Thermocouple feedthrough
Thermocouple Feedthroughs
Force induced when heat is applied to two dissimilar metal wires. A variety of vacuum-side connectors are available. Thermocouple is available from one to five pairs.
The wires are air-side terminated to accept one of the several connections methods: plug, push-on split connectors or screw connections. Vacuum-side connections might be push-on split connector, or screw mounted.
When selecting T/C feedthrough, major considerations are the temperature range, number of measurement location, and the requirement of power conductor built into the same FT.
Basic Selection
| Type | Thermocouple Material (Positive / Negative) |
Temperature (°C) | Compensate Wire Junction | |
|---|---|---|---|---|
| T | Copper | Constantan | -184 to 400 | N/A |
| K | Chromel | Alumel | -184 to 1260 | N/A |
| J | Iron | Constantan | 0 to 750 | N/A |
| C | Tungsten | Tungsten | 0 to 2760 | N/A |
Type R: Noble metal (Platinum-Rhodium) thermal couple is good up to 1540°C
Type C: Refractory metal (Tungsten-Rhenium) thermal couple is good up to 2760°C
Drawings and specification available upon request.