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Unsheathed
Fine Gage
Tungsten-Rhenium Thermocouples
TOR / T5R / T3R
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Tungsten-Rhenium
thermocouples were developed to meet the requirements
for measuring ultra-high temperatures in the 5000°F (2760°C) range.
NEWPORT makes available 3 widely used Tungsten-Rhenium
thermocouple calibrations:
- Type G- Tungsten versus Tungsten-26% Rhenium
- Type C- Tungsten-5% Rhenium versus Tungsten-26% Rhenium
- Type D- Tungsten-3% Rhenium versus Tungsten-25% Rhenium.
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NEWPORT 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 that
that of W/W-26% Re and slightly more than that of W-5% Re/W-26%
Re. The difficulty 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 5000°F
(2760°C) in hydrogen or inert gas atmospheres in a vacuum. They undergo
rapid deterioration under oxidizing conditions and should
not be used in air or atmosphere containing oxygen.
NEWPORT Tungsten-Rhenium thermocouples are supplied in twelve
inch lengths which corresponds to each leg for a 24" total length. Longer lead lengths available,
consult Sales.
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i/32 DIN  |
i/16 DIN
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i/8 DIN
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| Will measure and control temperatures with Type C thermocouples. |
Limits
of Error for Tungsten-Rhenium Thermocouple Wire Combinations
| Wire
Diameter |
Temperature Range (†) |
Max.
Error or Departure
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0.003 (0.075mm)
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32 to 800°F (0 to 425°C)
800 to 3200°F (425 to 1750°C)
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±8°F (±4.5°C)
±1%
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0.005 (0.125mm)
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32 to 800°F (0 to 425°C)
800 to 3600°F (425 to 1975°C)
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±8°F (±4.5°C)
±1%
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0.010
to 0.020 (0.25 to 0.50mm)
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32 to 800°F (0 to 425°C)
800 to 4200°F (425 to 2300°C)
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±8°F (±4.5°C)
±1%
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†
Up to 5000°F (2760°C)
for short term exposure
Unsheathed Tungsten-Rhenium Thermocouples in 12" Lengths
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Calibration
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Wire Dia.
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Unsheathed
Model No.
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Butt-Welded
Model No.
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G
Tungsten-
Tungsten 26% Re
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0.003"
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T0R-003-12
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-
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0.005"
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T0R-005-12
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-
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0.010"
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T0R-010-12
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T0R-010-12-BW
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0.015"
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T0R-015-12
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T0R-015-12-BW
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0.020"
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T0R-020-12
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T0R-020-12-BW
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C*
Tungsten 5% Re-
Tungsten 26% Re
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0.003"
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T5R-003-12
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-
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0.005"
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T5R-005-12
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-
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0.010" |
T5R-010-12 |
T5R-010-12-BW |
0.015" |
T5R-015-12 |
T5R-015-12-BW |
0.020" |
T5R-020-12 |
T5R-020-12-BW |
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D
Tungsten 3% Re-
Tungsten 25% Re
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0.005" |
T3R-005-12 |
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0.010" |
T3R-010-12 |
T3R-010-12-BW |
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0.015"
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T3R-015-12
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T3R-015-12-BW
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0.020" |
T3R-020-12 |
T3R-020-12-BW |
* Most popular of the three Tungsten-Rhenium thermocouples, a large selection of instrumentation is available.
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† All dollar amounts on this site are shown in US currency.
Note: Tungsten-Rhenium alloy thermocouples are supplied in standard 300 mm (12") lengths, which corresponds to each leg for a 600 mm (24") total length. Change suffix “-12” in model number to indicate additional length required in inches. Consult Sales for other sizes.
Butt-Welded Tungsten-Rhenium thermocouples cannot be bent in the butt-welded area. All warranties are voided if the customer chooses to bend the thermocouple.
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