Endress+Hauser nivotester FTW 420 User Manual

KA 066F/00/a6/02.01
52009678
ENDRESS + HAUSER
NIVOTESTER FTW 420
1.
250 V/4A~
9
2.
8
7
MIN
MAX
13
12
nivotester
FTW 420
d Füllstandgrenzschalter
e Level Limit Switch
f Détecteur de niveau
es Detector de nivel
i Interruttore di livello
nl Niveauschakelaar
Hauser+Endress
The Power of Know How

Endress+Hauser nivotester FTW 420 Specifications

General

Brand	Endress+Hauser
Model	nivotester FTW 420
Category	Switch
Language	English

Summary

Safety Information

General Safety Warnings

General warnings regarding misuse and unauthorized personnel.

Measuring System Overview

Electrical Connections

Safety Circuit Configuration

Explains the wiring for the fail-safe mode and safety switching.

Device Testing

System Test Scenarios

Test Outcomes and Calibration Needs

Calibration Procedures

Low Conductivity Calibration

Calibration process for fluids with low electrical conductivity.

Material Build-up Calibration

Calibration process for situations with material build-up on the probe.

Alternative Calibration Scenarios

Low Conductivity Calibration (Probe Covered)

Repeat System Test and Adjustment

Material Build-up Calibration (Probe Uncovered)

Adjustment Procedures by Resistance Range

Technical Data

Power Supply Specifications

Electrical Specifications

Fuse Replacement Procedure

Opening the Device Unit

Fuse Replacement Steps

Correct Fuse Types and Ratings

Troubleshooting Guide

Incorrect Switching Behavior

Addresses issues where the device fails to switch correctly during operation.

Probe Build-up and Corrosion Issues

Discusses problems caused by build-up or corrosion on the measurement probe.