Endress+Hauser Nivotester FTL325N-**** Series User Manual

Products Solutions Services
SD00188F/00/EN/13.13
71238762
Functional safety manual
Liquiphant M/S with FEL56
and Nivotester FTL325N
Level Limit Measuring System
[Ex ia]
CH1
CH1
FTL325N
T
[Ex ia]
CH1 CH2
CH3
CH1 CH2 CH3
T
FTL325N
Application
Minimum detection (also dry running protection) of all
types of liquids in tanks to satisfy particular safety systems
requirements as per IEC 61508/IEC 61511-1.
The measuring device fulfils the requirements concerning
• Safety functions up to SIL 2
• Explosion protection by intrinsic safety or flameproof
enclosure
• EMC to EN 61326 and NAMUR Recommendation
NE 21.
Your benefits
• For minimum detection up to SIL 2
– Independently assessed (Functional Assessment) by
exida.com as per IEC 61508/IEC 61511-1
• Monitoring for corrosion on the tuning fork of the
sensor
• No calibration
• Fault message for circuit break and short-circuit
• Functional test of subsequent devices at the push
of a button
• Protected against outside vibration
• Easy commissioning

Endress+Hauser Nivotester FTL325N-**** Series Specifications

General

Process Temperature	-40°C to +130°C
Housing Material	Aluminum
Approvals	ATEX, IECEx, SIL
Measuring Range	N/A (Point level detection)
Protection Rating	IP66, IP67

Summary

Level Limit Measuring System

Application

Minimum detection of liquids in tanks, satisfying safety systems requirements per IEC 61508/IEC 61511-1.

Your benefits

Lists advantages like SIL 2 capability, corrosion monitoring, no calibration, and easy commissioning.

SIL declaration of conformity

Introduction

General depiction of a safety system (protection function)

Explains parameter tables for determining Safety Integrity Level (SIL), including PFDav, HFT, and SFF.

Structure of the measuring system

Level limit measuring system

Diagram showing the Liquiphant M/S and Nivotester FTL325N devices.

Safety function

Details settings and permitted configurations for MIN safety and NO contacts of level relays.

Permitted device types

Safety function data

Supplementary device documentation

Settings and installation instructions

Installation instructions

Guidance on correct installation of Liquiphant M/S + Nivotester FTL325N, referencing Compact Instructions and Technical Information.

Response in operation and failure

Recurrent function tests of the measuring system

Appendix

Specific values and wiring options for the measuring system

Tables detailing PFDav, SFF, and wiring schemes for various configurations.

Exida Management Summary

FMEDA and Proven-in-use Assessment

Summary of hardware assessment results for Liquiphant M/S and Nivotester FTL325N according to IEC 61508.

Supplementary Documentation