Endress+Hauser Liquiphant M FTL50H User Manual

TI328F/00/en
Technical Information
Liquiphant M FTL50(H), FTL51(H)
Vibration Limit Switch
Level limit switch for all liquids.
Suitable for use in hazardous areas, food and pharmaceuticals
Application
The Liquiphant M is a level limit switch for use in all
liquids
– for process temperatures of –50 °C to 150 °C
– for pressures up to 100 bar
– for viscosity up to 10000 mm
2
/s
– for densities 0.5 g/cm
3
or 0.7 g/cm
3
other settings
available on request
– foam detection on request
The function is not affected by flow, turbulence, bubbles,
foam, vibration, bulk solids content or build-up.
The Liquiphant is thus the ideal substitute for float
switches.
FTL50:
Compact design, ideal for mounting in pipes and for
installation in areas difficult to access
FTL51:
With extension pipe up to 3 m
(6 m on request)
FTL50H, FTL51H:
With polished tuning fork and easy-to-clean process
connections and housings for food and pharmaceutical
applications.
High corrosion-resistant AlloyC4 (2.4610) is available for
the fork and process connections for applications in very
aggressive liquids.
EEx ia, EEx de and EEx d protection enable it to be used
in hazardous areas.
Your benefits
• Use in safety systems requiring functional safety
to SIL2/SIL3 in accordance with IEC 61508/
IEC 61511-1
• Large number of process connections to choose from:
universal usage
• Wide variety of electronics, e.g. NAMUR, relay,
thyristor, PFM signal output: the right connection for
every process control system
• PROFIBUS PA protocol:
for commissioning and maintenance
• No calibration: quick, low-cost start-up
• No mechanically moving parts: no maintenance,
no wear, long operating life
• Monitoring of fork for damage: guaranteed function
• FDA approved materials (PFA Edlon)

Endress+Hauser Liquiphant M FTL50H Specifications

General

Type	Liquiphant M FTL50H
Measuring principle	Vibrating fork
Medium	Liquids
Device Type	Level switch
Application	Level detection
Process temperature	-40 to 100 °C
Process pressure	Up to 40 bar (580 psi)
Process pressure absolute / max. overpressure limit	Up to 40 bar (580 psi)
Output signal	PNP
Material	Stainless steel
Approval	ATEX, IECEx
Housing material	Aluminum
Connection	Thread
Power supply	24 VDC
Protection Rating	IP66/IP67

Summary

Liquiphant M FTL50(H), FTL51(H) - Vibration Limit Switch

Application Overview

Details the primary uses and applications of the Liquiphant M level limit switch.

Key Product Benefits

Highlights the advantages and features that make the Liquiphant M a preferred choice.

Product Specifications and Operating Conditions

Environment and Medium Properties

Covers ambient temperature, storage, climate, medium conditions like temp, pressure, density, viscosity.

Mechanical Construction and Design

Details dimensions, weights, materials, and process connection types.

Application Details and Principles

Level Detection and Measuring Principle

Explains how the Liquiphant M detects liquid levels and its core measuring principle.

Electronic Versions and Input Parameters

Electronic Inserts for Switches and Sensors

Describes various electronic inserts (FEL51-FEL58, FEL50A) for different functions.

Electronic Insert FEL51 (AC 2-wire)

Output Signal and Connectable Load

Explains output signals, LED indicators, and load connection requirements.

FEL51 (AC) - Compact Housing Specifications

Compact Housing: Power and Wiring

Specifies power supply and electrical connection for the AC compact housing variant.

Compact Housing: Output and Load

Details output signal behavior and connectable load for the AC compact housing.

Electronic Insert FEL52 (DC PNP)

Power Supply and Three-Wire DC Connection

Covers power supply requirements and three-wire DC connection for FEL52.

Output Signal and Load Characteristics

Explains output signals, alarm signals, and load connection for FEL52.

FEL52 (DC PNP) - Compact Housing Details

Compact Housing: Output and LED Signals

Describes output signal, LED states, and their relation to sensor status.

Electronic Insert FEL54 (AC/DC Relay Output)

Power Supply and Electrical Connection

Covers supply voltage ranges (AC/DC) and universal current connection.

Output Signal and Load Ratings

Details relay output signals, LED indicators, and load connection ratings.

Electronic Insert FEL55 (8/16 mA)

Power Supply and Two-Wire Connection

Specifies power supply and two-wire connection for separate switching units.

Output Signal and Load Examples

Explains the 8/16 mA output signal and provides load connection examples.

Electronic Insert FEL56 (NAMUR L-H Edge)

Connection to NAMUR Amplifiers

Details connection to isolating amplifiers and NAMUR interface standards.

Output Signal and Alarm Behavior

Describes output signal variations and event of damaged sensor signal.

Electronic Insert FEL58 (NAMUR H-L Edge)

Connection to Isolating Amplifiers

Details connection to isolating amplifiers and NAMUR interface standards.

Output Signal and Error Detection

Explains output signals and how sensor errors are detected.

FEL58 (NAMUR H-L Edge) - Compact Housing

Compact Housing: Electrical Connections

Details M12 connector options for FEL58 in compact housing.

Compact Housing: Output and Status

Electronic Insert FEL57 (PFM)

Power Supply and Connection for Switching Units

Electronic Insert FEL50A (PROFIBUS PA)

PROFIBUS PA Connection and Data Transfer

Details the two-wire connection for PROFIBUS PA and data transfer.

Digital Communication Functions

Connection, Function, and Performance

Connection Cables and Functional Modes

Performance Characteristics and Influences

Installation and Mounting Guidelines

Installation Instructions and Switch Points

Environmental and Medium Condition Specifications

Storage, Climate, Protection, and EMC

Medium Properties and Pressure Ratings

Material Properties and Construction Options

Process Connections: Threads, Flanges, and Necks

Threaded and Flanged Process Connections

Welding Necks and Flush-Mounting Options

Human Interface: Process Connections and Electronics

Electronic Insert Indicators and Controls

Certifications and Approvals Overview

General and Specific Product Certifications

Lists general approvals like EHEDG, 3A, and other specific certifications.

Housing and Electronic Insert Combinations

Hazardous Area Certifications

ATEX, FM, CSA, and TIIS Certifications

Covers certifications for hazardous area applications like ATEX, FM, CSA, and TIIS.

Ordering Information and Process Connections

Product Structure and Approval Codes

Defines product structure codes, design variants, and approval codes.

Process Connections and Additional Weights

Lists process connection options, materials, and their respective weights.

Product Configuration: Connections, Probes, Electronics

Additional Process Connections and Probe Types

Electronics, Housings, and Cable Entries

FTL50H/FTL51H Product Options

Approvals and Process Connections for H Variants

Lists approval codes and process connection options for FTL50H/FTL51H models.

Probe Length, Electronics, and Housing Options

Probe Length Types and Electronic Insert Details

Housing, Cable Entry, and Additional Options

Supplementary Documentation

Operating Instructions and Technical Information

Safety, EMC, and System Information

Safety, ATEX, and System Information

Functional Safety (SIL) Documentation

ATEX Safety Instructions and System Information