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Endress+Hauser Liquiphant FTL31 User Manual

Endress+Hauser Liquiphant FTL31
40 pages
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Operating Instructions
Liquiphant FTL31
Point level switch for liquids
BA01285F/00/EN/03.22-00
71578503
2022-07-12

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Endress+Hauser Liquiphant FTL31 Specifications

General IconGeneral
Measuring PrincipleVibrating Fork
ApplicationLevel detection in liquids
Device TypeLevel Switch
Wetted Materials316L, PTFE, PEEK
OutputPNP, NPN, Relay
Power Supply24 V DC
Housing MaterialAluminum
Protection RatingIP66/IP67
ApprovalsATEX, IECEx
ConnectionG 1
Medium Density0.7 g/cm3

Summary

Basic Safety Instructions

2.1 Personnel Requirements

Outlines qualifications and authorizations for personnel.

2.2 Intended Use and Incorrect Use

Defines the device's purpose, media compatibility, and consequences of misuse.

2.3 Workplace Safety

Details safety measures for working with the device.

2.4 Operational Safety

Emphasizes safe operation and operator responsibility.

2.5 Product Safety

Confirms design, testing, and compliance with safety standards.

Product Description

Mounting

5.1 Mounting Requirements

General conditions, orientation, switch points, and viscosity impact on mounting.

5.3 Post-Mounting Checks

Checklist for verifying correct installation and device security.

Electrical Connection

6.1 3-Wire DC-PNP Connection

Details on connecting 3-wire DC-PNP devices in MAX/MIN modes.

Max and Min Safety Modes

Terminal assignments and LED indications for Maximum and Minimum safety operating modes.

6.1.2 2-Wire AC/DC Connection Overview

Details on 2-wire AC/DC connection and relay selection.

6.2 Post-Connection Checks

Checklist for verifying correct electrical connections and cable integrity.

Commissioning

7.1 Function Checks

Lists checklists to perform before commissioning the device.

Diagnostics and Troubleshooting

8.1 LED Display Diagnostics

Tables listing malfunctions, causes, and corrective actions based on LED indicators.

Maintenance

Technical Data

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