LRG 16-40LRG 17-40Installation Instructions 818524-01Conductivity Electrode LRG 6-40Conductivity Electrode LRG 7-40

GESTRA Steam Systems

GESTRA

Contents

Usage for the intended purpose ..............................................................................................................4Safety note .............................................................................................................................................4Danger ...................................................................................................................................................4PED (Pressure Equipment Directive) ........................................................................................................4ATEX (Atmosphère Explosible) .................................................................................................................4

Important NotesPage

Explanatory Notes

Scope of supply ......................................................................................................................................5Description .............................................................................................................................................5Function ............................................................................................................................................. 5, 6System components ...............................................................................................................................6Design ....................................................................................................................................................6

Example of Installation

Conductivity metering ...........................................................................................................................8Conductivity metering and continuous boiler blowdown .................................................................. 8, 9Key .......................................................................................................................................................9

LRG 6-40, LRG 7-40 .....................................................................................................................7 – 9Corrosion resistance ...............................................................................................................................9Sizing .....................................................................................................................................................9Name plate / marking ...........................................................................................................................0Dimensions LRG 6-40 ........................................................................................................................Dimensions LRG 7-40 ........................................................................................................................Key .......................................................................................................................................................4

Technical Data

Installation notes ..................................................................................................................................5Mounting conductivity electrode ...........................................................................................................5Terminal box .........................................................................................................................................6Opening terminal box ............................................................................................................................6Aligning terminal box ............................................................................................................................6Removing terminal box .........................................................................................................................6Mounting terminal box ..........................................................................................................................7Closing terminal box .............................................................................................................................7Tools ....................................................................................................................................................7

Installation

LRG 6-40 / LRG 7-40 ........................................................................................................................3Key .......................................................................................................................................................4

Functional Elements

3

Start .....................................................................................................................................................3

Operation

Check wiring ........................................................................................................................................3Apply mains voltage..............................................................................................................................3Setting parameters ...............................................................................................................................3

Contents – continued –

Commissioning

CAN bus ...............................................................................................................................................9Factory set node IDs .............................................................................................................................9Node ID ................................................................................................................................................9Establishing / changing node ID ............................................................................................................30Attention ...............................................................................................................................................30Table “Node ID” ....................................................................................................................................3Declaration of conformity ......................................................................................................................3

Annex

Causes .................................................................................................................................................4Note .....................................................................................................................................................4Systematic malfunction analysis ...........................................................................................................5

System Malfunctions

Fault finding list for troubleshooting ................................................................................................ 6, 7Cleaning measuring electrode ..............................................................................................................7Replacing electronic circuit board .........................................................................................................7Note .....................................................................................................................................................7

Malfunctions

Factory settings ....................................................................................................................................

Basic Settings

Wiring

Bus cable .............................................................................................................................................0Note .....................................................................................................................................................0Assigning the connector and jack .........................................................................................................0Wiring diagram of conductivity electrode LRG 6-40, LRG 7-40 .................................................... , Attention ...............................................................................................................................................

Page

Replacing conductivity electrode ...........................................................................................................8Danger / Attention .................................................................................................................................8Disposal................................................................................................................................................8

Decommissioning

4

Important Notes

Danger

When loosening the electrode steam or hot water might escape. This presents the danger of severe scalding. It is therefore essential not to remove or install the electrode unless the boiler pressure is verified to be zero.The electrode is hot during operation. This presents the danger of severe burns to hands and arms. Installation and maintenance work should only be carried out when the system is cold.

Usage for the intended purpose

Use conductivity electrodes LRG 6-40/LRG 7-40 only for measuring the electrical conductivity of liquid fluids.For conductivity limiting or continuous boiler blowdown the conductivity electrodes LRG 6-40/ LRG 7-40 must only be used in conjunction with TDS controller LRR -40 and an operating terminal & display unit type URB or SPECTORcontrol.To guarantee a trouble-free operation observe the requirements made on water quality as specified in the pertinent TRD and EN regulations.

Safety note

The equipment must only be installed and commissioned by qualified staff.Maintenance and service work must only be performed by adequately trained persons who have a recognized level of competence.

