High Accuracy/Low Range Pressure Transducer

Setra’s Model 239 series of pressure transducers are specifically designed for very low pressure applications that require high accuracy.

Setra’s variable capacitance sensor is designed to be simple and reliable. A stainless steel diaphragm and an insulated electrode form a variable capacitor. As pressure increases or decreases, the capacitance changes. This change in capacitance is detected and converted to a linear D.C. electric signal by Setra’s unique electronic circuit. The Model 239 provides a high level voltage output. The C239 provides a 4-20 mA current output. High positive overpressure protection is achieved by the sensor electrode acting as a stop for the diaphragm. The high level output signals, excellent long term stability and fast dynamic response make these transducers ideal for a wide range of industrial, laboratory and aerospace applications.