Specs at a glance
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Process temperature
-40 °C ... 150 °C
(-40 °F ... 302 °F) -
Process pressure / max. overpressure limit
Vacuum ... 40 bar
(Vacuum ... 580 psi) -
Min. density of medium
>0,7g/cm³
(>0,5g/cm³ optional)
Field of application
Liquiphant FTL31 is a point level switch for liquids. The FTL31 is designed for industrial applications in all industries, mainly the machinery industry. The Liquiphant is used for overfill protection or pump dry-run protection in cleaning systems. The IO-Link capability allows easy parameter setting.
Compact:
- Smallest vibronic sensor in the market
Safe:
- Continuous self-monitoring
-Reliable switching independent of media properties
Easy:
- No calibration
- Plug & play
- IO-Link connectivity
Point level switch in compact design with stainless steel housing.
Process connections: Threads
Temperature: -40 to +150°C (-40 to +302°F)
Pressure: -1 to +40bar (-14.5 to 580psi)
Surface roughness: 3.2µm
Overfill protection and leakage detection WHG, marine approvals, final inspection report
Benefits
Designed according to highest requirements to quality and environmental sustainability. The self-monitoring Liquiphant offers safe switching also in case of power supply loss.
Independent of changing media properties an accurate switching point is offered. IO-Link reduces costs and complexity due to easy configuration of the devices via engineering tools
A real plug & play sensor is offered without any need for adjustment even with changing media. Measurement is unaffected by conductivity, build-up, turbulence, flows or air bubbles
No calibration is required, no specific know-how or tools (e.g. software) necessary
Robust design made of stainless steel (316L) assures highest durability
A modular design offers different process temperatures and the widest variety of process connections and accessories in the market to fit every application
No mechanically moved parts, free of maintenance
Videos
Fundamental selection
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Simple products
- Easy to select, install and operate
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 |
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Predecessor
Success stories
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Technical Information (TI)
Liquiphant FTL31
English version - 07/2022
Vibronic
EN 12/07/202226/01/202130/05/201630/09/2014Language:
English
Version:
12/07/2022
File size:
1.2 MB
File name:
TI01147FEN_0522-00.pdf
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Operating Instruction (BA)
Liquiphant FTL31
English version - 07/2022
Point level switch for liquids
EN 12/07/202215/05/201530/09/201429/09/2014Language:
English
Version:
12/07/2022
File size:
1.1 MB
File name:
BA01285FEN_0322-00.pdf
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56 documents
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Technical Information (TI)
TI Weld-in adapter, process adapter and flanges
Level, pressure and temperature measurement
EN 06/12/202425/03/202415/09/202328/10/202130/07/2021Language:
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Version:
06/12/2024
File size:
1.3 MB
File name:
TI00426FEN_2624.pdf
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Technical Information (TI)
Liquiphant FTL31 IO-Link
Point level switch for liquids
EN 25/01/202103/12/2018Language:
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Version:
25/01/2021
File size:
1.2 MB
File name:
TI01433FEN_0221.pdf
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Technical Information (TI)
Liquiphant FTL31
Vibronic
EN 12/07/202226/01/202130/05/201630/09/2014Language:
English
Version:
12/07/2022
File size:
1.2 MB
File name:
TI01147FEN_0522-00.pdf
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Operating Instruction (BA)
Liquiphant FTL31 IO-Link
Point level switch for liquids
EN 05/10/202021/12/201803/12/2018Language:
English
Version:
05/10/2020
File size:
1.4 MB
File name:
BA01935FEN_0320.pdf
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Operating Instruction (BA)
Liquiphant FTL31
Point level switch for liquids
EN 12/07/202215/05/201530/09/201429/09/2014Language:
English
Version:
12/07/2022
File size:
1.1 MB
File name:
BA01285FEN_0322-00.pdf
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Short Instruction (KA)
KA Liquiphant FTL31
Level switch for liquids
