
Specs at a glance
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Process temperature
-50 °C...+150 °C
(-58 °F...+302 °F) -
Process pressure / max. overpressure limit
Vacuum...64 bar
(Vacuum...928 psi) -
Min. density of medium
0.5g/cm³(0.4g/cm³ option)
Field of application
Liquiphant FTL50 is a point level switch for use in hazardous areas with all international certificates. Useable in all industries. FTL50 offers functional safety SIL2/SIL3. With the second line of defense the highest degree of safety and availability of the device can be guaranteed. Reliable measurement values, not affected by: changing media properties, flow, turbulences, gas bubbles, foam, vibrations or build-up.
Point level switch for all liquids.
Process connections: Threads, flanges and hygienic process connection (Tri-Clamp)
Temperature: -50 to +150°C (-58 to +302°F)
Pressure: -1 to +64bar (-14.5 to +928psi)
Sensor material: 316L, Alloy
International explosion protection certificates, overfill protection WHG, SIL, marine approvals
Benefits
Use in safety systems requiring functional safety to SIL2/SIL3 in accordance with
IEC 61508/IEC 61511-1International explosion protection certificates and overfill protection certificate (WHG)
No calibration required, easy to start up
No mechanically moving parts: no maintenance, no wear, long operating life.
Monitoring of fork for damage: guaranteed functionSecond line of defense to protect the environment
Variety of standardized process connections for all applications
Stainless steel (316L) and high-corrosion resistant sensor material (Alloy)
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
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Technical Information (TI)
Liquiphant M FTL50, FTL51, FTL50H, FTL51H Technical Information
English version - 01/2020
Point level switch for all kinds of liquids
EN More 10/01/202009/10/201730/11/201607/05/201504/04/2012Language:
English
Version:
10/01/2020
File size:
2.7 MB
File name:
TI00328FEN_1820.pdf
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Operating Instruction (BA)
Liquiphant M/S FTL50, FTL51, FTL50H, FTL51H, FTL51C, FTL70, FTL71 Electronic insert FEL50A PA
English version - 08/2004
Vibration Limit Switch Level limit switch for all liquids. Suitable for use in hazardous areas, food and pharmaceuticals
EN More 10/08/2004Language:
English
Version:
10/08/2004
File size:
836 KB
File name:
BA141FEN.pdf
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Technical Information (TI)
TI Weld-in adapter, process adapter and flanges
Level, pressure and temperature measurement
EN Select other language 06/12/202425/03/202415/09/202328/10/202130/07/2021Language:
English
Version:
06/12/2024
File size:
1.3 MB
File name:
TI00426FEN_2624.pdf
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Technical Information (TI)
Liquiphant M FTL51C Technical Information
Point level switch for all kinds of liquids
with high corrosion-resistant coatingEN Select other language 31/08/201813/02/201719/05/201029/11/2007Language:
English
Version:
31/08/2018
File size:
2 MB
File name:
TI00347FEN_1418.pdf
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Technical Information (TI)
Liquiphant M FTL50, FTL51, FTL50H, FTL51H Technical Information
Point level switch for all kinds of liquids
EN Select other language 10/01/202009/10/201730/11/201607/05/201504/04/2012Language:
English
Version:
10/01/2020
File size:
2.7 MB
File name:
TI00328FEN_1820.pdf
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Technical Information (TI)
Technical Information Liquiphant M Density and Density Computer FML621
Density computer for liquids
Also for use in hazardous areasEN Select other language 08/10/201212/02/200929/11/2007Language:
English
Version:
08/10/2012
File size:
800.4 KB
File name:
TI00420FEN_1312.pdf
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Operating Instruction (BA)
Liquiphant M/S FTL50, FTL51, FTL50H, FTL51H, FTL51C, FTL70, FTL71 Electronic insert FEL50A PA
Vibration Limit Switch
Level limit switch for all liquids.
Suitable for use in hazardous areas, food and pharmaceuticalsEN Select other language 10/08/2004Language:
English
Version:
10/08/2004
File size:
836 KB
File name:
BA141FEN.pdf
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Short Instruction (KA)
Bedienungsanleitung/ Operating Instuction Liquiphant.
