4 Pairs of Thermocouple Feedthrough on a KF40 CF Flange
D-Type Feedthrough, Consisting of 4 Thermocouple Pairs of Pins on a KF40 Flange.
SS, Glass-Ceramic, Chromel, Alumel
Max. Bake Temperature:
Max. Operating Temperature:
150ºC, limited by O-ring type used.
Max. Vacuum Level:
TC Pins - Milliamps
8, 4-TC pairs
Male / Male
TC Pins - Chromel and Alumel
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.