Vibronic
Point level detection
Liquiphant FTL81

Point level switch for liquids for FailSafe overfill prevention

FTL81

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Specs at a glance

Process temperature

-60°C...+280°C
(-76°F...+540°F)
Process pressure absolute / max. overpressure limit

Vacuum...100 bar
(1450 psi)
Min. density of medium

Density from 0.4 g/cm3
(0.4 SGU)

See all specifications

Field of application

Liquiphant FTL81 is a point level switch for use in hazardous areas with all international certificates. FailSafe overfill prevention in applications with functional safety up to SIL3 with one device. Reliable measurement values, not affected by: changing media properties, flow, turbulences, gas bubbles, foam, vibrations or build-up.

Point level switch for liquids up to SIL3.

Process connections: Threads and flanges
Temperature: -60 to +280°C (-76 to +540°F)
Pressure: -1 to +100bar (-14.5 to +1,450psi)
Sensor length: Extension pipe up to 3m (9.8ft)
Sensor material: 316L, Alloy C
International explosion protection certificates, overfill prevention WHG, SIL, marine approvals

Benefits

Use in safety systems requiring functional safety to SIL3 in accordance with IEC 61508 Ed.2.0/ IEC 61511-1/ISA 84-1 and DIN EN ISO 13849
Proof test: proof testing interval up to 12 years, Slave devices tested at the press of a button
Permanent self-monitoring/internal redundancy
4-20mA interface (acc. to NAMUR NE 06/NE 43): easy integration via the switching unit (Nivotester FailSafe FTL825) with a two-channel output (safety contacts) and locking function or direct integration into a safety PLC
No adjustment: quick, low-cost startup
No mechanically moving parts: no maintenance, no wear, long operating life
Monitoring of fork for damage, corrosion, build-up and mechanical blocking

Videos

Vibronic measuring principle
Functional safety SIL in process instrumentation
Liquiphant with permanent function check is the safe choice for point level detection in liquids

Xpert selection

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

Xpert: Master your most challenging applications

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Predecessor

Liquiphant S FDL61

Success stories

Extend SIL proof test intervals with new Liquiphant FTL51

Discover how our customer CABB was able to extend SIL proof test intervals with the new Liquiphant FTL51
Read the full story
Optimized logistics concept for tank systems

We implemented a highly effective logistics concept at chemicals distributors Brenntag Schweizerhall AG's Basel site.
Read the full story
Truck loading - safety solved through trusted partnership

Endress+Hauser provides global chemical and plastics distributor with “total turnkey solution”
Read the full story