EN 02/08/202401/05/2022Language:
English
Version:
02/08/2024
File size:
355 KB
File name:
KA01582FEN_0224-00.pdf
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Short Instruction (KA)
KA Liquiphant FTL31
Level switch for liquids
IO-LinkEN 02/08/202403/10/2022Language:
English
Version:
02/08/2024
File size:
345.8 KB
File name:
KA01618FEN_0224-00.pdf
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ZE (Certificate)
Liquiphant FTL31, FTL33
Allgemeine bauaufsichtliche Zulassung /
Allgemeine Bauartzulassung Z-65.40-532 (DIBt) für Liquiphant
LeckageEN 22/07/201917/09/2014Language:
German
Version:
22/07/2019
File size:
1.5 MB
File name:
ZE01011FDE_0219.pdf
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ZE (Certificate)
Liquiphant FTL31, FTL33
Allgemeine bauaufsichtliche Zulassung /
Allgemeine Bauartzulassung Z-65.11-531 (DIBt) für LiquiphantEN 22/07/201917/09/2014Language:
German
Version:
22/07/2019
File size:
1.5 MB
File name:
ZE01010FDE_0219.pdf
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Special Documentation (SD)
Valve plug
Valve plug
EN 24/03/201604/07/2012Language:
English
Version:
24/03/2016
File size:
63.1 KB
File name:
SD00356FEN_0216.pdf
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Special Documentation (SD)
SD M12 socket
Accessories for devices with M12 plug
EN 09/01/202530/06/202329/05/2020Language:
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Version:
09/01/2025
File size:
296.1 KB
File name:
SD02586FEN_0325-00.pdf
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Special Documentation (SD)
SD Endress+Hauser IO-Link devices
Endress+Hauser IO-Link function blocks
For Siemens TIA PortalEN 01/12/2024Language:
English
Version:
01/12/2024
File size:
4.2 MB
File name:
SD03368SEN_0124-00.pdf
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Special Documentation (SD)
Mounting hints for weld-in adapter Level and pressure measurement Special Documentation
Mounting hints for weld-in adapter
EN 28/04/2018Language:
English
Version:
28/04/2018
File size:
294.2 KB
File name:
SD01622PA3_0218.pdf
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Fields of Activities (FA)
Level measurement
Product overview for applications in liquids and bulk solids
Language:
English
Version:
29/09/2025
File size:
48.9 MB
File name:
FA00001F00EN2625.pdf
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Fields of Activities (FA)
Misura di livello
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Panoramica dei prodotti per applicazioni in liquidi e solidi sfusiLanguage:
Italian
Version:
03/03/2023
File size:
46.9 MB
File name:
FA00001F00IT2522.pdf
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Fields of Activities (FA)
Füllstandsmesstechnik
Produktübersicht für Anwendungen in Flüssigkeiten und Schüttgütern
Language:
German
Version:
14/10/2022
File size:
10.6 MB
File name:
FA00001F00DE2522.pdf
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Fields of Activities (FA)
Catálogo Medición y Detección de nivel
Gama de productos para aplicaciones con líquidos y sólidos
Language:
Spanish
Version:
01/06/2022
File size:
7.2 MB
File name:
FA00001Fes Catalogo Nivel_24.22.pdf
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Competence Brochure (CP)
Grenzstanddetektion in Flüssigkeiten und Schüttgütern
Auswahl- und Projektierungshilfe
Language:
German
Version:
19/02/2025
File size:
13.5 MB
File name:
CP00007F00DE1925.pdf
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Competence Brochure (CP)
Point level detection in liquids and bulk solids
Selection and engineering guide
Language:
English
Version:
19/02/2025
File size:
13.4 MB
File name:
CP00007F00EN1925.pdf
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Competence Brochure (CP)
Catálogo soluciones esenciales
Alta calidad a precios competitivos
Language:
Spanish
Version:
16/01/2017
File size:
8.9 MB
File name:
CP01266Z.pdf
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Case Study (CS)
Engineering support bolsters innovative shipping technology
Silverstream Technologies' system cuts emissions and fuel costs
Language:
English
Version:
23/11/2021
File size:
555.8 KB
File name:
CS01724F Silverstream (updated).pdf
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Case Study (CS)
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Mahou-San Miguel asegura su detección con Endress+Hauser
Language:
Spanish
Version:
26/05/2016
