Omega Engineering PX319-100GI - Stainless Steel Pressure Transducer, General Purpose, Gauge, 0 psi to 100 psi, +/- 0.25 %, 1/4" NPT Male, Current, 4 mA to 20 mA, Mini DIN 43650 C
PX309 Series Stainless Steel Pressure transducers below 100 psi use a high accuracy silicon sensor protected by an oil-filled stainless steel diaphragm. Units 100 psi and above use silicon strain gages molecularly bonded to the stainless steel diaphragm.