PED (Pressure Equipment Directive)

ATEX (Atmosphère Explosible)

According to the European Directive 94/9/EC the equipment must not be used in explosion-risk areas.

The equipment fulfills the requirements of the Pressure Equipment Directive (PED) 97/3/EC. Applicable in fluids of group and . With CE marking (apart from equipment according to section 3.3).

5

Explanatory Notes

Scope of supply

LRG 16-40 Level electrode type LRG 6-40 S. S. joint ring ∅ 33 x 39, form D, DIN 7603 (made of .430), bright annealed Terminating resistor 0 Ω Installation manual

LRG 17-40 Level electrode type LRG 7-40 S. S. joint ring ∅ 33 x 39, form D, DIN 7603 (made of .430), bright annealed Terminating resistor 0 Ω Installation manual

Description

The conductivity electrode LRG x-40 consists of a TDS (= Total Dissolved Solids) monitoring electrode for conductivity measurement, a temperature sensor for detecting the fluid temperature and a conduc-tivity transmitter that is fully integrated in the terminal box.The equipment is of the two electrode type and works according to the conductometric measurement principle, measuring the electrical conductivity of electrically conductive fluids.Together with the TDS controller LRR -40 and an operating device type URB or SPECTORcontrol the conductivity electrode LRG x-40 can be used as conductivity limiter and continuous blowdown controller in steam boilers and (pressurized) hot water plants.The data exchange between the conductivity electrode LRG x-40, the control and operating equip-ment and other devices is effected by the CAN-Bus to ISO 898, using the CANopen protocols.

Function

A measuring current of variable frequency flows through the fluid and creates a potential gradient between the measuring electrode and the measuring tube. The potential gradient is evaluated as measuring voltage UU.The electrical conductivity is a function of temperature. To relate the measured values to a reference temperature the resistance thermometer integrated in the electrode measures the fluid temperature.The electrical conductivity is calculated from the measuring voltages UU and UI and – through temperature compensation – is based on a reference temperature of 5°C.The electrical conductivity is a non-linear function of temperature. For the compensation of the measured values one of the following three procedures can be applied:n Temperature compensation Auto: The conductivity electrode records the specific conductivity/

temperature curve of the respective fluid and based on the data obtained, performs the compen-sation.

The auto-curve temperature compensation is suitable for boilers operating with variable pressure, which means that the boiler does not have a fixed working pressure (e. g. low load 0 bar, full load 5 bar). The system detects in steps of 0°C all temperatures and conductivity values from 00°C to the service temperature. For this purpose the boiler must reach its working pressure (with variable pressure operation: max. allowable working pressure). If the standard curve is not suitable for variable pressure operation, use can be made of the recorded curve.

6

Explanatory Notes – continued –

Function – continued –

n Temperature compensation NORM: The conductivity/temperature curves of normally used conditioning agents are stored in the electrode and can be selected.

The standard curve temperature compensation is suitable for boilers operating with variable pressure, which means that the boiler does not have a fixed working pressure (e.g. low load 0 bar, full load 5 bar). The standard curves of feedwater conditioning agents with different basic conductivities com-pensate for the influence of the temperature on readings within the operating range.n Temperature compensation LINEAR: A fixed temperature coefficient (Tk) is used to correct the

measured conductivity value linearly.The gradient (default setting: . % / °C) is normally used for steam boilers operating with constant pressure. The conductivity is ascertained at an ambient temperature of 5°C. The cell constant can be modified in order to calibrate the value measured by the electrode. The gradient can be verified at operating pressure with the aid of a calibrated conductivity meter.At regular intervals the conductivity electrode LRG x-40 sends a data telegram via CAN-bus to the controller with the following information:n Measured conductivity value, referred to 5°C as actual value (X),n Measuring range / adaptation of actual value output,n Alarm: self-monitoring of electrode supply cables,n Alarm: temperature sensor defective,n Alarm: excessively high temperature in terminal box.A short circuit in the cables leading to the measuring electrode, the measuring tube and the resistance thermometer or the interruption of the data transmission via CAN bus will be indicated by a malfunc-tion message.A sensor monitors the temperature in the terminal box and indicates a malfunction if the limit value is exceeded.

