connections of the probe connector.

l) The probe is incorrectly positioned (see § 7.1.4 page 7-3 - note 1). The electrolyte leaks and air

bubbles input the cathod ! Put the probe in the correct position, head down.

Problem: No significant current increase when the probe is in the air for the calibration

Causes and solutions: a) There is an important pollution of the electrolyte due to an incorrect adjustment of the filling

screw ! Change the electrolyte. Check there is a gasket and the screwing. Check the

Teflon band is correctly positioned or that the probe is not damaged. b) The membrane holder is incorrectly screwed. Risk of electrolyte pollution

! Change the electrolyte and tighten correctly the membrane holder. c) The membrane has been torn

! Change the membrane. d) The electrode is not correctly mounted in the probe body: there is an important looseness

between the membrane and the golden cathode ! Tighten the electrode screw (rep 3 page 7-1).


7-9

e) Cable or connections damaged when the probe has been replaced

! Check the connection to the transmitter. If the connection is correct check the connections of the probe connector (See appendix 4 for the connector connections).

f) The membrane is worn

! Change the membrane. g) There is a AgBr (dark green) deposit on the silver

! Polish the silver tube with soft abrasive (N° 400 to 600)

Problem: Important instability in measuring mode

Causes and solutions: a) There is humidity or water in the probe connector

! Dry the connector and check it is correctly screwed. b) Incorrect connexion

! Check the connections of the transmitter to the probe. c) There are bubbles close to the cathod

! Replenish the electrolyte holder and check there is no bubble between the cathod and the membrane.

d) The probe is violently shaked

! Check the fixation and the stability. e) Important electromagnetic interferences close to the probe or transmitter cable

! Find a better place for the cable and check the EMC level. f) Temporary interference with other gas

! Mainly with H2S g) Flowrate too weak (50 ml/h minimum)

! Change the probe location h) Mud from an heterogen sample damages the membrane

! Install a deflector or change the probe location

Problem: Lack of accuracy

Causes and solutions: a) The membrane permeability has changed (dirt deposit)

! Calibrate the analyser and check if the concentration is back to normal.


7-10

b) Pollution of the electrolyte

! Check the parts to screw (membrane, filling screw) and change the electrolyte. c) Leak of electrolyte

! Check the parts to screw (membrane, filling screw) and change the electrolyte. d) Interferences, mainly with H2S

! If the level of H2S (or other pollutant) is stable, take into account its concentration to determine the O2 concentation.

e) Error during calibration or incorrect calibration

! Calibrate again to check the parameters. If the error is confirmed, check the calibration current (too high, too low or unstable) and the concentration in the air. Refer to the problems described above.

f) The temperature calibration has not been done

! Check the temperature given by the transmitter and calibrate it (see page 6-2). If you have chosen the manual compensation check the value is correct.

g) There are bubbles close to the cathod

! Replenish the electrolyte holder and check there is no bubble at the bottom. h) Flowrate too low (4 l/h minimum)

! Increase the flowrate. i) The sample temperature or pressure is out of the specifications

! Change the probe location or modify the sample so that it meets the specifications. j) Mud or particles on the golden cathod

! Clean the golden cathod with an absorbant tissue and rinse the membrane. k) The electrolyse potential is not equal to -0.85 V

! Enter the correct value.

Other problems

a) The probe current is null

! There is no electrolyte in the probe (leak). b) The probe current is negative

! Connexion problem to the anode circuit (loose contact). ! AgBr deposit on the anode

c) The sample temperature corresponds to the specifications but there is an error on the

temperature ! There may be a short-circuit on the temperature connection.


7-11

7.5 Electrical troubleshooting

WARNING!

Never attempt servicing before disconnecting the instrument from the main power line

MALFUNCTION POSSIBLE CAUSE REMEDIES

No power; instrument is not connected correctly

Check for power, then check if connected properly

Defective fuse Check fuse

Instrument's power supply set for wrong line voltage

Check jumpers on power-supply board for correct voltage settings

Ribbon cable connecting power with CPU board not properly plugged in

Check that the ribbon plugs are properly plugged in

Connection between CPU board and measurement module loose

Check plug connections

Short circuit in power-supply board

Visually check power-supply board for shorts

No indication

Hardware is defective Call the Service Technician

LCD displays undefined characters

Malfunctioning CPU board or processor

Using the Instruction manual, program the instrument to load the default values

CPU hardware RESET the instrument by temporarily interrupting the power (5-10 secs.)