Sliding Sleeve
EN Select other language 01/05/200801/11/1998Language:
English
Version:
01/05/2008
File size:
314.8 KB
File name:
KA100fa6_0308.pdf
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Short Instruction (KA)
FTL5x - sealing set
FTL5x - sealing set
EN Select other language 03/05/2021Language:
English
Version:
03/05/2021
File size:
63.3 KB
File name:
KA00609F_A2.pdf
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Short Instruction (KA)
Exchange of sensor on Liquiphant M/S
Exchange of sensor on Liquiphant M/S
EN Select other language 24/04/2012Language:
English
Version:
24/04/2012
File size:
398.2 KB
File name:
KA00529FA2_0908.pdf
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Short Instruction (KA)
Liquiphant M FTL50, FTL51 Operating Instructions
Point level switch for all kinds of liquids
EN Select other language 20/01/201729/06/201618/04/200601/04/2006Language:
English
Version:
20/01/2017
File size:
982.5 KB
File name:
KA00143FA6_1417.pdf
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Short Instruction (KA)
Liquiphant M Density FTL50, FTL51 Operating Instructions
Liquiphant M for density and concentration calculation
EN Select other language 29/06/201615/11/2007Language:
English
Version:
29/06/2016
File size:
999.4 KB
File name:
KA00284FA6_1316.pdf
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Short Instruction (KA)
FTL5x - Exchange of housing F13
Liquiphant FTL5x - Exchange of housing F13
EN Select other language 15/04/2021Language:
English
Version:
15/04/2021
File size:
232.8 KB
File name:
KA00531F00_A2.pdf
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Short Instruction (KA)
Liquiphant M FTL50-########7#, FTL51-########7#, Operating Instructions
Point level switch for all liquids.
Suitable for use in hazardous areas, food and pharmaceuticals
With Aluminium HousingEN Select other language 20/01/201729/06/201631/07/201018/04/200606/07/2004Language:
English
Version:
20/01/2017
File size:
1.8 MB
File name:
KA00163FA6_1417.pdf
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Short Instruction (KA)
Bedienungsanleitung/ Operating Instuctions Liquiphant M/S + FEL57
Selbsttest
Self testEN Select other language 27/02/201701/03/2002Language:
English
Version:
27/02/2017
File size:
227.1 KB
File name:
KA00147FA6_1316.pdf
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Short Instruction (KA)
FTL5x - exchange of Polyester housing F16
Liquiphant FTL5x exchange of Polyester housing F16
EN Select other language 15/04/2021Language:
English
Version:
15/04/2021
File size:
344.2 KB
File name:
KA00533F00_A2.pdf
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Short Instruction (KA)
FTL5x - exchange Alu housing F17
Liquiphant M FTL5x - exchange Alu housing F17
EN Select other language 15/04/2021Language:
English
Version:
15/04/2021
File size:
254.1 KB
File name:
KA00534F00_A2.pdf
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Short Instruction (KA)
Liquiphant M FTL50,FTL51, FTL50H, FTL51H Operating Instructions
Point Level Switch with compact housing
EN Select other language 29/06/201601/01/2006Language:
English
Version:
29/06/2016
File size:
770.2 KB
File name:
KA00220FA6_1316.pdf
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Installation Instructions (EA)
Cover for housing T13 terminal compartment Installation instruction
Liquiphant M/S, Soliphant M, Liquicap M, Solicap M/S
EN Select other language 24/02/202215/08/201409/08/2012Language:
English
Version:
24/02/2022
File size:
119 KB
File name:
EA01050FA2_0322.pdf
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Installation Instructions (EA)
EA Fork protection Marine application
Liquiphant
EN Select other language 30/09/202431/01/2024Language:
English
Version:
30/09/2024
File size:
486.8 KB
File name:
EA01463FEN_0224-00.pdf
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Installation Instructions (EA)
