Differential Pressure Sensors

Differential Pressure Sensors measure the difference in pressure at two points and offers a comparative measurement between the two. Sometimes it is not essential to know the absolute pressure of a liquid or a gas. Rather, only the difference in pressure between the two points being monitored need to be known and this is where Differential pressure sensors play a crucial role.

Differential pressure sensors work by applying the two pressures that need to be measured to the opposite sides of a thin diaphragm. The positive or negative deflection in the diaphragm as compared to its rest state gives you the pressure difference.

These sensors are carefully designed with capacitive sensing technology by which the flexing of the diaphragm causes a change in the capacitance leading to a change in the sensor output. This technology allows capacitive pressure sensors to report in near real-time with extraordinary accuracy. Differential pressure sensors are used widely in filter monitoring, flow measurement etc.

MODEL 470

Model MRC (Multi-Range Critical Pressure Transducer)

Setra’s Model MRC multi-range low differential pressure transducer uses a dead-ended capacitive sensing element that requires minimal amplification and delivers excellent accuracy and longterm stability

Features:

  • Field Configurable Duct Probe
  • External Mounting Tabs & Optional DIN Rail
  • IP67 Rated Housing
  • 4 Digit LCD
  • Field Selectable Range
  • Field Selectable Output
  • Simple 5-Step Setup
  • Field Accessible Push-Button Zero & Span
  • Unregulated AC/DC Operation
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MODEL 470

Model 265

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.

 Features:

  • 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
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MODEL 470

Model GEO-DPT3529

Features:

  • Ranges from -50…+50 Pa to -500…+500 Pa
  • High accuracy, repeatability and zero stability
  • Fully calibrated and temperature compensated
  • Two analog outputs settable to 4-20 mA or 0-10 V
  • RS485 Modbus RTU digital interface
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