Setra 227 Ultra High Purity Pressure Transducer


  • Variable capacitance technology
  • High resolution & longterm stability
  • Small cavity, efficient purge cycles
  • Semi F19/F20 compliant 316L VIM/VAR wetted materials
  • EMI/RFI immunity prevents false shutdown
  • Optimal non-incendive approval for use in potentially hazardous locations available for 4-20mA output units
  • CE & RoHS compliant




Setra’s model 227 transducer is designed for high-density, surface-mount gas sticks and panels, required for today’s 300 mm tools. The Mode 227’s 1-1/8” footprint optimizes valuable space, and its rugged design makes it ideal for pressure measurements that require long-term stability, high accuracy and exceptional insensitivity to environmental extremes.


Key Benefits

  • 316L VIM/VAR stainless steel wetted materials
    Unlike many other designs with large dead-ended cavity volume, the 227 has a small swept sensor chamber for easy purgeability. All wetted parts are 316L VIM/VAR stainless steel passivated to 5 Ra (7 Ra. max) finish, which eliminates surface irregularities and provides the proper surface chemistry for corrosion resistance, assuring contaminant-free gas distribution.
  • Versatile configuration options
    Available with 5 VDC, 10 VDC, or 4 to 20mA output, the Model 227 offers +_0.25% Full Scale or 1.0% of Reading accuracy. The Model 227 comes with a industry standard 1-1/8” C-Seal surface mount base with choice of a multiconductor cable, 4-pin bayonet connector, and 9 or 15 pin D-sub connector for electrical termination. When coupled with the Model 328 1-1/8” rotatable display, this package provides the ultimate in pressure measurement and local readout. Side access to the zero and span adjustments beneath the rotating protective cover, and choice of absolute, gauge or compound pressure ranges complete this unique design.
  • Principle of operation
    Setra’s patented variable capacitance sensor features a 316L stainless steel diaphragm and an insulated electrode plate. A variable capacitor is formed between the sensor body and the electrode plate. An increase in pressure causes a slight rounding of the diaphragm, which decreases the capacitance. The capacitance change is detected and converted to a highly accurate linear DC electric signal by Setra’s unique custom integrated circuit, utilizing a patented charge balance principle. Setra’s entire ultra-high purity series is based on Setra’s proven capacitive sensing technology with highly accurate and stable voltage or current output signals that are virtually EMI/RFI immune.


  • Modular 1-1/8” surface mount gas sticks and panels
  • High purity gas delivery systems
  • Semiconductor process tools

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.






Setra 227 Ultra High Purity Pressure Transducer_DpstarGroup