System components

Design

LRG 1x-40 Screwed ", ISO 8-. Fig. 3, Fig. 4

LRR 1-40 Digital switching controller for conductivity electrode LRG x-40 Functions: Conductivity limiter, continuous blowdown controller Data exchange via CAN bus to ISO 898 using CANopen protocolURB 1, URB 2 Operating & display unitFunctions: Parameterization, indication via LCD displayData exchange via CAN bus to ISO 898 using CANopen protocol

7

LRG 16-40, LRG 17-40

Type approval no.TÜV.WÜL.0-007 EG BAF-MUC 0 05 0388 003

Service pressure LRG 6-40: 3 bar at 38°C LRG 7-40: 60 bar at 75°C

Connection Screwed " BSP (to ISO 8-)

Materials Screw-in enclosure: .457, X6CrNiMoTi7-- Measuring electrode/reference tube/screw: .457, X6CrNiMoTi7-- Electrode insulation: PTFE Terminal box: 3.6 G AlSi8Cu3 Spacer disc: LRG 6-40: PEEK Spacer disc: LRG 7-40: PEEK HT

Length of installation / measuring length 00, 300, 400, 500, 600, 800 and 000 mm

Temperature sensor Resistance thermometer PT 000

Cell constant C 0. cm-

Conductivity measuring range 0.5 – 000 μS/cm at 5°C 0.5 – 6000 ppm (parts per million)

Technical Data

Note

The electrical conductivity is measured in μS/cm. For ppm (parts per million) use the following conversion: μS/cm = 0.5 ppm.

8

LRG 16-40, LRG 17-40 – continued –

Measuring cycle sec.

Accuracy 5 %, referred to conductivity readings without temperature compensation

Temperature compensation Type of temp. compensation can be adjusted with URB or SPECTORcontrol :

n Temperature compensation AUTO: with conductivity/temperature curve characteristic of the installation.

n Temperature compensation NORM: with standard conductivity/temperature curve.

n Temperature compensation LINEAR: with set temperature coefficient (Tk).

Time constant T (measured as specified in DIN 3440) Temperature: 9 sec. Conductivity: 4 sec.

Input/Output CAN bus interface with power supply 8 – 36 V DC, short circuit protected

Data exchange CAN-bus to ISO 898, CANopen protocol

Power consumption 3.8 W

Fuse Electronic thermal fuse Tmax 85°C, hysteresis -K.

Indicators and adjustors Two LEDs for internal status messages. One 0-pole code switch for node-ID and baud rate settings.

Electric connection M sensor connector, 5 poles, A coded M sensor jack, 5 poles, A coded

Protection IP 65 to EN 6059

Ambient temperature Max. 70°C

Weight Approx. .5 kg

Technical Data – continued –

9

LRG 16-40, LRG 17-40 – continued –

The standard conductivity-/temperature curves can be adjusted using the operating & display devices SPECTORcontrol and URB.

Standard curve Conditioning agent Basic conductivity at 25°C

1 NaOH (caustic soda) 60 μS/cm

2 NaOH (caustic soda) 080 μS/cm

3 NaOH (caustic soda) 5400 μS/cm

4 NaOH (caustic soda) 000 μS/cm

5 Na3PO4 (trisodiumphosphate) 90 μS/cm

6 Na3PO4 (trisodiumphosphate) 00 μS/cm

7 Na3PO4 (trisodiumphosphate) 5900 μS/cm

8 Na3PO4 (trisodiumphosphate) 00 μS/cm

9 NaSO3 (sodium sulfite) 980 μS/cm

10 Dipolique 444 00 μS/cm

11 Levoxin 95 μS/cm

Technical Data – continued –

Corrosion resistance

Sizing

The electrode body must not be subjected to sharp increases/decreases in pressure. The dimensional allowances for corrosion reflect the latest state of technology.

If the conductivity electrode LRG x-40 is used for its intended purpose, its safety is not impaired by corrosion.

