The Model 235 from Setra Systems Inc.
, Boxborough, MA, is a wet-to-wet, high-line, differential pressure transducer designed to measure pressure of liquids or gases in applications with line pressures up to 2500 psig. Wetted parts are SS, alumina ceramic, and glass. Features include ±0.18% F.S. accuracy, total error band of ±0.5% F.S. over the compensated temperature range of –20°F to 160°F for pressures from 5 psid through 500 in.w.c. Total error band on the units with 2 psid ranges is ±0.75%. Output is a choice of 4–20 mA or 0.5–4.5 VDC. Pressure ranges are 2 psid up to 500 in.w.c.