Cover for housing T13 electronic compartment Installation instruction
Liquiphant M/S, Soliphant M, Liquicap M, Solicap M/S
EN Select other language 11/08/201409/08/2012Language:
English
Version:
11/08/2014
File size:
164.3 KB
File name:
EA01048FA2_0214.pdf
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Installation Instructions (EA)
Cover for housing F13 Installation instruction
Liquiphant M/S, Soliphant M, Liquicap M, Solicap M/S
EN Select other language 11/08/201409/08/2012Language:
English
Version:
11/08/2014
File size:
134.4 KB
File name:
EA01046FA2_0214.pdf
-
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Installation Instructions (EA)
Cover for housing F27 Installation instruction
Liquihant M/S, Soliphant M, Liquicap M, Solicap M/S
EN Select other language 11/08/201416/01/201409/08/2012Language:
English
Version:
11/08/2014
File size:
136.4 KB
File name:
EA01047FA2_0314.pdf
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-
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Installation Instructions (EA)
Diagnostics plug Installation instruction
Liquiphant M/S/FailSafe, Soliphant T/M
EN Select other language 24/04/201511/10/2012Language:
English
Version:
24/04/2015
File size:
71.5 KB
File name:
EA01063FA2_0215.pdf
-
-
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Installation Instructions (EA)
Cover for housing T13 electronic compartment with sight glas Installation instruction
Liquicap M, Solicap M, Liquphant M/S/FailSafe, Soliphant M
EN Select other language 09/08/2012Language:
English
Version:
09/08/2012
File size:
158.7 KB
File name:
EA01049FA2_01.12.pdf
-
-
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Installation Instructions (EA)
Cover for Housing F17 Installation instruction
LIquiphant M/S/Fail Safe, Soliphant M
EN Select other language 11/08/201412/07/2012Language:
English
Version:
11/08/2014
File size:
144.8 KB
File name:
EA01036FA2_0214.pdf
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Installation Instructions (EA)
Cover for Housing F16 Installation instruction
LIquiphant M/S/Fail Safe, Soliphant M
EN Select other language 12/07/2012Language:
English
Version:
12/07/2012
File size:
103.1 KB
File name:
EA01035FA2_0112.pdf
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Installation Instructions (EA)
Cover for Housing F15 Installation instruction
LIquiphant M/S/Fail Safe, Soliphant M, Cerabar M, Deltapilot M
EN Select other language 11/08/201412/07/2012Language:
English
Version:
11/08/2014
File size:
142.9 KB
File name:
EA01034FA2_0214.pdf
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Ex Safety Instruction (XA)
Liquiphant M, Liquiphant S FTL50(H), FTL51(H), FTL51C, FTL70/71
Ex db IICT6...T3 Ga/Gb
Ex db IIB T6...T3 Ga/Gb
Ex db IIC T6...T1 Ga/GbEN Select other language 09/06/202218/10/202120/11/201612/03/201201/07/2009Language:
English
Version:
09/06/2022
File size:
754.5 KB
File name:
XA00401FEN_1622-00.pdf
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Ex Safety Instruction (XA)
Liquiphant M/S FTL50(H), FTL51(H), FTL51C, FTL70, FTL71
Approval No.: NEPSI GYJ06464 (FTL50/51(H)) / NEPSI GYJ05557
(FTL51C) /
NEPSI GYJ05558 (FTL7x)
Protection:
Ex ia IIC T3...T6
Ex ia IIC T2...T6
Ex ia IIB T3...T6EN Select other language 01/12/200901/07/200901/01/200701/04/2006Language:
English
Version:
01/12/2009
File size:
814.9 KB
File name:
XC009FB2_1209.pdf
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Ex Safety Instruction (XA)
Liquiphant M/S FTL50(H), FTL51(H), FTL51C, FTL70, FTL71
Approval No.: NEPSI GYJ091298, NEPSI GYJ071414 (FTL5x(H), FTL51C) /
NEPSI GYJ091299, NEPSI GYJ071415 (FTL7x)
Protection:
Ex nA II T3...T6, Ex nC/nL IIC T3...T6 (FTL5x(H), FTL51C) / Ex nA II
T2...T6, Ex nC/nL IIC T2...T6 (FTL7x)EN Select other language 01/12/200901/07/200901/11/200701/04/200701/04/2006Language:
English
Version:
01/12/2009
File size:
809.6 KB
File name:
XC010FB2_1209.pdf