0

Name plate / Marking

Technical Data – continued –

Fig. 1

Safety note

Fig. 2

Equipment designation

Pressure rating, thread type, material number, protection

Pressure/temperature rating

Measuring range

Power rating

Output characteristics

Node ID

CE marking

Manufacturer / Disposal note

Spare part specification

Technical Data – continued –

Dimensions LRG 16-40

73

Fig. 3

b = 68

40

336

0

" BSP (ISO 8-)

A. F. 4

∅ 8

∅ 40" BSP (ISO 8-)

Ra 3.0.5

Ra

.5

A

B

C

D

E

FG

G [mm]

00

300

400

500

600

800

000

Technical Data – continued –

Dimensions LRG 17-40

73

Fig. 4

b = 68

40

336

0

" BSP (ISO 8-)

A. F. 4

∅ 8

∅ 40" BSP (ISO 8-)

Ra 3.0.5

Ra

.5

A

B

C

D

E

FG

G [mm]

00

300

400

500

600

800

000

3

123456PT1000

Schaltwippe weiß

IP 65

MAX 70°C

MAX 95%

Fig. 5

Functional Elements

LRG 16-40 / LRG 17-40

H I

N

M

L

K

J

Fig. 6

321

OCode switch, white

4

1 LED (green)

2 LED (red)

3 Code switch

A M sensor connector, 5 poles, A coded

B M sensor jack, 5 poles, A coded

C Thermal insulation

D Seating surface

E Joint ring ∅ 33 x 39, form D, DIN 7603, material: .430, bright-annealed

F Measuring tube

G Length of installation and measuring length

H Cover screws (cross recess head screws M4)

I Cover

J Terminal strip

K Fixing screws for electronic circuit board

L Connection for functional earth

M Joint ring

N Fixing nut for terminal box

O Terminal lugs for electrode wires, functional earth

Key

Technical Data / Functional Elements – continued –

5

Installation

Mounting conductivity electrode

. Check seating surfaces of threads or mounting flange provided on vessel or boiler standpipe (see Fig. 3 and Fig. 4). If necessary rework the surfaces according to the specifications indicated in the drawing.

. Place joint ring E onto the seating surface D of the conductivity electrode.3. Apply a light smear of silicone grease to the electrode thread.4. Screw conductivity electrode into thread or flange provided on vessel or boiler standpipe

(see page ) and tighten with an open-end spanner A. F. 4 mm. The torque required when cold is 50 Nm.

Installation notes

Attention

n The seating surfaces and threads on the vessel and mounting flange must be accurately machined.

n Use only the supplied ring joint ∅ 33 x 39, form D, to DIN 7603, material: .430, bright-annealed!

n Do not insulate the threads with hemp or PTFE tape!n Do not lag the electrode body.n Install electrode horizontally or with a vertical inclination. The measuring surface must

be permanently submerged.n Provide a spacing of approx. 30 mm between the lower end of the measuring tube

and the boiler wall, the smoke tubes and any other metallic fittings as well as the low water level.

n The specified torques must be strictly observed.

Note

n For the approval of the boiler standpipe the relevant local and national regulations must be observed.

n Three examples of installation are shown on pages 8 and 9.

6

Installation – continued –

Opening terminal box

. Undo cover screws H and remove terminal cover I. The arrow on the name plate points towards the cover to be removed.

Terminal box

Note

When the terminal box is open it can be aligned, removed and mounted, the terminal strips can be wired, and – if necessary – the baud rate and node-ID settings can be changed all in a single operation.

Aligning terminal box

Terminal box open:. Use open-end spanner A. F. 9 to loosen the fixing nut N and turn the terminal box in the desired

direction (cable gland!).. Re-tighten the fixing nut N with a torque of 5 Nm.If necessary you can take off the terminal box in order to align the electrode part. The terminal box must be re-installed after alignment.

Removing terminal box

Terminal box open:. Unplug the electrode wires from terminal lugs for electronic circuit board O, functional earth L.. Use open-end spanner A. F. 9 to unscrew the fixing nut N. Pull electrode wires through fixing nut N.

