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Vega FiberFlex LFXG-H User Manual

Vega FiberFlex LFXG-H
102 pages
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Operating Instructions
LFXG-H
®
FiberFlex
®
Detector with GEN2000
®
Electronics for Level Measurement
Document ID:
31386
Nuclear

Table of Contents

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Vega FiberFlex LFXG-H Specifications

General IconGeneral
Measuring range0.05 m to 200 m
Process fittingThreaded, Flange
OutputBluetooth, USB
Measurement Range0.05 m to 200 m
Operating Temperature-10°C to 50°C
Storage Temperature-40 ... +80 °C (-40 ... +176 °F)
InterfaceBluetooth, USB

Summary

Chapter 1 Introduction

Nuclear materials notice

Information on radioactive material in equipment and handling precautions.

Unpacking the equipment

Instructions for safely removing the equipment from its packaging.

Storing the equipment

Guidelines for proper storage of the gauge and source holder.

Certifications

List of agencies and standards for which the gauge is designed.

Safety Information for EX Areas

Specific safety precautions for installation in explosive areas.

LFXG-H specifications

Detailed technical specifications for the LFXG-H gauge.

Typical applications

Examples of industries and uses for the VEGA level gauge.

Principle of operation

Explanation of how the gauge measures levels using radiation.

System overview

Overview of gauge components: Source holder, detector assembly, communication.

Communicating with the gauge

Methods for interacting with the gauge via communicator or PC.

Customer Service

Contact information and procedures for technical support and repairs.

Chapter 2 Installation

Testing on the bench

Pre-installation testing of the detector assembly with communication devices.

Location considerations

Factors for optimal installation: temperature, obstructions, cross-talk.

Mounting the measuring assembly

Methods and options for physically mounting the gauge assembly.

Wiring the equipment

Procedures for connecting the gauge's electrical wiring, including plugs.

Switch for CE compliance

Procedure for installing a power line switch for CE compliance.

Output current loop

Specifications and connections for the 4-20mA current loop output.

Relay

Information on relay specifications and operation.

RS-485

Details on RS-485 communication setup and cable length.

Communication

Methods for connecting and communicating with the gauge.

Process alarm override switch

Installing a switch to manually deactivate process alarms.

Power

Information on power supply requirements and connections for the gauge.

Conduit

Requirements and procedures for conduit installation, especially in hazardous areas.

Commissioning the gauge

Steps involved in bringing the gauge online after installation.

Field service commissioning call checklist

Checklist to prepare for VEGA field service commissioning.

Chapter 3 Calibration

Calibrating the current loop (analog output)

Procedure to adjust the 4-20mA output to a reference.

Measuring the current loop output

Steps for measuring current loop output using meters.

Calibration methods

Comparison of standard vs. simple calibration methods.

Theory of calibration

Explanation of calibration principles and data collection.

Standard calibration method

Method involving collecting intermediate data points for accuracy.

Simple calibration method

Method requiring only two calibration points, less precise.

Choosing the linearizer type

Selecting between linear and non-linear response curves for output.

Table - Non-linear

Using non-linear tables for standard calibration accuracy.

Table - Linear

Using linear tables for simple calibration.

Checking the gauge repeatability

Procedure to verify the consistency of the gauge's measurements.

Calibration procedures

Detailed steps for performing standard and simple calibrations.

Periodic process standardization

Adjusting the system to compensate for drifts over time.

Standardization reminder

Setting up alarms for when standardization is due.

Chapter 4 Advanced functions

Process chain

Viewing software calculation steps for level measurement.

Gauge Information

Accessing process variables, gauge details, and historical data.

Min/Max History tab

Displaying minimum and maximum parameter values since last reset.

New hardware or corrupt EEPROM

Handling situations with new hardware or corrupted memory.

Test modes

Modes for troubleshooting: Current Loop, Sensor, Auxiliary Input, Relay, Temperature.

Selecting the transmitter’s type and location

Configuring gauge type (Level/Density) and location (Local/Remote).

Chapter 5 Diagnostics and repair

Software diagnostics

System alerts for potential problems via messages and output changes.

Gauge Status tab

Displaying current system status and historical diagnostic information.

Diagnostic alarms and HART messages

Interpreting diagnostic conditions and HART messages.

Gauge status diagnostics screens

Checking system status and historical data via diagnostic screens.

Acknowledging diagnostic alarms

Procedures for clearing diagnostic alarms.

Diagnostic alarm messages

Understanding and interpreting various diagnostic alarm messages.

Analog alarm

Alarm triggered when detector counts fall below a threshold.

Process alarm

Alarm triggered by process level exceeding high or low setpoints.

X-ray alarm

Alarm triggered by external radiation sources affecting measurements.

Auxiliary x-ray alarm

Detecting process changes caused by external x-rays.

History information

Reviewing critical events and internal repairs from diagnostic history.

Troubleshooting

Field-replaceable circuit boards, test points, jumpers, and LED indicators.

Maintenance and repair

Recommended periodic maintenance schedule.

Recording the source wipe and shutter check

Logging source wipe and shutter check events in software.

Field repair procedures

Procedures for replacing field-repairable assemblies/boards.

Spare parts

Information on obtaining replacement parts.

Replacing the CPU or Power supply board

Step-by-step guide for replacing CPU or power supply boards.

Returning equipment for repair to VEGA

Process for returning equipment for service or repair.

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