Single and double channel 2-wire, 3-wire, 4wire RTD (PT100 ... calibrating thermocouple ,resistance ,temperature second instrument in lab and fieldFunction1 Single and double channel MV, Ohm measuring function .2 Single ... and double channel Two-wire, Three-wire, Four-wire RTD(PT100, PT10, CU50, CU100) measuring .3 With cold junction ... .02%RD+0.005%FS HX213 Thermocouple &RTD Calibrator(light weight)