3. Remove terminal box. Run all electrode wires through the hole for the fixing screw (see Fig. 6).4. Remove the joint ring M between the electrode and the terminal box.

7

Installation – continued –

. Put joint ring M onto the electrode.. Run all electrode wires through the hole for the fixing screw (see Fig. 6) in the terminal box.3. Place the terminal box onto the electrode part and turn it into the desired direction (cable gland).

Make sure that the joint ring is properly placed between the electrode and the terminal box.4. Pull all electrode wires through the fixing nut N. Use an open-end spanner A. F. 9 to fasten the

hexagon nut to the fixing screw, applying a torque of 5 Nm.5. Connect the electrode wires according to the wiring diagram (see page ) to the terminal lugs

(electronic circuit board O, functional earth L).

Mounting terminal box

Closing terminal box

When the work is finished:. Install the terminal cover I and tighten the cover screws H, ensuring correct position of the joint

ring.

Tools

n Open-end spanner A. F. 9 mmn Open-end spanner A. F. 4 mmn Screwdriver for cross recess head screws, size and

8

Example of Installation

400

Fig. 8

336

R 30

LRG 6-40

" BSP (ISO 8-)

4 E

4 5 6 7 E

NW

LW

NB

NB

Fig. 7

Conductivity metering, direct installation of electrode LRG 6-40 via lateral flanged connection

Conductivity metering and continuous boiler blowdown, direct installation of electrode LRG 6-40 via measuring pot and connection of continuous blowdown valve

R 30

NW

LW

NB

NB

600 336

LRG 6-40

" BSP (ISO 8-)

97

DN 50

DN [mm]

A [mm]

5 8

0 84

5 84

40 89

~50

~50

9

M

RTS

EGA

t syS

maet

Sm

es

RTS

EGA

t syS

maet

Sm

es

RT S

EG

A1 -

61

TGR

LR

T SE

GA

1 -6

1TG

RL

mpp-

Sµ

Example of Installation – continued –

LRG 6-40

Fig. 9

Conductivity metering and continuous boiler blowdown, installation of electrode LRG 6-40 in top blowdown line via separate measuring pot

E Joint ring ∅ 33 x 39, form D, DIN 7603, material: .430, bright-annealed

4 Boiler drum

5 Shut-off valve GAV

6 Continuous blowdown valve BAE 36

7 Measuring pot

Key

Outlet

DN 5-40

DN 5-40

Inlet

" BSP (ISO 8-)

6

5

0

Wiring

Bus cable

Use screened multi-core twisted-pair control cable – e.g. UNITRONIC® BUS CAN x x...mm or RE-YCYV-fl x x...mm as bus cable or the preassembled control cable that is available as accessory.The baud rate (data transfer rate) dictates the cable length between the bus nodes, and the total power consumption of the sensor dictates the conductor size.

The baud rate is set via code switches 3 (S8 to S0), Fig. 6. Default factory setting of conductivity electrode LRG x- 40: baud rate 50 kbit/s (cable length 5 m).For longer cable lengths reduce baud rate accordingly. Make sure that all bus nodes feature the same settings.

S 8 S 9 S 10 Baud rate Cable length Number of pairs and conductor size [mm2]

OFF ON OFF 250 kBit/s 125 m x x 0.34

Factory setting

ON ON OFF 5 kBit/s 50 m x x 0.5

OFF OFF ON 00 kBit/s 335 m x x 0.75

ON OFF ON 50 kBit/s 500 mavailable on demand

(depends on bus configuration)OFF ON ON 0 kBit/s 000 m

ON ON ON 0 kBit/s 000 m

Note

The max. baud rates and cable lengths indicated above are based on empirical values obtained by GESTRA. In certain cases it may be necessary to reduce the baud rate in order to ensure operational safety.The design and preparation of the data cable is an important factor for the electro-magnetic compatibility (EMC) of the equipment. Wiring should therefore be carried out with special care.

If you do not use the preassembled control cable, connect the connector and the jack for the CAN bus lines according to the wiring diagram.