Call the Service Technician

Keyboard does not operate; all keys are inactive

CPU malfunctioning, external interferences

If there is no response, RESET the instrument by temporarily interrupting the power (5-10 seconds) Check each key again. If there is no change, call the Service Technician


7-12


Measurement is not correct

Instrument was programmed incorrectly

Recheck programmed parameters. Do they agree with the probe's characteristics?

System, including probe, not calibrated correctly

Calibrate the whole system (probe connected)

Probe connected wrong Recheck all probe connections

Probe malfunctioning, possibly incompatible with the application

Visually check the condition of the probe. Is the application within the probe's specifications (data sheet)?

CPU board is defective If error persists, call the Service Technician

Measurement is not stable

Faulty probe Check the condition of the probe. Is it contaminated?

Probe connected wrong Is the probe connected

correctly?

Interferences Are there any sources of potential interference, chemical, external, temperature, pressure, ...?

Cable shield is not connected Check and connect

Defective CPU board If problem persists, call the Service Technician

Probe connected wrong Is the probe properly connected? Check

Temperature measurement is not correct

Temperature was not calibrated

Calibrate for temperature. Also check the Pt100 for correct resistance (ohmmeter)

CPU board is defective If problem persists, call the Service Technician


7-13


Check to make sure that probe is connected correctly

Initiate a software RESET

If steps 1-3 do not remedy the problem, make a cold start (RESET): interrupt the power for 5-10 secs

Reprogram the instrument again

Display reading static; cannot be changed in any way

Malfunctioning CPU board and/or some other transmitter hardware is defective

If problem persists, call the Service Technician

Relays not energised Instrument was programmed incorrectly

Check whether the correct relay parameters and setpoints have been programmed

Hardware is defective Check that the programmed setpoints are compatible with the programmed measuring range

Check the relay characteristics for proper functioning using an ohmmeter

If problem persists, contact the Service Technician

Instrument was incorrectly programmed

Check the programmed output-current parameters

Connection of the Monec with peripherals (recorder, etc.) are faulty, loose or defective

Check the cables

Compare the measured value with the output current range

Wrong output current, output current remains at 0 or 20 mA

Hardware is defective

If problem persists, call the Service Technician

Wrong configuration (3 electrode mode)

Check the swiches under the amperometric board are correctly positioned ("on")

Polarization voltage incorrect

Wrong programming


8-1

Chapter 8: Error messages Λ In case of errors, measurements are replaced by dashes " - - -".

Error messages Description

Error messages during a measurement

CONCENTRATION TOO HIGH

The concentration value is out of the limits. Check the current value and the calibration parameters.

STAND-BY 1.99 ppb

Electrode protection In case of measuring range exceeding "concentration too hugh" over 2 minutes, the error message "STAND-BY" appears. From this moment on, the electrode polarization voltage is switched off during 10 minutes. After these 10 minutes, the voltage is switched on. In STAND-BY the user may switch on the voltage at any time by pressing ENTER.

CONCENTRATION TOO LOW

The concentration value is out of the limits. Check the current value and the calibration parameters.

TEMPERATURE ERROR

The sample temperature is out of the limits. Check the cable polarity. Check if there is any short-circuit or open circuit.


8-2

CURRENT TOO LOW

The current value is out of the limits. Check the electrode (electrolyte and membrane).

CURRENT TOO HIGH

The current value is out of the limits. Check there is no short-circuit on the measuring line. Check the polarization voltage.

Error messages during a calibration

∆T OUT OF LIMITS

21.6°C

The temperature difference between the calibration and the sensor theorical response is superior to the programmed limit. Limits: ± 20°C


