Omega Products EX-C-010 User Manual

Tungsten-Rhenium
Fine Diameter
Thermocouple Wire

High-Temperature
Applications

Matched

Pairs!

U Calibrated
Accuracy Guaranteed

U Melting Point in Excess
of 2315°C (4200°F)

Uninsulated Refractory Metal Thermocouple Wire

Tungsten-rhenium thermocouple alloy
combinations were developed to meet
the need for measuring ultra-high
temperatures in the 2315°C
(4200°F) range.

OMEGA sells 3 widely used
tungsten-rhenium thermocouple
alloy combinations:

Type G: Tungsten (+) vs.
Tungsten 26% rhenium (–)

Type C: Tungsten 5% rhenium (+) vs.
Tungsten 26% rhenium (–)

Type D: Tungsten 3% rhenium (+) vs.
Tungsten 25% rhenium (–)

To guarantee the limits of error,
OMEGA
thermocouple wire only in matched
pairs by the double foot. Because of
the inherent brittleness of unalloyed
tungsten, rhenium has been added
to the positive leg of types C and D
to improve handling characteristics.
The average emf of types C and D is
slightly less than that of the unalloyed
type G.

All 3 thermocouple combinations
can be used to 4200°F (2315°C) in
hydrogen or inert-gas atmospheres
and in a vacuum. They deteriorate
rapidly under oxidizing conditions
and should not be used in air or
atmospheres containing oxygen.

For other wire sizes and large
quantities, consult the Special
Quotations department.

®

sells tungsten-rhenium

To Order Visit omega.com/www26_w5w26_w3w25 for Pricing and Details

Wire Dia. Model
Symbol Material mm (inch) Number

0.08 (0.003) WW26-003

0.13 (0.005) WW26-005
Tungsten vs. 0.25 (0.010) WW26-010
Tungsten 26% Re 0.38 (0.015) WW26-015

0.51 (0.020) WW26-020

0.08 (0.003) W5W26-003

0.13 (0.005) W5W26-005
Tungsten 5% Re vs. 0.25 (0.010) W5W26-010
Tungsten 26% Re 0.38 (0.015) W5W26-015

0.51 (0.020) W5W26-020

0.13 (0.005) W3W25-005
Tungsten 3% Re vs. 0.25 (0.010) W3W25-010
Tungsten 25% Re 0.38 (0.015) W3W25-015

0.51 (0.020) W3W25-020

Not an ANSI symbol.

*

Sold only as matched pairs. A double foot is 1' of positive and 1' of matched negative wire.

**

Note: Metric dimensions are approximate.
Ordering Example: W5W26-010, 10' of 0.25 mm (0.010") Dia., uninsulated refractory metal

tungsten-rhenium thermocouple wire.

Extension-Grade Wire
Uninsulated Lead Wire for Tungsten-Rhenium Thermocouples

Thermocouple Model Temperature Wire
Symbol Used With Number Range °C (°F) Dia.

204 to 426
W5%Re EX-C-010 (400 to 800) 10 mil

vs W26%Re 204 to 426
EX-C-020 (400 to 800) 20 mil

Insulated extension-grade wire also available.

Not an ANSI symbol.

*

*

High

Accuracy!

H-15

Extreme (High) Temperature
Sensors and Accessories

Platinum Thermocouples Type R, S, and B,
Tungsten-Rhenium Type C and D

Bare Wire Platinum
Thermocouples P10R,
P13R, and P30R Series.
Shown larger than actual
size. See Page A-17.

HIGH

TEMPERATURE

®

Extreme (High) Temperature
Metal Sheathed Probes
(2315°C [4200°F]) XMO Series.
See Page A-63.

Ceramic Sheath
Thermocouples
RAT/BAT/SAT Series.

See Page A-125.

H

High Temperature Ceramic Accessories ORX Series. See Page A-143.

Ceramic
Connectors
NOX Series.

See Page
G-23.

Ceramic Protection Tubes–PTRA Series.
See Page A-139.

All models shown
smaller than actual size.

Insulated Duplex Extension Wire

To Order Visit omega.com/www26_w5w26_w3w25 for Pricing and Details

Maximum
Thermocouple Model Temperature Wire Dia.
Material Used With Number °C °F AWG mm

EXTT-RS-24 200 392 24 0.51
Cu -A l lo y 11 R and S EXGG-RS-24 200 392 24 0.51
EXTT-RS-20 200 392 20 0.81

EXTT-B-26S 100 212 26 0.40
Cu-Cu B EXT T- B-24S 100 212 24 0.51
EXTT-B-20 100 212 20 0.81

Ni/ AI-Ni/ Cu C EXGG-C-24 427 800 24 0.81
EXTT-C -24 260 500 24 0.81

H-16