Assigning the connector and jack

UNITRONIC® is a registered trademark of LAPP Kabelwerke GmbH, Stuttgart.

Wiring – continued –

Fig. 10

Wiring diagram of conductivity electrode LRG 16-40, LRG 17-40

Terminal lug

Terminating resistor 0 Ω

e. g. UNITRONIC® BUS CAN x x... twisted pair cable

Code switch for setting the node ID and baud rate

UNITRONIC® is a registered trademark of LAPP Kabelwerke GmbH, Stuttgart.

Measuring electrode

Temperature sensor

Ground

Connecting for functional earth

3 144512 253 Key

1 Screen

2 Voltage supply 4 V DC+

3 Voltage supply 4 V DC–

4 CAN Data line CH

5 CAN Data line CL

6 Terminating resistor 0 Ω

6

Coupler with terminating resistor 0 Ω Connector with terminating resistor 0 Ω

CEP Central earthing

point

Controller NRS ... LRR ... TRS ...

Operating device URB

Level electrode Conductivity electrode

NRG ... LRG ...

Temperature transmitter

TRV ...

Code switch, white

Wiring – continued –

Wiring diagram of conductivity electrode LRG 16-40, LRG 17-40 – continued –

Attention

n Wire equipment in series. Star-type wiring is not permitted!n Link screens of bus cables such that electrical continuity is ensured and connect them

once to the central earthing point (CEP).n In the CAN bus network the first and the last equipment of the data line must be

provided with a terminating resistor of 0 ohm (terminal CL/CH).n The CAN bus data line must not be interrupted during operation.

In the event of an interruption an alarm message will be generated.

Basic Settings

Factory settings

The conductivity electrode features the following factory set default values:n Baud rate: 50 kbit/s (5 m bus cable length)n Node ID: 05Enter the assigned node ID on the name plate.

3

Commissioning

Check wiring

Before commissioning the equipment please check:n Is the wiring of all CAN bus devices in accordance with the wiring diagrams?n Is the polarity of the bus line always correct?n Are the bus lines of the first and last devices provided with 0 Ω terminating resistors?

Apply mains voltage

n Apply mains voltage to control unit LRR -40 or apply bus supply voltage.n The green LED 1 lights up and goes out approx. every 5s. The data exchange is continuous.

Setting parameters

Use operating device URB or SPECTORcontrol to configure, parameterize, operate and show the control parameters of the conductivity electrode.

Operation

Start

. Apply mains voltage.. LED 1 is illuminated.3. LED 1 briefly goes out after 5 sec.4. Data exchange takes place.5. LED 1 is illuminated.If no switching-over takes place between the break and the data exchange, refer to “Malfunctions”.

4

Causes

Faulty installation and/or configuration of CAN bus components, excessive temperatures in the devices, defective electronic component parts or electromagnetic interferences of the supply system can result in system malfunctions.Other malfunctions are:n Incorrect communication in the CAN bus systemn Overloading of the 4 V power supply unit that is integrated in the control unit

System Malfunctions

Note

Before carrying out the systematic malfunction analysis please check:Wiring: Is the wiring in accordance with the wiring diagrams? Is the polarity of the bus lines always correct? Are the bus lines of the first and last devices provided with 0 Ω terminating resistors?Node ID: Are all node ID settings correct? Note that no node ID setting must be used twice!Baud rate: Does the baud rate setting correspond with the cable length? Is the baud rate setting of all devices identical?

5

Systematic malfunction analysis

The sources of malfunctions occurring in CAN bus systems operating with several bus-based stations must be analysed systematically since faulty components or incorrect settings can give rise to negative interactions with intact bus devices in the CAN bus system. These unwanted interactions can cause error messages in fully functional bus devices, which will make fault detection even more difficult.We recommend the following systematic fault finding procedure:

System Malfunctions – continued –

Step 1 (Start)Detach terminal strips in all sensing units of bus devices.

Level electrodeConductivity electrodePressure sensorTemperature sensoretc.

Step 3Apply mains voltage to bus devices of the system e. g. NRS ...and NRG ...

