... 648 Smart HART temperature transmitter isolation module 1.Output signal:4-20mA 2.All input ... 3.All isolation STT 648 Smart HART temperature transmitter ... transmitter. It supports PT50, PT100, PT 1000 RTD and E,J,B,K,N,R,S,T Thermocouple, also support mA signal ... +HART protocol (two-wire system)HART transmitter power supply voltageDC10V~32VDamping0-32 seconds adjustableData ...