Absolute pressure transducer PXM4 series
vacuumpiezoresistivestrain gauge

absolute pressure transducer
absolute pressure transducer
absolute pressure transducer
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Pressure type
absolute, vacuum
strain gauge, silicon, piezoresistive
4-20 mA
stainless steel
Protection level
intrinsically safe, EMC, IP65, IP67
Other characteristics
Process temperature

Max.: 121 °C (250 °F)

Min.: -45 °C (-49 °F)

Pressure range

Max.: 350,000 mbar (5,076.32 psi)

Min.: 25 mbar (0.36 psi)


0.08 %

Long-term stability

0.1 %


High (0.08%) Accuracy Pressure Transducers • Pressure transducer with 5-Point Traceable Calibration Certificate Included • G 1/4 (1/4" BSPP) Thread Standard • 0 to 100 mV, 0 to 10 Vdc, or 4 to 20 mA Outputs • Gauge, Compound Gauge, Absolute, Vacuum and Barometric Pressure Ranges Available • Welded Stainless Steel Construction • 316 Stainless Steel Wetted Parts • Premium Temperature Performance • Broad Compensated Temperature Range • Rugged Design, with Secondary Containment Description Omega's high accuracy piezoresistive pressure transducers have a proven record in high performance commercial and aerospace applications for over 25 years. The piezoresistive process uses strain gauges molecularly embedded into a highly stable silicon wafer. The silicon wafer is diced into individual die which each contain a full strain gauge bridge. The die is mounted in a sealed chamber protected from the environment by glass to metal seals and a stainless steel diaphragm. A small volume of silicone oil transfers the pressure from the diaphragm to the strain bridge. The construction provides a very rugged transducer with exceptional accuracy, stability and thermal effects. A unique design ruggedizes the transducers by providing secondary fluid containment in the event of a diaphragm rupture. During our production process, automated test equipment performs pressure and temperature cycling on 100% of the PXM409 series transducers. The transducers are then calibrated using extremely high accuracy standards and a 5-point traceable calibration certificate is included with each transducer.


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