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Vega VEGAFLEX 81 User Manual

Vega VEGAFLEX 81
100 pages
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Operating Instructions
TDR sensor for continuous level and
interface measurement of liquids
VEGAFLEX 81
Modbus and Levelmaster protocol
Coax probe
Document ID: 42283

Table of Contents

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Vega VEGAFLEX 81 Specifications

General IconGeneral
BrandVega
ModelVEGAFLEX 81
CategoryAccessories
LanguageEnglish

Summary

For your safety

2.1 Authorised personnel

Specifies that operations must be performed by trained, authorised personnel.

2.2 Appropriate use

Defines the VEGAFLEX 81 as a sensor for continuous level measurement.

2.3 Warning about incorrect use

Highlights hazards from inappropriate or incorrect instrument use.

2.4 General safety instructions

Outlines general safety requirements, regulations, and user obligations.

Product description

3.1 Configuration

Details information on the type label for instrument identification and use.

3.2 Principle of operation

Explains how the sensor measures level using microwave pulses.

Prerequisites for interface measurement

Lists conditions required for accurate interface measurements between two liquids.

Mounting

4.1 General instructions

Gives general instructions for installing the sensor, including warnings.

4.2 Mounting instructions

Provides specific instructions for mounting the sensor in different vessel types and situations.

Connecting to power supply

5.1 Preparing the connection

Covers safety instructions, voltage supply, connection cables, and grounding.

5.2 Connecting

Describes the procedure for connecting the voltage supply and signal output.

5.3 Wiring plan, double chamber housing

Illustrates wiring connections for electronics and terminal compartments.

5.4 Double chamber housing with DIS-ADAPT

Explains connecting external display units using the DIS-ADAPT connector.

Set up the sensor with the display and adjustment module

6.1 Adjustment volume

Explains the purpose of the display and adjustment module for sensor parameter adjustment.

6.2 Insert display and adjustment module

Provides step-by-step instructions for installing and removing the display module.

6.3 Adjustment system

Describes the use of display keys and the adjustment system interface.

6.4 Parameter adjustment - Quick setup

Guides through a simplified setup process for adapting the sensor to applications.

Medium - dielectric constant

Defining medium type and dielectric constant for level measurement.

Max. adjustment

Entering maximum adjustment values.

Min. adjustment

Entering minimum adjustment values.

Max. adjustment - Interface

Setting maximum adjustment for interface measurements.

Min. adjustment - Interface

Setting minimum adjustment for interface measurements.

False signal suppression

Describes how to suppress false signals to improve measurement accuracy.

6.5 Parameter adjustment - Extended adjustment

Introduces advanced settings for demanding measurement points.

Setup - Application - Medium, dielectric constant

Defining medium type and dielectric constant for level measurement.

Setup - Application - Dielectric constant

Setting the dielectric constant for the upper medium.

Setup - Max. adjustment Level

Entering maximum adjustment values for level measurement.

Setup - Min. adjustment Level

Entering minimum adjustment values for level measurement.

Setup - Max. adjustment - Interface

Setting maximum adjustment for interface measurements.

Setup - Min. adjustment - Interface

Setting minimum adjustment for interface measurements.

Setup - Current output, adjustment

Assigning specific measured values to the current output.

Setup - False signal suppression

Explains circumstances causing interfering reflections and how to suppress them.

6.6 Saving the parameter adjustment data

Recommends documenting or saving parameter adjustments via PACTware.

Setting up sensor and Modbus interface with PACTware

7.1 Connect the PC

Instructions for connecting the PC to the sensor electronics and Modbus electronics.

To the RS 485 cable

Connecting the PC to the RS 485 cable via a standard interface adapter.

Prerequisites

Listing requirements for parameter adjustment with PACTware.

7.2 Parameter adjustment with PACTware

Explaining the need for PACTware and DTMs for sensor parameter adjustment.

7.3 Set up with the quick setup

Introducing quick setup as a fast method for sensor parameter adjustment.

Quick setup

Details on using the assistant-driven quick setup for basic settings.

Extended adjustment

Using the DTM's menu structure for advanced and special settings.

Step 2 Application

Selecting the application type, medium, and properties for measurement.

Interface measurement

Requirements for interface measurement, including gas phase and dielectric constant.

Application - Level measurement

Setting up for level measurement of liquids and bulk solids.

Application - Interface measurement

Setting up for interface measurement between two liquids.

Step 3 Adjustment

Entering min/max adjustment values for level and interface measurements.

7.4 Saving the parameter adjustment data

Recommends documenting or saving parameter adjustments via PACTware.

Diagnostics and service

8.2 Diagnosis memory

Describes the instrument's memory for storing diagnostic data.

8.3 Status messages

Explains the instrument's self-monitoring and diagnostic status messages.

Status messages

Categorizes status messages into Failure, Function check, Out of specification, and Maintenance.

Failure (failure)

Details error codes, causes, and rectifications for "Failure" status messages.

Function check

Lists causes and rectifications for "Function check" status messages.

Out of specification

Lists causes and rectifications for "Out of specification" status messages.

Maintenance

Lists causes and rectifications for "Maintenance" status messages.

8.4 Rectify faults

Provides procedures for fault rectification and checking the 4-20 mA signal.

Reaction when malfunctions occur

Operator responsibility for taking suitable measures to rectify faults.

Procedure for fault rectification

First measures for fault rectification: evaluating messages, checking output, treating errors.

Check the 4 ... 20 mA signal

Procedure for connecting a multimeter to check the current signal.

Treatment of measurement errors

Discusses common measurement errors and their causes/rectifications.

Measurement error with constant level

Explains errors related to constant level readings and their solutions.

Measurement error during filling

Details errors occurring during filling and their corresponding rectifications.

Measurement error during emptying

Lists errors during emptying and the steps to resolve them.

8.5 Exchanging the electronics module

Instructions for replacing a defective electronics module.

8.6 Software update

Outlines requirements and procedures for updating instrument software.

Dismounting

Supplement

10.1 Technical data

Provides general data on materials, wetted parts, and non-wetted parts.

Basics Modbus

Modbus register

Modbus RTU commands

Levelmaster commands

Configuration of typical Modbus hosts

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