 
                  Specs at a glance
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                              Process temperature-50 °C...+150 °C 
 (-58 °F...+302 °F)
 up to 230 °C / 450°F on request
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                              Process pressure / max. overpressure limitVacuum...40 bar 
 (Vacuum...580 psi)
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                              Min. density of medium0.5g/cm³ (0.4g/cm³ optional) 
Field of application
Liquiphant FTL51C is a point level switch with extension tube and highly corrosion resistant coating. For use in hazardous areas with all international certificates. Useable in all industries. FTL51 offers functional safety SIL2/SIL3. With the second line of defense 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 with highly corrosion-resistant coating.
- Process connections: Flanges and hygienic process connection (FDA conform with PFA) 
- Temperature: -50 to +150°C (-58 to +302°F) 
- Pressure: -1 to +40bar (-14.5 to +580psi) 
- Sensor material: ECTFE, PFA (Edlon, Rubyred, conductive), Enamel 
- International explosion protection certificates, overfill protection WHG, SIL, hygienic certificates, marine approvals 
Benefits
- Use in safety systems requiring functional safety to SIL2/SIL3 in accordance with 
 IEC 61508/IEC 61511-1
- Different plastic coating (PFA) and enamel coating for applications with aggressive medias 
- International 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 function
- Second line of defense to protect the environment 
- Variety of standardized process connections for all applications 
Videos
Extended selection
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        High-end products 
- Highly functional and convenient
Technical excellence
Simplicity
 
                              - 
        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 FTL51C Technical InformationPoint level switch for all kinds of liquids 
 with high corrosion-resistant coatingEN 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)
 Technical Information Liquiphant M Density and Density Computer FML621Density computer for liquids 
 Also for use in hazardous areasEN 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 PAVibration Limit Switch 
 Level limit switch for all liquids.
 Suitable for use in hazardous areas, food and pharmaceuticalsEN 10/08/2004Language: English Version: 10/08/2004 File size: 836 KB File name: BA141FEN.pdf 
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                                                            Short Instruction (KA)
 FTL5x - Exchange of housing F13Liquiphant FTL5x - Exchange of housing F13 EN 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)
 Exchange of sensor on Liquiphant M/SExchange of sensor on Liquiphant M/S EN 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 InstructionsPoint level switch for all kinds of liquids EN 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)
 FTL5x - sealing setFTL5x - sealing set EN 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)
 Bedienungsanleitung/ Operating Instuction Liquiphant.Sliding Sleeve EN 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)
 Liquiphant M Density FTL51C Operating InstructionsLiquiphant M for density and concentration calculation EN 29/06/201615/11/2007Language: English Version: 29/06/2016 File size: 905.3 KB File name: KA00286FA6_1316.pdf 
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                                                            Short Instruction (KA)
 FTL5x - exchange Alu housing F17Liquiphant M FTL5x - exchange Alu housing F17 EN 15/04/2021Language: English Version: 15/04/2021 File size: 254.1 KB File name: KA00534F00_A2.pdf 
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