Filter

60 spare parts & accessories

Cover F16 grey, PBTP, gasket

further parts

Order code

52025606
Cover F16 transparent, gasket

further parts

Order code

52025790
O-ring 71.0x3.55 EPDM, 5 pieces

further parts

Order code

52004137
Adapter set cable entry NPT1/2

further parts

Order code

52004133
Adapter set cable gland M20

further parts

Order code

52004134
Adapter set cable entry G1/2

further parts

Order code

52004135
Cover F13 Ex Alu, gasket

further parts

Order code

52002698
Cover F17 Alu, gasket

further parts

Order code

52002699
Cover F13/17/18 Alu,sight glass,gasket

further parts

Order code

52027693
Cover F27 316L, gasket EPDM

further parts

Order code

71114754
Cover F27 316L, gasket FVQM

further parts

Order code

71185025
Sealing set EPDM,cover F13/17/18/27,10pc

further parts

Order code

52004277
Sealing set FVQM, cover F27, 3 pc.

further parts

Order code

71114756
Cover F15 316L, gasket

further parts

Order code

52027000
Cover F15 316L, sight glass, gasket

further parts

Order code

52027002
Gasket 67.5x2.9x1.5 VMQ/PTFE, 5 pieces

further parts

Order code

52028179
Cable entry G1/2, gasket

further parts

Order code

52002447
Cable entry NPT1/2, gasket

further parts

Order code

52002448
Cable gland M20, gasket

further parts

Order code

52004278
Cable gland M20 Metal F15, gasket

further parts

Order code

71185029
Cover T13 Alu, gasket EPDM

further parts

Order code

52006903
Cover T13 Alu,Ex d,high,sight glass,gas.

further parts

Order code

52028271
Cover T13 "Terminal" Alu, gasket EPDM

further parts

Order code

52007103
Sealing set EPDM 73.0x3.0, 10 pieces

further parts

Order code

52008495
Electronics FEL85 4-20mA

further parts

Order code

71184994
Electronics FEL85 4-20mA, -50oC

further parts

Order code

71184997
Electronics FEL85 4-20mA, -60oC

further parts

Order code

71194282
Lubricant "SYNTHESO GLEP1" (tube a 8g)

further parts

Order code

52005977
Modification name plate, non Ex

further parts

Order code

71067434
O-ring 21.89x2.62 VMQ, FDA, 5 pcs.

further parts

Order code

52014473
O-ring 21.89x2.62 VMQ, FDA, USP, 3pcs.

further parts

Order code

71086100
O-ring 21.89x2.62 EPDM, FDA, USP, 3 pcs.

further parts

Order code

71140670
Sealing ring G3/4, 27x32, FA, 5 pcs.

further parts

Drawing number

Order code

57

71185027
Sealing ring G1, 33x39 FA, 5 pcs.

further parts

Drawing number

Order code

57

52014048
Sealing ring G1-1/2, 48x55 FA, 5 pcs.

further parts

Drawing number

Order code

57

52014047
Weld-in adapter and correspondig sealings

further parts
O-ring 28.17x3.53 VMQ, FDA, 5 pcs.

further parts

Order code

52014472
O-ring 28.17x3.53 VMQ, FDA, USP, 3 pcs.

further parts

Order code

71086102
O-ring 28.17x3.53 EPDM, FDA, USP, 3 pcs.

further parts

Order code

71140668
Profile gasket 29x36x3.7, FDA, 5 pcs.

further parts

Order code

52014424
Profile gasket 29x36x3.7, FDA, USP, 5pcs

further parts

Order code

71075662
M12-female plug connec., 90deg, 5m cable

Order code

52010285
Cable 4x0,34, box M12, 316L, 90o, L=5m

Order code

52024216
Protection cover F16 housing

Order code

71127760
Weather protection cover F13/F17/F18/F27

Order code

71040497
Sliding sleeve G1, 316L

Order code

52003978
Sliding sleeve G1, 316L, 3.1

Order code

52011888
Sliding sleeve 100bar G1, 316L

Order code

52003663
Sliding sleeve 100bar G1, 316L, 3.1

Order code

52011880
Sliding sleeve 100bar G1, AlloyC22, 3.1

Order code

71118691
Sliding sleeve 100bar G1-1/2, 316L

Order code

52003665
Sliding sleeve 100bar G1-1/2, 316L, 3.1

Order code

52011882
Sliding sleeve G1-1/2, 316L

Order code

52003980
Sliding sleeve G1-1/2, 316L, 3.1

Order code

52011890
Sliding sleeve 100barG1-1/2,AlloyC22,3.1

Order code

71118693
Sliding sleeve NPT1, 316L

Order code

52003979
Sliding sleeve NPT1, 316L, 3.1

Order code

52011889
Sliding sleeve 100bar NPT1, 316L

Order code

52003667
Sliding sleeve 100bar NPT1, 316L, 3.1

Order code

52011881
Sliding sleeve 100bar NPT1, AlloyC22,3.1

Order code

71118694
Sliding sleeve NPT1-1/2, 316L

Order code

52003981
Sliding sleeve NPT1-1/2, 316L, 3.1

Order code

52011891
Sliding sleeve 100bar NPT1-1/2, 316L

Order code

52003669
Sliding sleeve 100bar NPT1-1/2, 316L,3.1

Order code

52011883
Sliding slee.100barNPT1-1/2,AlloyC22,3.1

Order code

71118695
Weld-in adapter G1, d=53, 316L, 3.1

Order code

71093129
Weld-in adapter G1, d=60, 316L

Order code

52001051
Weld-in adapter G1, d=60, 316L, 3.1

Order code

52011896
Weld-in adapter G1, d=53, 316L

Order code

71258358
Weld-in adapter G1, adjustable, 316L

Order code

52001221
Weld-in adapter G1, adjustable,316L, 3.1

Order code

52011898

Language:	English
Version:	04/06/2013
File size:	768.4 KB
File name:	BA01037FEN_0213.pdf

