Liquiphant FTL31 - Vibronic point level detection

Vibronic
Point level detection
Liquiphant FTL31

Point level switch for liquids in compact design with stainless steel housing

FTL31

Compare

5-year warranty

Engineered for Confidence

Our Fundamental Selection instruments feature an extended 5-year warranty – a clear testament of our trust in their long-term reliability and performance.

Should a warranty case occur, you can count on a fast replacement process and minimal administrative effort – giving you peace of mind when it matters most and helping you keep your operations running smoothly.

Warranty terms apply

The extended warranty is subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Specs at a glance

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)

See all specifications

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

Liquiphant, Liquipoint, Cerabar, Ceraphant - A strong team for standard level and pressure applications
Vibronic measuring principle
Liquiphant with permanent function check is the safe choice for point level detection in liquids

IO-Link communication

IO-Link communication helps to digitalize your plant
- More information

Fundamental selection

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

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

Loading alternative products

Predecessor

Liquiphant T FTL260

Success stories

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
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
Truck loading - safety solved through trusted partnership

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

Measuring principle

Vibration Liquids
Characteristic / Application

Level switch for liquids and is used in tanks, vessels
and pipes.
Supply / Communication

20 ... 253V AC/DC, 2-wire
10 ... 30V DC-PNP 3-wire
Ambient temperature

-40 °C ... 70 °C
(-40 °F ... 158 °F)
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)
Main wetted parts

316L
Process connection

Threads:
G1/2, G3/4, G1, MNPT1/2, MNPT3/4, MNPT1, R1/2, R3/4, R1
Communication

AC/DC, DC-PNP
Certificates / Approvals

CSA C/US, EAC
Safety approvals

Overfill protection WHG
Leakage
Design approvals

EN 10204-3.1
Marine approval

ABS/ LR/ BV/ DNV
Options

Adjustment switching delay
Cleaned from oil+grease,
PWIS free

We value your privacy

We use cookies to enhance your browsing experience, collect statistics to optimize site functionality, and deliver tailored advertisements or content.

By selecting "Accept all", you consent to our use of cookies.
For further details please review our cookie policy .

	EN
12/07/2022
26/01/2021
30/05/2016
30/09/2014

Language:	English
Version:	12/07/2022
File size:	1.2 MB
File name:	TI01147FEN_0522-00.pdf

	EN
12/07/2022
15/05/2015
30/09/2014
29/09/2014

Language:	English
Version:	12/07/2022
File size:	1.1 MB
File name:	BA01285FEN_0322-00.pdf

	EN
06/12/2024
25/03/2024
15/09/2023
28/10/2021
30/07/2021

Language:	German
Version:	22/07/2019
File size:	1.5 MB
File name:	ZE01011FDE_0219.pdf

	EN
25/01/2021
03/12/2018

	EN
05/10/2020
21/12/2018
03/12/2018

	EN
02/08/2024
01/05/2022

	EN
02/08/2024
03/10/2022

VibronicPoint level detectionLiquiphant FTL31

Point level switch for liquids in compact design with stainless steel housing

Specs at a glance

Process temperature

Process pressure / max. overpressure limit

Min. density of medium

Field of application

Benefits

Videos

IO-Link communication

Fundamental selection

Predecessor

Success stories

Optimized logistics concept for tank systems

Extend SIL proof test intervals with new Liquiphant FTL51

Truck loading - safety solved through trusted partnership

Measuring principle

Characteristic / Application

Supply / Communication

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Min. density of medium

Main wetted parts

Process connection

Communication

Certificates / Approvals

Safety approvals

Design approvals

Marine approval

Options

Back

Liquiphant FTL31

Liquiphant FTL31

TI Weld-in adapter, process adapter and flanges

Liquiphant FTL31 IO-Link

Liquiphant FTL31

Liquiphant FTL31 IO-Link

Liquiphant FTL31

KA Liquiphant FTL31

KA Liquiphant FTL31

Liquiphant FTL31, FTL33

Liquiphant FTL31, FTL33

SD M12 socket

Back

Valve Plug ISO4400 M16, 4-pole

Valve plug ISO4400 NPTF1/2, 4-pole

Valve plug ISO4400 QUICKON, 4-pole

Pressure ring f.weld-in adapt.G3/4" 316L

Sealing ring G1/2, 21x26, FA, 5 pcs.

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

Sealing ring G1, 33x39 FA, 5 pcs.

Sealing ring 15,08x2,62 EPDM, 5 pcs

O-ring 14.9x2.7 VMQ, FDA, 5 pcs.

O-ring 14.9x2.7 VMQ, FDA, USP, 3 pcs.

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

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

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

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

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

M12-female plug connector, cable side

M12-female plug connec., 100deg,5m cable

Cable M12-plug to 90o M12-fem.plug,LED

Socket wrench 32AF

Test magnet

Weld-in adapter G3/4, d=29, 316L

Weld-in adapter G3/4, d=29, 316L, 3.1

Weld-in adapter G3/4 d=50, 316L

Weld-in adapter G3/4 d=50, 316L, 3.1

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

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

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

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

Weld-in adapter G1, adjustable, 316L

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

Choose from our suggested options

Individual configuration

Often bought together

Products & Services

Industries

Vibronic
Point level detection
Liquiphant FTL31