Application
The Liquiphant FTL31 is a point level switch for liquids and is used in tanks, vessels
and pipes.
It is used for overfill protection or pump protection in cleaning and filter systems as
well as in cooling and lubrication vessels, for instance.
Ideal for applications in which float switches or conductive, capacitance and optical
sensors have been used up to now. The Liquiphant FTL31 also works in areas where
these measuring principles are not suitable due to conductivity, buildup, turbulence,
flow conditions or air bubbles.
The Liquiphant FTL31 can be used for process temperatures up to:
• 100 °C (212 °F)
• 150 °C (302 °F)
Not suitable for hazardous areas.
The use of the Liquiphant FTL33 is recommended for hygiene areas.

Your benefits
• Operational safety, reliability and universal application thanks to the tuning fork
measuring principle
• Robust stainless steel housing (316L), optionally available with M12x1 plug with
IP69 protection
• External function test with test magnet
• Onsite function check possible thanks to LED indication
• Compact design for easy installation even in confined conditions or hard-to-access areas