Platinum-Rhodium Fine Diameter Bare Thermocouple Wire
Uninsulated, Fine Gage, Platinum-Rhodium Thermocouple Wire, Single Leg and Matched Pairs
Volume discounts available
Volume Discount Schedule
| Quantity | Price each |
|---|---|
| 1-29 | $47.81 |
| 30-74 | $45.42 |
| 75-149 | $44.46 |
| 150-299 | $42.55 |
| 300-1499 | $41.59 |
| 1500+ | $40.64 |
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- Ordering unit of measure is double inch, which is 25mm (1") of positive and 25mm (1") of matching negative wire
- Available as Single Legs and as Matched Wire Pairs
- Type R and S Temperature Ranges from 1398 to 1482°C (2550 to 2700°F)
- Type B is rated for continuous use up to 1704°C (3100°F)
- Ordering unit of measure is “inch” for single wires
- Ordering unit of measure is “double inch” for paired wires, which is 1 inch (25 mm) of positive wire and 1 inch (25 mm) of negative wire
SPPL-025 Model Options
View all modelsEdit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.
*Highlighted options are not compatible. Please select a different combination.
Thermocouple Type
Process Temperature Range
Wire Gauge
Matched Pair
Category
Wire Type
Cable Length
Additional Feature
- Use With Sensor Type Thermocouple
For high resistance to oxidation and corrosion at high temperatures, OMEGA offers the highest quality uninsulated wire for three types of “noble metal” thermocouples.
They are:
Type S:
Platinum (–) vs.
Platinum 10% Rhodium (+)
Type R:
Platinum (–) vs.
Platinum 13% Rhodium (+)
Type B:
Platinum 6% Rhodium (–) vs.
Platinum 30% Rhodium (+)
Types R and S are recommended for continuous use in oxidizing or inert atmospheres up to 2550°F (1398°C) or short term exposures to 2700°F (1482°C). Type B is rated for continuous use up to 3100°F (1704°C) in oxidizing or inert atmospheres. When operating near these maximum temperatures, the heavier gage wire sizes are recommended.
All three thermocouple types can be used in a vacuum for short periods of time. Type B offers greater stability in such applications. None should be used in reducing atmospheres or in atmospheres containing metallic or non-metallic vapors unless protected by non-metallic protection tubes. Do not insert directly into metallic protection tubes.
Sizes range from 0.001 to 0.032" (0.025 to 0.812 mm) diameter. When requested, wire is supplied in matched pairs which meet or exceed standard limits of error. Special-limits-of-error wire is supplied on request and must be ordered as matched pairs.BR>
Insulated duplex extension grade wire for types R, S, and B are also available. See, for example, model numbers EXGG-RS, EXTT-RS, EXPP-RS under the heading EXTENSION WIRE.
Uninsulated Noble Metal Thermocouple Wire
Note: Metric dimensions are approximate
Insulated Duplex Extension Grade Wire*
* Also see duplex wire on pages H-25 through H-33
Note: Published price is based on market value at time of printing and is subject to change due to precious metal market fluctuations.
Uninsulated Matched Pair Noble Metal Thermocouple Wire
* Ordering Unit of Measure is double inch. A double inch is 25 mm (1") of positive and 25 mm (1") of matching negative wire.
Note: Published price is based on market value at time of printing and is subject to change due to precious metal market fluctuations.
Note: Metric dimensions are approximate
View the Thermocouple Accuracy and Color Code charts
They are:
Type S:
Platinum (–) vs.
Platinum 10% Rhodium (+)
Type R:
Platinum (–) vs.
Platinum 13% Rhodium (+)
Type B:
Platinum 6% Rhodium (–) vs.
Platinum 30% Rhodium (+)
Types R and S are recommended for continuous use in oxidizing or inert atmospheres up to 2550°F (1398°C) or short term exposures to 2700°F (1482°C). Type B is rated for continuous use up to 3100°F (1704°C) in oxidizing or inert atmospheres. When operating near these maximum temperatures, the heavier gage wire sizes are recommended.