A2-1

Appendix 1: Pressure conversion table

hPa or mbars

mm Hg

mm H2O

psi

inches Hg

inches H2O

920.00

690

9503.60

13.34

27.16

374.16

925.00

693.8

9555.25

13.42

27.31

376.19

930.00

697.5

9606.90

13.49

27.46

378.22

935.00

701.3

9658.55

13.56

27.61

380.26

940.00

705

9710.20

13.63

27.76

382.29

945.00

708.8

9761.85

13.71

27.90

384.32

950.00

712.5

9813.50

13.78

28.05

386.36

955.00

716.3

9865.15

13.85

28.20

388.39

960.00

720

9916.80

13.92

28.35

390.43

965.00

723.8

9968.45

14.00

28.50

392.46

970.00

727.5

10020.10

14.07

28.64

394.49

975.00

731.3

10071.75

11.14

28.79

396.53

980.00

735

10123.40

14.21

28.93

398.56

985.00

738.8

10175.05

14.29

29.08

400.59

990.00

742.5

10226.70

14.36

29.23

402.63

995.00

746.3

10278.35

14.43

29.38

404.66

1000.00

750

10330.00

14.50

29.53

406.69

1005.00

753.8

10381.65

14.58

29.68

408.73

1010.00

757.5

10433.30

14.65

29.82

410.76

1015.00

761.3

10484.95

14.72

29.97

412.79

1020.00

765

10536.60

14.79

30.12

414.83

1025.00

768.8

10588.25

14.87

30.27

416.86

1030.00

772.5

10639.90

14.94

30.42

418.89


A2-1

Appendix 2: Temperature conversion table

3 Conversion from °C into °F: °F = 1,8 × °C + 32 3 Conversion from °C into °K: °K = °C + 273,15

°C °F °K °C °F °K

0 32 273,15 24 75,2 297,15

1 33,8 274,15 25 77 298,15

2 35,6 275,15 26 78,8 299,15

3 37,4 276,15 27 80,6 300,15

4 39,2 277,15 28 82,4 301,15

5 41 278,15 29 84,2 302,15

6 42,8 279,15 30 86 303,15

7 44,6 280,15 31 87,8 304,15

8 46,4 281,15 32 89,6 305,15

9 48,2 282,15 33 91,4 306,15

10 50 283,15 34 93,2 307,15

11 51,8 284,15 35 95 308,15

12 53,6 285,15 36 96,8 309,15

13 55,4 286,15 37 98,6 310,15

14 57,2 287,15 38 100,4 311,15

15 59 288,15 39 102,2 312,15

16 60,8 289,15 40 104 313,15

17 62,6 290,15 41 105,8 314,15

18 64,4 291,15 42 107,6 315,15

19 66,2 292,15 43 109,4 316,15

20 68 293,15 44 111,2 317,15

21 69,8 294,15 45 113 318,15

22 71,6 295,15

23 73,4 296,15


A3-1

Appendix 3: Default values

CALIBRATION

CONC. CALIB. OFFSET Type : AutoElec SLOPE Type : Air P : 760 mmHg Tamb. : 20.0 °C

PARAMETERS DATE : 01/01/98 S : 1.000 µA/ppm ∆T : 0.0 °C

PROGRAMMING

MEASURE

TEMP. COMP. TYPE : Auto SENSOR : NTC

ALARMS

ALARMS S1/S2/S4 AFFECT. : Conc. LIM. : 0.00 ppb DIR. : Low DELAY : 000 s HYST. : 00% RELAY : NO

ALARM S3 AFFECT. : System ACQUIT : Auto RELAY : NC

mA OUTPUTS

OUTPUT 1 AFFECT. : Conc. TYPE : 4-20 MODE : Lin. LOW : 0.000 ppm UP : 1.000 ppm

OUTPUT 2 AFFECT. : Conc. TYPE : 4-20 MODE : Lin. LOW : 0.000 ppm UP : 1.000 ppm


A3-2

SPECIAL PROG.

MAINTENANCE MODE : Last

TIMER MODE : Last

CALIBRATION MODE : Last

ALARM SYSTEM MODE : Last

RS485

N° : 0 BAUD : 9600 PARITY : No STOP BIT : 1

SERVICE

AVERAGE

AVERAGE : 1

DISPLAY

DISPLAY CONC. : ppb/ppm TEMP. : °C PRESSURE : mmHg LANGUAGE : GB

CODE

CODE CALIB. : 0000 PROG. : 0000 SERVICE : 0000

CONFIGURATION

CONFIGURATION FREQ. : 50 Hz


A4-1

Appendix 4: Detailed cable connections

INTERNAL VIEW OF CONNECTOR

Rep. Colour Function Rep. connector

1 Black T + 1

2 Blue T - 2

3 White Work 3

4 Red Counter 4

5 White GND

6 White Earth


A5-1

Appendix 5: Security data sheet

Potassium hydroxide pellets

PHYSICAL AND CHEMICAL PROPERTIES

Solid

Melting point 361 °C

Vapor pressure IMM 719 C

Specific gravity 2.044

LABEL PRECAUTIONARY STATEMENTS

Corrosive. Causes burns. Harmful by inhalation, in contact with skin and if swallowed. Reacts violently with water. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. take off immediately all contaminated clothing. Wear suitable protective clothing, gloves and eye/face protection.

STABILITY AND REACTIVITY

Stability stable

Incompatibilities acids, aluminium, halogens, nitro compounds, organic materials, acid chlorides, acid anhydrides, magnesium, copper, tin, zinc.

Do not heat above melting point. Protect from moisture. Absorbs CO2 from air.

Reacts violently with: water, generates flammable and/or explosive hydrogen gas in contact with: metals.

Hazardous combustion or decomposition products: hydrogen gas.


