Setra 550 Low Pressure Transducer


  • Superior Stability Avoid Downtime
  • NEMA 4/IP65 and NEMA 6/IP68 Rated
  • ±0.25% FS High Accuracy
  • 3:1 Range Turndown
  • Meets CE Conformance Standards



Setra’s model 550 low-pressure transducer features a 3:1 range turndown for field adjustment from 110% to 32% of the nominal range, making this unit well-suited for applications that are subject to overpressure. Adjustment is made via the switch and potentiometer conveniently located on the top of the transducer housing. The Model 550 is packaged in a rugged 316 stainless steel housing for use in general-purpose and submersible applications. A male or female threaded pressure fitting is offered for general-purpose applications, and an open-face style with a KF25 flange is offered for submersible applications. The Model 550 circuit is RFI/lightning protected, virtually eliminating costly field replacement.

Principle of Operation

The capacitive sensor is constructed of an electrically isolated stainless steel electrode and ceramic diaphragm, mounted closely and in parallel to each other. The diaphragm is capable of slight flexing under applied pressure. A minute change in applied pressure alters the gap between the electrode and the diaphragm. This change is detected by a custom-designed ASIC, amplified, and converted to a high-level linear output signal that is proportional to applied pressure.



  • Tank Level
  • Reservoir Level
  • River Level
  • Hydro-Power
  • Open Channel Flow
  • Flood Warning
  • Waste Water

Dpstar is an authorized distributor of Setra Systems. We provide our customers with the best selection of instrumentation and equipment with unrivaled prices to perform Pressure Sensing Solutions. Setra’s pressure sensors are known for their quality and reliability. Designed with premium capacitive sensing technology, Setra offers single-range and multi-range (field-selectable) pressure sensors. Capable of measuring both liquid and gasses, Setra has the product to meet a breadth of HVAC applications and can be trusted in your most critical applications. Trust Setra’s over 50 years of pressure transducer engineering excellence.




Setra 550 Low Pressure Transducer_DpstarGroup