Unsheathed Fine Gage Tungsten-Rhenium Microtemp Thermocouples

T5R and T3R Series

Unsheathed Fine Gage Tungsten-Rhenium Microtemp Thermocouples | T5R and T3R Series

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  • Ultra High Temperature Range up to 2760°C(5000°F) See spec sheet details
  • Wire Sizes as Small as 0.076mm(0.003in.)
  • Type D and Type C Thermocouples
  • Thermocouples Provided in 12 Inch Length Standard, Other Sizes Available
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Tungsten-Rhenium thermocouples were developed to meet the requirements for measuring ultra-high temperatures in the 2760°C (5000°F) range.
OMEGA™ makes available three widely used Tungsten- Rhenium thermocouple calibrations.

Tungsten versus Tungsten-26% Rhenium
Tungsten-5% Rhenium versus Tungsten-26% Rhenium
Tungsten-3% Rhenium versusTungsten-25% Rhenium.

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.
OMEGA™ Tungsten-Rhenium thermocouples are supplied in 300 mm (12") lengths (600 mm [24"] loop). Longer lead lengths are available, Consult Sales.

View the Thermocouple Accuracy and Color Code charts
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