A5-2

FIRST AID MEASURES

In case of contact, immediately flush eyes or skin with copious amounts of water for at least 15 minutes while removing contaminated clothing and shoes. Assure adequate flushing of the eyes by separating the eyelids with fingers. If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult give oxygen. If swallowed, wash out mouth with water provided person is conscious. Call a physician immediately. Discard contaminated clothing and shoes.

FIRE FIGHTING MEASURES

Non combustible. Use extinguishing media appropriate to surrounding fire conditions. Do not use water. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes. Reacts violently with water. Emits toxic fumes under fire conditions.

ACCIDENTAL RELEASE MEASURES

Evacuate area. Wear self-contained breathing apparatus, rubber boots and heavy rubber gloves. Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.

HANDLING AND STORAGE

Danger: under fire conditions material will melt and flow. Molten material reacts violently with water and can react with aluminium, tin, zinc and their alloys to generate flammable and explosive hydrogen gas. Potassium hydroxide reacts with trichloroethylene to form spontaneously flammable dichloroacetylene.

EXPOSURE CONTROLS/PERSONAL PROTECTION

Wear appropriate NIOSH/MSHA-approved respirator, chemical-resistant gloves, safety goggles, other protective clothing. Safety shower and eye bath. Use only in a chemical fume hood. Faceshield (8-inch minimum). Do not breathe dust. Do not get in eyes, on skin, on clothing. Avoid prolonged or repeated exposure. Wash thoroughly after handling. Corrosive. Toxic. Keep tightly closed. Do not allow contact with water. Store in a cool dry place.

TOXICOLOGICAL INFORMATION

Acute effects: harmful if swallowed, inhaled or absorbed through skin. Material is extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes and skin. Inhalation may be fatal as a result of spasm, inflammation and edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting.

DISPOSAL CONSIDERATIONS

Contact a licensed professional waste disposal service to dispose of this material.

The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide.


A5-3

Potassium bromide

PHYSICAL AND CHEMICAL PROPERTIES

White crystals

Melting point 770 °C

Specific gravity 1.984

LABEL PRECAUTIONARY STATEMENTS

Harmful. Harmful by inhalation, in contact with skin and if swallowed. Irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing.

STABILITY AND REACTIVITY

Incompatibilities Strong oxidizing agents Strong acids Hazardous combustion or decomposition products: hydrogen chloride gas.

FIRST AID MEASURES

In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes. In case of contact, immediately wash skin with soap and copious amounts of water. If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen. If swallowed, wash out mouth with water provided person is conscious. Call a physician. Wash contaminated clothing before reuse.

FIRE FIGHTING MEASURES

Extinguishing media Water spray.

Special firefighting procedures Wear self-contained breathing apparatus and protective clothing to unusual fire and explosions hazards.

Unusual fire and explosions hazards Emits toxic fumes under fire conditions.

ACCIDENTAL RELEASE MEASURES

Wear self-contained breathing apparatus, rubber boots and heavy rubber gloves. Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.


A5-4

PROCEDURES FOR CHECKING WORKER EXPOSURE

Chemical safety goggles, rubber gloves, respirator mask approved by NIOSH/MSHA, safety showers and eye fountains, mechanical exhaust required. Avoid any contact and inhalation. Avoid any contact with the eyes, the skin and clothing.

Wash well after handling. Noxious irritant solid. Keep the recipient tightly closed. Water absorbent. Store in a cool dry place.

TOXICOLOGICAL INFORMATION

Acute effects: harmful if swallowed, inhaled or absorbed through skin. Causes eye and skin irritation. Material is irritating to mucous membranes and upper respiratory tract. To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. Ingestion of large quantities can cause weakness, gastrointestinal irritation and circulatory disturbances.

DISPOSAL CONSIDERATIONS

For small quantities: cautiously add to a large stirred excess of water. Adjust the pH to neutral, separate any insoluble solids or liquids and package them for hazardous-waste disposal. Flush the aqueous solution down the drain with plenty of water. The hydrolysis and neutralization reactions may generate heat and fumes which can be controlled by the rate of addition. Observe all federal, state and local environmental regulations.

The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide.


A6-1

Appendix 6: Spare parts list

Any other spare parts except those below in the table should be replaced in the instrument.

