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Point level detection
Nivotester FTL375P

Switching unit with intrinsically safe signal circuit for connection to Liquiphant or Soliphant

  • Nivotester FTL375P ©Endress+Hauser

The switching unit FTL375P is used for point level detection in liquid tanks and bulk material silos, also in hazardous explosion areas. Also suitable for liquid detection in pipes for dry running protection for pumps and overfill prevention for tanks with combustible or non-combustible liquids harmful to water. Up to 3 measuring devices for two-point control and point level detection. Functional safety up to SIL3 in accordance to IEC 61508 using Liquiphant with electronic insert FEL57.


  • Nivotester FTL375P for connecting one, two or three measuring cells (1-, 2- or 3-channel devices)

  • Intrinsically safe signal circuits Ex ia for use of measuring sensor in explosion hazardous areas

  • Functional safety up to SIL2 through line monitoring. Simplified proof testing to WHG/SIL by pressing push-button

  • Racksyst plug-in card in Europa card format to DIN 41494, 4 HP wide, 3 HU high

  • Inputs are galvanically isolated from each other, from the mains and from the outputs

Field of application

Switching unit with intrinsically safe signal circuit for connection to Liquiphant or Soliphant.

  • Ambient temperature: -20 to +70°C (-4 to +158°F)

  • International explosion protection certificates, overfill prevention WHG, marine approvals

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: FTL370, FTL372

Successor: Nivotester FTL325P

Success stories


Endress+Hauser Inc.
2350 Endress Place Greenwood , IN 46143 United States
Tel.: 888-363-7377
Fax: 317-535-8498
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