Thermometric insert with MgO insulation                     sensing element sensor connection accuracy stem in mm stem length in mm single double PT 100 PT100 with 4-20 mA transmitter  2 wires 3 wires 4 wires (1 sensing element) acc. IEC 751 class A acc. IEC 751 class B acc. IEC 751 class 1/3 B 3 4,5 6 specify in mm