Dwyer 636-4 is a fixed range pressure transmitter with an accuracy of ±0.30%. It has a temperature range of -40 to 140°F for electronics and -40 to 212°F for the process interface. It operates on 12 to 30 VDC power and has a NEMA 4 enclosure rating. The output signal is 4 to 20 mA DC, and zero and span adjustments are provided. It can be used with liquid, gas, or vapor and has a pressure limit of 300% upper range limit. The process connection is 1/2" female NPT and it has a thermal effect of ±2.0% per 50°F. The stability is ±0.5% for six months and it uses DC 200 Silicone as fill fluid.