File size:
177.3 KB
File name:
CS01490Fes_MAHOU_FTL31_MolinoMalta_v01.16.pdf
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White paper (WP)
The challenge and solution, inventory Management of NGLs in 1.3m x 500m horizontal vessels
White Paper - As presented at the Canadian School of hydrocarbon
measurement
calgary 2018Language:
English
Version:
30/05/2018
File size:
5 MB
File name:
WP01082S00EN0118.pdf
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White paper (WP)
Ease instrument commissioning and enhance maintenance with IO-Link
Empowered with simple configuration, cost-effective
implementation, and comprehensive diagnostics,
plant personnel — especially in the food & beverage
industry — are leveraging IO-Link-enabled digital
instruments and sensors to create insightsLanguage:
English
Version:
31/01/2024
File size:
2.9 MB
File name:
WP01201B24EN012400 - PlantServices-RemoteMonitor.pdf
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Manufacturer Declaration
Product family: Liquiphant
Product root: FTL31-
Declaration number: HE_00266_03.24
Manufacturer specification: Food hygiene, 10/2011, 1935/2004EN 16/02/2024Language:
English
Version:
16/02/2024
File size:
266.3 KB
File name:
HE_00266_03.24.pdf
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Manufacturer Declaration
Product family: Cerabar, Cerabar M, Cerabar S, Ceraphant, Deltabar, Deltabar M, Deltabar S, Deltapilot M, Fieldgate, Gammapilot, Lev elflex, Liquicap M, Liquicap T, Liquiphant, Liquiphant FailSafe, Liquiphant M, Liquipoint, Liquipoint T, Liquitrend, Micropilot, Mic ropilot S, Minicap, Fermentation monitor, Prosonic M, Prosonic S, Prosonic T, Solicap M, Solicap S, Soliphant M, Soliphant T, Spare parts level, Strahlenschutzbehälter, System & Gauging, Tankvision, Waterpilot
Product root: FDU90-, FDU91-, FDU91F-, FDU92-, FDU93-, FDU95-, FHX40-, FHX50-, FHX50B-, FMB50-, FMB51-, FMB52-, FMB53-, FMD71-, FMD7
2-, FMD77-, FMD78-, FMG50-, FMI21-, FMI51-, FMI52-, FMP50-, FMP51-, FMP52-, FMP53-, FMP54-, FMP55-, FMP56-, FMP57-, FMR10-, FMR10B-,
FMR20-, FMR20B-, FMR30B-, FMR43-, FMR50-, FMR51-, FMR52-, FMR53-, FMR532-, FMR54-, FMR540-, FMR56-, FMR57-, FMR60B-, FMR62B-, FMR63
B-, FMR66B-, FMR67B-, FMU30-, FMU40-, FMU41-, FMU42-, FMU44-, FMX11-, FMX21-, FTC260-, FTC262-, FTI51-, FTI52-, FTI55-, FTI56-, FTI7
7-, FTL31-, FTL33-, FTL41-, FTL43-, FTL50H-, FTL51B-, FTL51H-, FTL62-, FTL63-, FTL64-, FTL80-, FTL81-, FTL85-, FTM20-, FTM21-, FTM50
-, FTM51-, FTM52-, FTW23-, FTW31-, FTW32-, FTW33-, FWR30-, NMR81-, NMR84-, NMS80-, NMS81-, NMS83-, NMT532-, NMT539-EN 14/03/2025Language:
English
Version:
14/03/2025
File size:
623.3 KB
File name:
HE_02099_01.25.pdf
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Manufacturer Declaration
Product family: Cerabar, Cerabar M, Cerabar S, Ceraphant, Deltabar, Deltabar S, Deltapilot M, Deltapilot S, Liquiphant, Liquiphant M , Soliphant M
Product root: FMB50-, FMB70-, FMD71-, FMD72-, FMD78-, FTL31-, FTL33-, FTL43-, FTL50H-, FTL51H-, FTL63-, FTM50-, FTM51-, PMC21-, PMC5
1B-, PMC71B-, PMD55B-, PMD75B-, PMD78B-, PMP21-, PMP23-, PMP43-, PMP51B-, PMP55-, PMP71B-, PMP75-, PTC31B-, PTP33B-
Declaration number: HE_02158_01.25
Manufacturer specification: Food hygieneLanguage:
English
Version:
06/06/2025
File size:
404.6 KB
File name:
HE_02158_01.25.pdf
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Manufacturer Declaration
Product family: Liquiphant
Product root: FTL31-
Declaration number: HE_00819_01.17
Manufacturer specification: RoHS
Additional information: China-RoHSLanguage:
Chinese
Version:
25/08/2017
File size:
139.2 KB
File name:
HE_00819_01.17_China-RoHS_OFTL31.pdf
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Manufacturer Declaration
Product family: Liquiphant, Stabsonde
Product root: FTL31-
Declaration number: HE_01923_01.24
Manufacturer specification: Performance characteristicsEN 04/06/2024Language:
English
Version:
04/06/2024
File size:
198.7 KB
File name:
HE_01923_01.24.pdf
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Manufacturer Declaration
Product family: Liquiphant, Liquipoint, Liquitrend
Product root: FTL31-, FTL33-, FTW23-, QMW43-
Declaration number: HE_01588_01.22
Manufacturer specification: 1935/2004Language:
English
Version:
14/03/2022
File size:
2.3 MB
File name:
HE_01588_01.22 1935_2004 Weld in adapter 71258357 52028295.pdf
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