Mid West Instrument’s Model 121 transmitter provides low-cost, loop-powered, 8-28 Vdc, two-wire 4-20 ma support for a variety of applications. The unit features a 1/2” NPT interface with an easy-to-wire industrial terminal strip and a removable cover. Accuracy is +/-2% from 20 percent to 100 percent of full scale. Temperature operating range is -20 F to 150 F (-20 C to 65 C). The unit also features a pushbutton zero reset feature. Units available in pressure ranges from 0-5 PSID (0-3 bar) to 0-110 PSID (0-7 bar).