Setra 265 Low Differential Pressure Transducer


  • Excellent price-to-performance ratio
  • Reduce installation costs
  • ±0.25%, ±0.4%, ±1% FS accuracy options
  • 24 VDC or 24 VAC excitation
  • Voltage or analog outputs
  • Reverse wiring protection
  • Internal regulation
  • Fire retardant case (UL 94 V-0 approved)
  • CE & RoHS compliant



Setra’s Model 265 is a lower-price solution that offers an excellent price-to-performance ratio and meets the requirements in all typical HVAC applications. The 265 is a low differential pressure transducer that uses a dead-ended capacitive sensing element that requires minimal amplification and delivers excellent accuracy and long-term stability. It delivers ±1% FS accuracy with ±0.25% and ±0.5% accuracy options with pressure ranges from 0.25” W.C. up to 100” W.C. The 265 has a small footprint, an AC power option, and an optional conduit cover that allows for simple, secure installation for any applications.


Key Benefits

  • The Best Price-to-performance In The Industry
    The 265 delivers exceptional features at a low price, perfect for any OEM looking for quality and performance at an affordable price.
  • quick and Easy Installation
    The 265 is designed to reduce installation costs while increasing overall operating efficiency. Installation is easy with integral mounting tabs, pressure connections located on the face of the unit, and a screw terminal strip for electrical termination.
  • The Setra Sensor
    The core technology of the 265 is the all stainless steel capacitive sensing element. Setra designs and manufactures all of their sensing elements resulting in full control over the process and quality of every single sensor. The welded dead-ended capacitive sensors requires minimal amplification and deliver excellent accuracy and long-term stability. Setra’s technology has been used in over 8 million installations and has the highest field acceptance rate in the industry.


  • HVAC systems
  • Energy management systems
  • Variable Air Volume and Fan Control (VAV)
  • Environmental pollution control
  • Static duct and cleanroom pressures

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 in 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.



Performance Data
Accuracy RSS1 (at constant temp) ±1.0% FS (standard); ±0.4% FS, ±0.25% FS (optional)
Non-linearity, BFSL ±0.98% FS (standard); ±0.38% FS, ±0.22% FS (optional)
Hysteresis 0.10% FS
Non-repeatability 0.05% FS
Thermal Effects2
Compensated range ºF (ºC) 0 to +150 (-18 to +65)
 Zero shift %FS/100ºF(50ºC) ±0.033 (±0.06)
Span shift %FS/100ºF(50ºC) ±0.033 (±0.06)
Max. line pressure 10 PSI
Overpressure Up to 10 PSI (range dependent)
Long term stability 0.5% FS/YR
Warm-up shift ±0.1% FS Total
Environmental Data
Operating temperature ºF (ºC)3 0 to +150 (-18 to +65)
Storage temperature ºF (ºC) -40 to +185 (-40 to +85)
Physical Description
Pressure Fittings 1/4” Fitting
Case Fire Retardant Glass Filled Polyester (UL 94-V Approved)
Weight 3 oz
Elec. Connection Screw terminal strip
Position Effect4
Range Zero offset (%FS/G)
0 to 0.5” W.C. 0.6
0 to 1.0”W.C. 0.5
0 to 2.5”W.C. 0.22
0 to 5.0”W.C 0.14
Electrical Data (voltage)
Circuit 3-Wire (Com, Out, Exc)
Excitation/output5 9 to 30 VDC / 0 to 5 VDC6
9 to 30 VAC / 0 to 5 VDC
12 to 30 VAC / 0 to 10 VDC6
Output impedance <100 ohms
Bidirectional output at zero pressure 2.5 VDC (±50 mV)
Electrical Data (current)
Circuit 2-wire
Output7 4 to 20 mA3
External load 0 to 800 ohms
Min. loop supply voltage (VDC) 9 + 0.02 x (resistance of receiver plus line)
Max. loop supply voltage (VDC) 30 + 0.004 x (resistance of receiver plus line)
Bidirectional output at zero pressure 12 mA
Pressure Media
Clean air or similar non-conducting gases.
1 RSS of Non-Linearity, Non-Repeatability, and Hysteresis
2 Units calibrated at nominal 70ºF. Maximum thermal error computed from this datum.
3 Operating temperature of the electronics only. Pressure media temperatures may be considerably higher or lower.
4 Unit is factory calibrated at 0g effect of vertical position.
5 Calibrated into 50K ohm load. Operable into 5000 ohms or greater.
6 Zero & Span (FS) output factory set to within ±50mV (±25 mV for optional accuracies).
7 Calibrated at the factory with a 24 VDC loop supply voltage and a 250-ohm load.
8 Zero & Span (FS) output factory set to within ±0.16 mA (±0.08 mA for optional accuracies.).


Setra 265 Low Differential Pressure Transducer_DpstarGroup