Setra’s model 204R Pressure Transducer is intended for accurate pressure measurements of a gas or liquid. Its high level output signal and excellent stability, combined with fast dynamic response, make this unit a good choice for industrial, laboratory and aerospace applications. The high level of accuracy is attained by combining Setra’s electronic circuitry with its variable capacitance sensor. The 204R is compensated for both zero and sensitivity shifts due to environmental temperature variations.
The 204R also offers high-level output (0-5 VDC or 4-20 mA), that requires no additional signal conditioning. The sensor features a one-piece 17-4 stainless steel pressure sensor and an insulated electrode, which form a variable capacitor. As pressure increases, the capacitance decreases. This change in capacitance is detected and converted to a linear DC electric signal. On absolute pressure units, the reference side of the diaphragm is sealed under high vacuum. Pressure ranges can be chosen from 0-10 PSID to 0-10000 PSID.