... Measuring and output Pt10,Pt100,Cu50,Cu100 RTD. HX211 Process signal calibrator integrated voltage, current, resistance,frequency, thermocouple, RTD, ... andother functions into one .it can connect external pressure module andcalibrate hart instrument. All english graphic touch buttons. ... Hart instrument5.It can connect digital pressure module.Detailes ,plz contact me HX211 Process signal calibrator