Indicating transmitterModel 121 indicating transmitter provides a simple, loop-powered 8-28 Vdc twowire 4-20mA signal. It features a -in. NPT interface with easy-to-wire industrial terminal strip and a removable cover. Accuracy is ± 2% from 20% to 100% full scale. It operates in temperatures from –20° to 150° F and is available in aluminum or 316 stainless-steel construction. Safe working pressure is 6000 psig and pressure ranges from 0-5 to 0-110 psid are available. Mid-West Instrument, (800) 648-5778, www.midwestinstrument.com