GESTRA LRGT 16-1 - User Manual

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Installation & Operating Manual

EN

English

Conductivity Controller LRR

Visual Display and Operating Unit URB

LRR 1-52

LRR 1-53

URB 55

850645-01

Table of Contents

Other manuals for GESTRA LRGT 16-1

Installation & Operating Instructions28 pages

Questions and Answers

S
sarahgrahamAug 9, 2025
What to do if GESTRA Measuring Instruments equipment fails to work?
- J
  James WalkerAug 10, 2025
  If your GESTRA Measuring Instruments equipment isn't working, start by checking the power supply and all electrical connections to rule out a power failure. If the issue persists, the electronic circuit board might be faulty, so you should check or replace it. Also, ensure the earth connection to the vessel isn't interrupted; clean the seating surfaces and screw in the conductivity transmitter with a new sealing ring, avoiding insulation of the electrode thread.
M
Michael NguyenAug 16, 2025
Why is GESTRA Measuring Instruments equipment not working accurately?
- R
  Ricardo StephensonAug 17, 2025
  Inaccurate readings from GESTRA Measuring Instruments can stem from several causes. Start by checking for dirt on the transmitter measuring electrode(s) and clean them if necessary. For LRGT 16-2 models, ensure the spacer disc PEEK 8 is correctly positioned. Also, if the conductivity reading is higher than expected, reduce the temperature coefficient during commissioning or the cell constant during operation. Conversely, if the reading is lower, increase these values. If adjusting the cell constant doesn't resolve the issue, remove the conductivity transmitter and clean the measuring surface or electrodes.
S
Stephanie PriceSep 1, 2025
How to prevent electric shock when working on GESTRA Controller electrical systems?
- L
  Laura JonesSep 1, 2025
  To avoid electric shock when working on GESTRA Controller electrical systems: * Always switch off the voltage to the equipment before working on the terminal strips (installation, electrical connection, disassembly). * Disconnect all poles of the supply cable from the mains and secure them so they cannot be switched back on. * Before starting work, check that the system is not carrying live voltage.
M
Melissa LewisNov 23, 2025
What to do if LEDs indicate a malfunction in GESTRA Measuring Instruments?
- A
  Anthony StewartNov 23, 2025
  If the LEDs on your GESTRA Measuring Instruments are indicating a malfunction, consider these potential issues: * Check the electrode wires for interruptions or exposed measuring surfaces/electrodes, ensuring connections are secure at the electronic circuit board (terminal lugs 1-4). Also, check the water level and installation. * Inspect the electrode wires for short circuits, again checking connections at the electronic circuit board (terminal lugs 1-4). * If the value is below the set value of 0%, check the water level and installation. * If the value is above the set value of 100%, set a larger measuring range. * If the temperature in the terminal box exceeds 85°C, ensure the ambient temperature does not exceed 70°C. * For open or short circuits in wires to the resistanc...

Summary

Hazard Symbols and Warning Types

Types of Warning

Classification and meaning of different warning symbols used in the manual.

Improper Use

Basic Safety Notes

Technical Data - LRR 1-52, LRR 1-53

Technical Data - URB 55

Factory Settings - LRR 1-52, LRR 1-53

Factory Settings - URB 55

Installing the LRR 1-52, LRR 1-53 Conductivity Controller

Required Installation Aperture for Control Cabinet

Specifies the necessary cutout dimensions for panel mounting.

Installing the URB 55

URB 55 Ports and Connections

Details the available ports and their pin assignments for the URB 55.

Safety Notes for Electrical Connection

Wiring Diagram - LRR 1-52 Conductivity Controller

Connecting an LRG 16-9 Conductivity Electrode

Specific instructions for connecting a particular conductivity electrode type.

Wiring Diagram - LRR 1-53 Conductivity Controller

Electrical Connection - LRR 1-52, LRR 1-53

Connecting LRGT Conductivity Transmitter

Connecting Data Line to URB 55

Changing the Equipment Settings

Code Switch Settings

Visual Display and Operating Unit URB 55

Switching on the Supply Voltage

Operation and Navigation

Parameter Input and Control

The Home Screen of the LRR 1-52, LRR 1-53 Conductivity Controller

Alarms and Error Messages

Opening the Alarm History - Full List of All Alarms

System Settings

System Information and Configuration

Data Exchange via Modbus TCP

Configuring the Conductivity Controller

Setting Switchpoints and Set Point

How to define conductivity limits and desired set points.

Blowdown Valve Setup

Electrode and Range Calibration

Steps for calibrating the electrode, setting correction factors, and defining ranges.

Control Parameter Tuning

Guidance on adjusting PID controller parameters like proportional band and reset time.

Automatic Intermittent Blowdown

Configuration of the automatic intermittent blowdown function parameters.

URB 55 System Malfunctions

Fault Codes and Common Issues

Lists common fault codes for controllers and general problems with the URB 55.

System Malfunctions - LRR 1-52, LRR 1-53

Troubleshooting and Service

Malfunction Checks and Procedures

Summary

Hazard Symbols and Warning Types

Types of Warning

Classification and meaning of different warning symbols used in the manual.

Improper Use

Basic Safety Notes

Technical Data - LRR 1-52, LRR 1-53

Technical Data - URB 55

Factory Settings - LRR 1-52, LRR 1-53

Factory Settings - URB 55

Installing the LRR 1-52, LRR 1-53 Conductivity Controller

Required Installation Aperture for Control Cabinet

Specifies the necessary cutout dimensions for panel mounting.

Installing the URB 55

URB 55 Ports and Connections

Details the available ports and their pin assignments for the URB 55.

Safety Notes for Electrical Connection

Wiring Diagram - LRR 1-52 Conductivity Controller

Connecting an LRG 16-9 Conductivity Electrode

Specific instructions for connecting a particular conductivity electrode type.

Wiring Diagram - LRR 1-53 Conductivity Controller

Electrical Connection - LRR 1-52, LRR 1-53

Connecting LRGT Conductivity Transmitter

Connecting Data Line to URB 55

Changing the Equipment Settings

Code Switch Settings

Visual Display and Operating Unit URB 55

Switching on the Supply Voltage

Operation and Navigation

Parameter Input and Control

The Home Screen of the LRR 1-52, LRR 1-53 Conductivity Controller

Alarms and Error Messages

Opening the Alarm History - Full List of All Alarms

System Settings

System Information and Configuration

Data Exchange via Modbus TCP

Configuring the Conductivity Controller

Setting Switchpoints and Set Point

How to define conductivity limits and desired set points.

Blowdown Valve Setup

Electrode and Range Calibration

Steps for calibrating the electrode, setting correction factors, and defining ranges.

Control Parameter Tuning

Guidance on adjusting PID controller parameters like proportional band and reset time.

Automatic Intermittent Blowdown

Configuration of the automatic intermittent blowdown function parameters.

URB 55 System Malfunctions

Fault Codes and Common Issues

Lists common fault codes for controllers and general problems with the URB 55.

System Malfunctions - LRR 1-52, LRR 1-53

Troubleshooting and Service

Malfunction Checks and Procedures

GESTRA LRGT 16-1 Specifications

General

Brand	GESTRA
Model	LRGT 16-1
Category	Controller
Language	English

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