4-20 Continuous Level Transducer



The continuous transducer is available in brass, stainless

and many plastic configurations.  Floats can be Buna, plastic

and stainless of most specific gravities.


The  level probe is engineered with a internal

printed circuit board populated with an array of encapsulated reed

switches and resistors.  The magnet equipped float, follows the

liquid in the vessel and turns on a portion of the circuit

(magnetically) resulting in a signal out, proportional to the position

of the float on the probe. 


The 4-20 signal is an industry control standard and can be configured

with many common controls to perform various tasks for level monitoring

and control. NEMA 4 box is standard with terminal connections

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Continuous Level Transducer

4-20 Output

Most Materials

Design Criteria:


  • Rugged level applications
  • Custom probe length and fitting options
  • Partial or full length read
  • PC board design for accuracy
  • Buna float can extend off the bottom
  • Completely sealed electronics
  • Reeds are also epoxy encapsulated


Manual - Transducer: PDF

Manual - 4-20: PDF

Flyer: PDF


Possible Applications:


  • WFI skids
  • De-ionized water tanks
  • Fermentation tank
  • Pharmaceutical tank
  • Day tank level
  • Sump pit level
  • Condensate tank level

Working Parameters:

  • Metal or plastic construction

  • Maximum temperature - 300 deg. F

  • Specify - can be about 600 PSI

  • Internal resistance - optional

  • Most process connections available

  • Optional float specific gravity