Description Part number

RS485 board + manual 09125=A=2485

Box of 4 pre-mounted membranes for 9182 and 9185 sensors 09185=A=3500

Reference electrolyte 100 ml 363144,00100

Oxygen electrode without probe body ppb 09182=A=1000

Calibration cap 09182=A=1200

Eprom for 9180 Oxygen 09180=A=6201

Connection cable 10 m 09078=A=3010

Probe body oxygen ppb 09078=C=1010

Electrolyte filling screw 09078=C=1020

Electrolyte filling washer 09078=C=1030

Stainless steel flow cell 09078=A=2000

Syringe 460150,21951

CPU board 09125=A=1001

Power supply 09125=A=2000

Analog PC board for 9180 09180=A=1500

Display board 09125=A=1010

Monec D 9180 (standard) with software 09180=A=0300

Monec D 9180 (RS485) with software 09180=A=0311

9182 Instruction manual in English 621=191=082

9182 Instruction manual in French 621=091=082

9182 Instruction manual in German 621=291=082

9182 Instruction manual in Italian 621=491=082

9182 Instruction manual in Spanish 621=591=082


A7-1

Appendix 7: RS485 MODBUS-JBUS addressing

CALIBRATION menu /CONC. CALIB. /ZERO /PROGRAMMING /Type /EXECUTION /SLOPE /PROGRAMMING /Type /P /Tamb /EXECUTION /TEMP. CALIB. /EXECUTION /PARAMETERS

(0: ElecAuto, 1:Chemical) (0:Process, 1:Air)

0121 0221 0222 0223

MEASURE menu

/MEASURE /TEMP.COMP. /Type /Temp.

(0:Manual, 1:Auto)

1220 1230

ALARMS menu

/ALARM1 /Affect /Lim. /Dir. /Delay /Hyst. /Relay

(0:conc, 1:°C/°F, 2:No) (0:Low, 1:Up) (0:N.O., 1:N.C.)

2120 2130 2140 2150 2160 2170

/ALARM2 /Affect /Lim. /Dir. /Delay /Hyst. /Relay

(0:conc, 1:°C/°F, 2:No) (0:Low, 1:Up) (0:N.O., 1:N.C.)

2220 2230 2240 2250 2260 2270


A7-2

/ALARM3 /Mode /Affect /Lim. /Dir. /Delay /Hyst. /Relay /Accept

(0:Limit, 1:Syst, 2:No) (0:conc, 1:°C/°F, 2:No) (0:Low, 1:Up) (0:N.O., 1:N.C.)

2310 2320 2330 2340 2350 2360 2370 2380

/ALARM4 /Mode /Affect /Lim. /Dir. /Delay /Hyst. /Relay /Interv /Impul. /Ton /Toff /TmA

(0:Manu, 1:Auto) (0:Limit, 1:Timer, 2:No) (0:conc, 1:°C/°F, 2:Non) (0:Low, 1:Up) (0;N.O., 1:N.C.)

2410 2420 2430 2440 2450 2460 2470 2401 2402 2403 2404 2405

mA OUTPUTS menu

/OUTPUT1 /Affect /Type /Mode /Low /Mid. /Upp.

(0:µA, 1:°C/°F, 2:conc) (0:0/20mA, 1:4/20mA) (0:lin, 1:dual)

4110 4120 4150 4130 4160 4140

/OUTPUT2 /Affect /Type /Mode /Low /Mid. /Upp.

(0:µA, 1:°C/°F, 2:conc) (0:0/20mA, 1:4/20mA) (0:lin, 1:dual)

4210 4220 4250 4230 4260 4240


A7-3

/SPECIAL PROG. /MAINTENANCE /Mode /Value /CALIBRATION /Mode /Value /SYST. ALARM /Mode /Value /TIMER /Mode /Value /TEST

(0:Live, 1:Last, 2:Preset) (0:Live, 1:Last, 2:Preset) (0:Live, 1:Last, 2:Preset) (0:Live, 1:Last, 2:Preset)

4311 4312 4321 4322 4331 4332 4341 4342

RS485 menu

/N° /Baud /Parity /Stop bit

(0:300, 1:600, 2:1200, 3:2400, 4:4800, 5:9600) (0:No, 1:Odd, 2:Even) (0:1bit, 2:2bits)

5100 5200 5300 5400

SERVICE menu

/AVERAGE /Average /TEST /DISPLAY /Conc. /Temp /Pressure /Language /CODE /Calib. /Program /Service /SOFT ISSUE /DEFAULT VAL. /ADJUST mA /OUTPUT1 /OUTPUT2 /CONFIGURATION /Freq

(0:0,...10:10) (0:ppb-ppm, 1:µg-mg/l) (0:°C, 1:°F) (0:mmHg, 1:mbar, 2:inHg) (0;F, 1:GB, 2:D, 3:Sp, 4:I) (0:60HZ, 1:50Hz)

7210 7360 7320 7370 7330 7410 7420 7430 7810

Values measured: Adr 0000: concentration value Adr 0002: temperature value Adr 0004: current value Adr 0006: auxiliary value measured


A7-4

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