2 Pairs of Thermocouple pins and two Power Pins Feedthrough
D-Type Feedthrough, Consisting of 2 Thermocouple Pairs of Pins and 2 Power Pins on a 4.50" CF Flange.
SS, Glass-Ceramic, Chromel, Alumel
Max. Bake Temperature:
Max. Operating Temperature:
Max. Vacuum Level:
TC Pins - Milliamps, Power Pins - 20 AMP
6, 2-TC pairs and 2-Power
Male / Male
Min. Operating Temperature:
TC Pins - Chromel and Alumel, Power Pins - Ni-Fe alloy, Au-plt
Thermocouple feedthroughs do not measure temperature, but merely provide a conduit to bring the EMF signal generated at a thermocouple junction through a vacuum vessel wall to an external voltage measuring or temperature readout instrument. Type-K thermocouples with positive Chromel wires and negative Alumel wires are recommended for use in clean oxidizing atmospheres. The maximum operating temperature for these alloys is 1260 C for larger wire sizes. The useful temperature measuring range for a Type-K thermocouple is between (-)200 C to (+)1250 C.