	EN
28/10/2021
19/06/2020
08/11/2019
17/08/2017
30/06/2016

Language:	English
Version:	28/10/2021
File size:	2.9 MB
File name:	TI00426FEN_2321.pdf

Language:	English
Version:	04/06/2013
File size:	678.4 KB
File name:	TI01026FEN_0213.pdf

Language:	English
Version:	04/06/2013
File size:	768.4 KB
File name:	BA01037FEN_0213.pdf

	EN
04/06/2013
16/07/2012

	EN
04/06/2013
16/07/2012

	EN
04/06/2013
16/07/2012

	EN
09/05/2017
31/07/2010
01/05/2008
13/10/2005

VibronicPoint level detectionLiquiphant FTL81

Point level switch for liquids for FailSafe overfill prevention

Specs at a glance

Process temperature

Process pressure absolute / max. overpressure limit

Min. density of medium

Field of application

Benefits

Videos

Xpert selection

Predecessor

Success stories

Extend SIL proof test intervals with new Liquiphant FTL51

Optimized logistics concept for tank systems

Truck loading - safety solved through trusted partnership

Measuring principle

Characteristic / Application

Specialities

Supply / Communication

Ambient temperature

Process temperature

Process pressure absolute / max. overpressure limit

Min. density of medium

Main wetted parts

Process connection

Sensor length

Communication

Certificates / Approvals

Safety approvals

Design approvals

Marine approval

Options

Components

Back

Liquiphant FailSafe FTL80, FTL81, FTL85 Operating Instructions

Weld-in adapter, process adapter and flanges

Liquiphant FailSafe FTL80, FTL81, FTL85 Technical Information

Liquiphant FailSafe FTL80, FTL81, FTL85 Operating Instructions

Liquiphant M/S FTL51, FTL71, FTL81

Liquiphant M/S FTL51, FTL71, FTL81 Operating Instructions

Operating Instuction Liquiphant FTL 51, FTL71, FTL81 Sliding Sleeve

Operating Instuction Liquiphant M FTL 51, FTL71, FTL81

Cover for housing T13 electronic compartment with sight glas Installation instruction

Cover for housing F13 Installation instruction

Cover for housing T13 electronic compartment Installation instruction

Back

Cover F16 grey, PBTP, gasket

Cover F16 transparent, gasket

O-ring 71.0x3.55 EPDM, 5 pieces

Adapter set cable entry NPT1/2

Adapter set cable gland M20

Adapter set cable entry G1/2

Cover F13 Ex Alu, gasket

Cover F17 Alu, gasket

Cover F13/17/18 Alu,sight glass,gasket

Cover F27 316L, gasket EPDM

Cover F27 316L, gasket FVQM

Sealing set EPDM,cover F13/17/18/27,10pc

Sealing set FVQM, cover F27, 3 pc.

Cover F15 316L, gasket

Cover F15 316L, sight glass, gasket

Gasket 67.5x2.9x1.5 VMQ/PTFE, 5 pieces

Cable entry G1/2, gasket

Cable entry NPT1/2, gasket

Cable gland M20, gasket

Cable gland M20 Metal F15, gasket

Cover T13 Alu, gasket EPDM

Cover T13 Alu,Ex d,high,sight glass,gas.

Cover T13 "Terminal" Alu, gasket EPDM

Sealing set EPDM 73.0x3.0, 10 pieces

Electronics FEL85 4-20mA

Electronics FEL85 4-20mA, -50oC

Electronics FEL85 4-20mA, -60oC

Lubricant "SYNTHESO GLEP1" (tube a 8g)

Modification name plate, non Ex

O-ring 21.89x2.62 VMQ, FDA, 5 pcs.

O-ring 21.89x2.62 VMQ, FDA, USP, 3pcs.

O-ring 21.89x2.62 EPDM, FDA, USP, 3 pcs.

Sealing ring G3/4, 27x32, FA, 5 pcs.

Sealing ring G1, 33x39 FA, 5 pcs.

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Point level detection
Liquiphant FTL81

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Point level detection
Nivotester FailSafe FTL825