Dwyer 185EL-S1 is a Linear Smart Positioner with a temperature range of -22 to 185°F (-30 to 85°C). It has a NEMA 4X (IP66) enclosure rating and is available in aluminum or 316SS housing. With a linearity of ±0.5% FS and repeatability of ±0.3% FS, it is suitable for hazardous locations. The positioner has a 1/2" NPT conduit connection and a 1/8" NPT connection. Its hysteresis is ±0.5% FS with an input impedance of 460 Ω max @ 20 mA DC. The sensitivity is ±0.2% FS and it has an air consumption of .0004 scfm (.01 LPM) at 20 psig (1.4 bar) supply. The flow capacity is 2.1 scfm (60 LPM) at 20 psig (1.4 bar) supply. It operates on a 4 to 20 mA DC input signal and 35 to 116 psi (2.4 to 8 bar) air supply. The air connections are 1/4" NPT and the stroke can range from 0.5 to 6" (10 to 150 mm) or 0 to 90°.