Step 2Plug in terminal strips of the sensing unit of one system e. g. NRS ...and NRG ... (electrodes)

System O.K.Detach terminal strips between bus devices of the system e. g. NRS ...and NRG ...

System MalfunctionUse fault-finding list to identify the fault(s)!

Cut off power supply to the equipment!

CheckUse fault-finding list to correct fault(s)!

Final test: Have all faults been eliminated?

Check next system

6

Malfunctions

Fault finding list for troubleshooting

Equipment does not work

Fault: No voltage supply, no function.Remedy: Check voltage supply and wiring.

Fault: The electronic circuit board is defective. Remedy: Replace electronic circuit board.

Only the red LED 2 is flashing

Fault: Conductivity electrode defective (internal connecting wires are short circuited or interrupted, insulating seal defective).

Remedy: Replace conductivitiy electrode.

Fault: Measuring surface of conductivity electrode is exposed.Remedy: Check installation and make sure that the measuring surface is submerged.

Fault: The measuring surface is contaminated and therefore an incorrect actual value is indicated (ascertained by reference measurement).

Remedy: Remove conductivity electrode and clean measuring surface.

Fault: Dirt deposits on the measuring surface cause MAX or MIN alarms although the actual value is between these limits (reference measurement).

Remedy: Remove conductivity electrode and clean measuring surface.

Fault: The earth connection to the vessel is interrupted. No function.Remedy: Clean seating surfaces and screw in the equipment together with the supplied joint ring

∅ 33 x 39, form D, DIN 7603 (material: .430, bright-annealed). Do not insulate the electrode with hemp or PTFE tape!

Green LED 1 and red LED 2 are flashing alternately

Fault: The thermal fuse has been triggered.Remedy: Check installation. The ambient temperature must not exceed 70°C. As soon as the tem-

perature falls below the max. admissible limit, the equipment switches back to operating mode.

Fault: The fluid temperature sensor is either short circuited or interrupted.Remedy: Replace conductivitiy electrode.

7

Malfunctions – continued –

Fault finding list for troubleshooting – continued –

Green LED 1 and red LED 2 are not illuminated

Fault: The electrode and the control unit cannot communicate.Remedy: Check 4 V bus supply, wiring, node ID, baud rate and terminating resistors.

If modifications have to be made, switch off the mains voltage and switch it on again after about. 5 sec.

Cleaning measuring electrode

The equipment must only be installed and removed by qualified and competent staff.Take chapter “Installation” into account.Before cleaning the measuring electrode, decommission and remove the conductivity electrode. Then undo the safety grub screw and unscrew manually the measuring tube.Cleaning electrode rod and measuring surface:n Wipe off non-adhesive deposits with a grease-free cloth.n To remove adhesive deposits use emery cloth (medium grain).

Replacing electronic circuit board

. Undo cover screws H and remove terminal cover I.. Pull the electrode wires out of the terminal lugs O on the circuit board.

Remove terminal strip J.3. Undo earth connection L.4. Unscrew the fixing screws K of the electronic circuit board and take out the circuit board. The

circuit board is available as spare part type LRV -4.5. Install the new electronic circuit board in reverse order.

Note

When ordering spare parts please state the serial number indicated on the name plate.After replacing the electronic circuit board carry out reference measurements in order to check the conductivity readings indicated by the operating device URB or SPECTORcontrol.If deviations occur correct the cell constant of the electrode. Observe the installation instructions of URB or SPECTORcontrol.

8

Decommissioning

Replacing conductivity electrode

. Switch off power supply for all control units of the CAN bus system.. Undo cover screws H and remove terminal cover I.3. Unplug terminal strip J.4. Remove conductivity electrode.5. Install and connect new conductivity electrode.6. Apply supply voltage to all control units.

Danger

Risk of severe burns and scalds to the whole body!Before removing the electrode make sure that the vessel and the measuring pot are depressurised (O bar) and cooled down to room temperature (0 °C).

Attention

The CAN-bus data line must not be interrupted during operation. Before removing bus cables from the terminal strip make sure that all connected devices are out of service.If data lines of equipment sending data are interrupted a malfunction message will be generated.

