Our Experience
30+
YEARS OF EXPQuality Assurance
Fast delivery
Support OEM
We makes available three widely used Tungsten-Rhenium thermocouple calibrations. Tungsten versus Tungsten-26% Rhenium, Tungsten-5% Rhenium versus Tungsten-26% Rhenium and Tungsten-3% Rhenium versus Tungsten-25% Rhenium.
Tungsten-Rhenium Thermocouples conform to the limits of error listed in the Table: “Limits of Error for Tungsten-Rhenium Thermocouple Wire combinations.”
Because of the inherent brittleness of unalloyed Tungsten, the Tungsten versus Tungsten-26% Rhenium thermocouples are more difficult to handle than the Tungsten-5% Rhenium versus Tungsten-26% Rhenium combination.
The average EMF of the W-3% Re/W-25% Re is slightly less than that of W/W-26% Re and slightly more than that of W-5% Re/W-26% Re. The ductility of W-3% Re is about equal to that of W-5%Re, but superior to that of unalloyed Tungsten.
All three thermocouple calibrations can be used to 2760°C (5000°F) in hydrogen or inert gas atmospheres and in a vacuum. They undergo rapid deterioration under oxidizing conditions and should not be used in air or atmospheres containing oxygen.
Tungsten-Rhenium thermocouples are supplied in 12-inch lengths which corresponds to each leg for a 24″ total length. Longer lead lengths are available, Consult Sales.
Product Name | Model | Standard | Insulation material | Max Temp. | Use atmosphere | Tolerance |
Molybdenum tungsten-rhenium | WRe3 / 25 | Φ4~8mm | Corundum tube | ≤1600 | vacuum, hydrogen, | ±1% |
thermocouples casing | WRe5 / 26 | - | - | - | inert gas | - |
Tantalum, tungsten, rhenium | WRe3 / 25 | Φ4~8mm | Beryllia | ≤1800 | vacuum, inert gas | ±1% |
thermocouple casing | WRe5 / 26 | - | - | - | - | - |
tungsten casing tungsten-rhenium | WRe3 / 25 | Φ6~8mm | Boron nitride | ≤2000 | vacuum, hydrogen, inert gas | ±1% |
thermocouples | WRe5 / 26 | - | - | - | - | - |