... RTD. HX211 Process signal calibrator integrated voltage, current, resistance,frequency, thermocouple, RTD, pressure measurement, the output andother functions into one .it can ... ) current (DCmA) ,resistance, frequency, thermocouple, RTD,2. Measuring and output S,R,B,K,N ... RTD.4.It can cirectly calibrate Hart instrument5.It can connect digital pressure module.Detailes ,plz contact me HX211 Process signal ...