Disposal

Remove the conductivity electrode and separate the waste materials in accordance with the material specification. Electronic components (boards) must be disposed of separately.For the disposal of the conductivity electrode observe the pertinent legal regulations concerning waste disposal.

9

Annex

CAN bus

All devices (level, conductivity) are interconnected via CAN bus. The CANopen protocol is used for the data exchange between the equipment groups. All devices have an electronic address – the node ID. The four-core bus cable serves as power supply and data highway for high-speed data exchange.The CAN address (node ID) can be set between 1 and 123.The conductivity electrode LRG x-40 has already been configured at our works for operation with other GESTRA components and can be used straight away without having to set the node ID.

Factory set node IDs

Individual node IDs must be set manually in the respective equipment.Please observe the pertinent installation instructions.

Control Units Sensors

NRS1-40 ID:001

NRS 1-41 ID:006NRS 1-42 ID:020NRS 2-40 ID:039NRR 2-40 ID:040LRR 1-40 ID:050

NRG 16-40 ID:002NRG 16-40 ID:003NRG 16-41 ID:007NRG 16-42 ID:021NRG 26-40 ID:041

LRG 16-40 ID:051

Node ID

Should it be necessary to establish other node IDs please take the interdependence of the equipment into consideration and assign the node IDs for the individual group components according to the following table:

Controller URZ 40a

Intermittent blowdown valve

BAE 3x-40

Control unit LRR 1-40

Conductivity electrode LRG 1x-40

Reserved

X – 1 X X + 1 X + 2

49 50 51 52

Factory setting

Reserved area

30

Annex – continued –

Establishing / changing node ID

In order to enable communication within the CAN bus system, each item of equipment (e.g. controller) must have a unique node ID.Terminal box open:. Use a thin blade screwdriver to set the node ID via code switches 3 S – S7. Use the table as

reference.. Replace terminal cover I and fasten cover screws H tightly.3. Enter the adjusted node ID on the name plate.4. If necessary (refer to installation instructions) change the node ID of the control equipment

LRR -40.

A node ID must not be used for more than one item of equipment in the CAN bus system.The node ID 0 is not permissible.

Attention

3

Annex – continued –

Table “Node ID”

In a CAN bus system a maximum of 3 nodes (devices) can be administered. Each node has its own address (node ID). This address can be set via a 0-pole code switch 3.

3 3Code switch, white Code switch, white

Node ID 5

S ON

S ON

S3 OFF 4

S4 OFF 8

S5 ON 6

S6 ON 3

S7 OFF 64

(Factory setting)

Node ID 76

S OFF

S OFF

S3 ON 4

S4 ON 8

S5 OFF 6

S6 OFF 3

S7 ON 64

(Example)

S 8 S 9 S 10 Baud rate Cable length

OFF ON OFF 250 kBit/s 125 m

Factory setting

ON ON OFF 5 kBit/s 50 m

OFF OFF ON 00 kBit/s 335 m

ON OFF ON 50 kBit/s 500 m

OFF ON ON 0 kBit/s 000 m

ON ON ON 0 kBit/s 000 m

ON1 2 3 54 6 7 8 9 0

ON1 2 3 54 6 7 8 9 0

ON1 2 3 54 6 7 8 9 0

ON1 2 3 54 6 7 8 9 0

3

Declaration of Conformity

We hereby declare that the equipment LRG 16-40, LRG 17-40 conform to the following European guidelines:n LV guideline 73/3/eec version 93/68/eecn Pressure Equipment Directive (PED) 97/3/EC of 9 May 997

Applied conformity assessment procedure: Annex III, Module B and D, verified by notified body 055

This declaration is no longer valid if modifications are made to the equipment without consultation with us.

Bremen, st December 005GESTRA AG

Dipl.-Ing. Lars Bohl(Academically qualified engineer)Quality Assurance Representative

Dipl.-Ing. Uwe Bledschun(Academically qualified engineer)

Head of Design Dept.

Annex – continued –

33

For your notes

34

For your notes

35

For your notes

368854-0/806cm · 005 GESTRA AG · Bremen · Printed in Germany

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