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Ex Safety Instruction (XA)
Liquiphant M FTL50(H), FTL51(H), FTL51C
Approval No.: NEPSI GYJ03102
Protection:
Ex de IIC T3...T6
Ex de IIB T3...T6EN Select other language 01/04/2006Language:
English
Version:
01/04/2006
File size:
758.5 KB
File name:
XC008FB2.pdf
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Ex Safety Instruction (XA)
Liquiphant M, Liquiphant S FTL50(H), FTL51(H), FTL51C, FTL70, FTL71
Approval No.: KEMA 02 ATEX 2169
ATEX II 1/2 G
Protection:
EEx de IIC T2...T6
EEx de IIB T3...T6EN Select other language 01/06/200701/01/2004Language:
English
Version:
01/06/2007
File size:
985.7 KB
File name:
XA200FA3_0607.pdf
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Ex Safety Instruction (XA)
XA Liquiphant M FTL50(H), FTL51(H)
II 3 G Ex ec IIC Gc
II 3 G Ex ec nC IIC Gc
II 3 G Ex ic IIC Gc
II 3 D Ex tc IIIC DcEN 04/09/202313/12/2021Language:
English
Version:
04/09/2023
File size:
514.5 KB
File name:
XA02798FEN_0223-00.pdf
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Ex Safety Instruction (XA)
Liquiphant M FTL50, FTL50H, FTL51, FTL51H
0Ex ia IIC T6...T3 Ga X
EN Select other language 05/07/202214/03/202230/04/201822/08/2017Language:
English
Version:
05/07/2022
File size:
484.7 KB
File name:
XA01406FEN_0522-00.pdf
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-
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Ex Safety Instruction (XA)
Liquiphant M, Liquiphant S FTL50(H), FTL51(H), FTL51C, FTL70/71
0/1 Ex iaIIC T6...T3 Ga/Gb X
0/1 Ex db ia IIC T6...T2 Ga/Gb X
Ex ia IIIC T<sub>L</sub>80°C T<sub>200
</sub>xxx°C Da/Db XEN Select other language 05/07/202214/03/202230/04/201822/08/2017Language:
English
Version:
05/07/2022
File size:
596.6 KB
File name:
XA01372FEN_0622-00.pdf
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Ex Safety Instruction (XA)
Safety Instructions Liquiphant M/S FTL50/51(H), FTL51C, FTL70/71
Ex d IIC/IIB T3...T6 Ga/Gb
Ex d IIC T2...T6 Ga/Gb
TÜV 13.0900 X (INMETRO)EN Select other language 03/02/2014Language:
English
Version:
03/02/2014
File size:
146.7 KB
File name:
XA01039FEN_0112.pdf
-
-
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Ex Safety Instruction (XA)
Safety Instructions Liquiphant M/S FTL50/51(H), FTL51C, FTL70/71
Ex ia IIC/IIB T3...T6 Ga/Gb
Ex ia IIC T2...T6 Ga/Gb
Ex ia IIIC T80°C Da/Db
TÜV 13.0898 X (INMETRO)EN Select other language 03/02/2014Language:
English
Version:
03/02/2014
File size:
152.4 KB
File name:
XA01255FEN_0113.pdf
-
-
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Ex Safety Instruction (XA)
Safety Instructions Liquiphant M/S FTL50/51(H), FTL51C, FTL70/71
Ex de IIC/IIB T3...T6 Ga/Gb
Ex de IIC T2...T6 Ga/Gb
TÜV 13.0895 X (INMETRO)EN Select other language 03/02/2014Language:
English
Version:
03/02/2014
File size:
146.6 KB
File name:
XA01044FEN_0112.pdf
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Ex Safety Instruction (XA)
Liquiphant M, Liquiphant S FTL50(H), FTL51(H), FTL51C, FTL70, FTL71
Approval No.: KEMA 99 ATEX 0523
ATEX II 1/2 G
Protection:
EEx ia/ib IIC T2...T6
EEx ia/ib IIB T3...T6EN Select other language 01/03/2005Language:
English
Version:
01/03/2005
File size:
382.1 KB
File name:
XA340Fa3.pdf
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-
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Ex Safety Instruction (XA)
Liquiphant M FTL50, FTL50H, FTL51, FTL51H
II 1 G Ex ia IIC Ga
Language:
English
Version:
11/10/2021
File size:
484.2 KB
File name:
XA02737FEN_0121-00.pdf
-
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Ex Safety Instruction (XA)
Liquiphant M, Liquiphant S FTL50(H), FTL51(H), FTL51C, FTL70/71
ATEX, IECEx:
Ex ia IIC Ga/Gb
Ex db ia IIC Ga/Gb
Ex ia IIIC Da/DbEN Select other language 30/08/202112/12/201605/04/201613/12/201001/01/2009Language:
English
Version:
30/08/2021
File size:
597 KB
File name:
XA00063FEN_1621.pdf
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