TOR / T5R / T3R - Unsheathed Fine Gage Tungsten-Rhenium Thermocouples

Unsheathed Fine Gage Tungsten-Rhenium Thermocouples
TOR / T5R / T3R

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:

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

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.


i/32 DIN	i/16 DIN	i/8 DIN
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
0.003 (0.075mm)	32 to 800°F (0 to 425°C) 800 to 3200°F (425 to 1750°C)	±8°F (±4.5°C) ±1%
0.005 (0.125mm)	32 to 800°F (0 to 425°C) 800 to 3600°F (425 to 1975°C)	±8°F (±4.5°C) ±1%
0.010 to 0.020 (0.25 to 0.50mm)	32 to 800°F (0 to 425°C) 800 to 4200°F (425 to 2300°C)	±8°F (±4.5°C) ±1%

† Up to 5000°F (2760°C) for short term exposure

To Order (Specify Model No.) Prices Shown in U.S. Dollars

Calibration	Wire Dia.	Catalog No.**	Price (per Thermocouple)	Price per add'l Double Inch
G Tungsten- Tungsten 26% Re	.003	T0R-003-12	$35
	.005	T0R-005-12	$40
	.010	T0R-010-12	$60
	.015	T0R-015-12	$85
	.020	T0R-020-12	$110
C* Tungsten 5% Re- Tungsten 26% Re	.003	T5R-003-12	$35	$2.00
	.005	T5R-005-12	$40	$2.25
	.010	T5R-010-12	$60	$4.00
	.010	T5R-010-12-BW	$70	$4.00
	.015	T5R-015-12	$85	$6.00
	.015	T5R-015-12-BW	$95	$6.00
	.020	T5R-020-12	$110	$8.00
	.020	T5R-020-12-BW	$125	$8.00
D Tungsten 3% Re- Tungsten 25% Re	.005	T3R-005-12	$40	$2.25
	.010	T3R-010-12	$60	$4.00
	.010	T3R-010-12-BW	$70	$4.00
	.015	T3R-015-12	$85	$6.00
	.015	T3R-015-12-BW	$95	$6.00
	.020	T3R-020-12	$110	$8.00
	.020	T3R-020-12	$125	$8.00

* Most popular of the three Tungsten-Rhenium thermocouples, a large selection of instrumentation is available.
** 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.
Note: Butt-Welded -BW Tungsten-Rhenium thermocouples cannot be bent in the butt-welded area. All warranties are voided if the customer chooses to bend the thermocouple.

Ordering Example: T5R-010-12-BW is a butt-welded Type C thermocouple, 300 mm (12") long with a 0.25 mm (0.010") diameter, $70.