Nivotester FTW325

Intrinsically safe limit switch for connection to conductive sensors

General Information
Input / Output
Electrical Data
Mechanical Data
Certification / Approvals
Additional Information


  • Input: Conductive sensors
  • Output: 2x SPDT relays
  • Number of channels: Up to 3 channels
  • Configuration via DIP switches
  • Approvals: Ex-area, WHG, SIL

Fields of application

  • Overfill protection according to WHG
  • Dry-run protection
  • Two-point control of pumps
  • Slurry filling level indicator


The Endress+Hauser Nivotester FTW325 is an intrinsically safe limit switch for connection to conductive sensors. The compact housing allows easy serial mounting on a DIN rail in the control cabinet. In addition, probes of the type Liquipoint T FTW31/32 can be connected. Multi-point detection with up to five measuring points can be achieved by using three FTW325 level testers.

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What do our customers say

Valentine Godin

Great product and customer care! Reliable, fast and honest... I have recently purchased 2 pieces of equipments; their service has been spot on from start to finish, understanding my needs, providing useful advice and rapid assistance when it was required! Highly satisfied, I highly recommend their teams and would definitely work with them again in the future!

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Nivotester FTW325
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What do our customers say

Somya Gupta

The conversation was highly helpful to me. I want to know about the suitable sensors that can be used for level measurements for conical tank systems. Mr. Pedro has quickly responded and explained in very ease way. It was nice interacting with him.

Product Details