All three thermocouple types can be used in a vacuum for short periods of time. Type B offers greater stability in such applications. None should be used in reducing atmospheres or in atmospheres containing metallic or non-metallic vapors unless protected by non-metallic protection tubes. Do not insert directly into metallic protection tubes.
Sizes range from 0.001 to 0.032" (0.025 to 0.812 mm) diameter. When requested, wire is supplied in matched pairs which meet or exceed standard limits of error. Special-limits-of-error wire is supplied on request and must be ordered as matched pairs.BR>
Insulated duplex extension grade wire for types R, S, and B are also available. See, for example, model numbers EXGG-RS, EXTT-RS, EXPP-RS under the heading EXTENSION WIRE.
Uninsulated Noble Metal Thermocouple Wire
| Material | Nom. Wire Dia. mm (") | Model No. | Material | Nom. Wire Dia. mm (") | Model No. |
| Platinum (RN, SN) | 0.03 (0.001) 0.05 (0.002) 0.08 (0.003) 0.13 (0.005) 0.20 (0.008) 0.25 (0.010) 0.38 (0.015) 0.51 (0.020) 0.64 (0.025) 0.81 (0.032) | SPPL-001 SPPL-002 SPPL-003 SPPL-005 SPPL-008 SPPL-010 SPPL-015 SPPL-020 SPPL-025 SPPL-032 | Platinum 13% Rh (RP) | 0.03 (0.001) 0.05 (0.002) 0.08 (0.003) 0.13 (0.005) 0.20 (0.008) 0.25 (0.010) 0.38 (0.015) 0.51 (0.020) 0.64 (0.025) 0.81 (0.032) | SP13RH-001 SP13RH-002 SP13RH-003 SP13RH-005 SP13RH-008 SP13RH-010 SP13RH-015 SP13RH-020 SP13RH-025 SP13RH-032 |
| Platinum 10% Rh (SP) | 0.03 (0.001) 0.05 (0.002) 0.08 (0.003) 0.13 (0.005) 0.20 (0.008) 0.25 (0.010) 0.38 (0.015) 0.51 (0.020) 0.64 (0.025) 0.81 (0.032) | SP10RH-001 SP10RH-002 SP10RH-003 SP10RH-005 SP10RH-008 SP10RH-010 SP10RH-015 SP10RH-020 SP10RH-025 SP10RH-032 | Platinum 6% Rh (BN) | 0.20 (0.008) 0.25 (0.010) 0.38 (0.015) 0.51 (0.020) 0.81 (0.032) | SP6RH-008 SP6RH-010 SP6RH-015 SP6RH-020 SP6RH-032 |
| Platinum 30% Rh (BP) | 0.20 (0.008) 0.25 (0.010) 0.38 (0.015) 0.51 (0.020) 0.81 (0.032) | SP30RH-008 SP30RH-010 SP30RH-015 SP30RH-020 SP30RH-032 |
Insulated Duplex Extension Grade Wire*
| Thermocouple Material | Used With | Model AWG | Temp. Number | Maximum | |
| °C | °F | ||||
| Cu-Alloy 11 | R&S | 24 24 20 | EXTT-RS-24 EXGG-RS-24 EXTT-RS-20 | 200 200 200 | 392 392 392 |
| Cu-Cu | B | 26 24 20 | EXTT-B-26S EXPP-B-24S EXGG-B-20 | 100 100 100 | 212 212 212 |
Note: Published price is based on market value at time of printing and is subject to change due to precious metal market fluctuations.
Uninsulated Matched Pair Noble Metal Thermocouple Wire
| T/C Type | Material | Wire Dia. mm (inch) | Model No. |
| R | Platinum vs Platinum-13% Rhodium | 0.03 (0.001) 0.05 (0.002) 0.08 (0.003) 0.13 (0.005) 0.20 (0.008) 0.25 (0.010) 0.38 (0.015) 0.51 (0.020) 0.64 (0.025) 0.81 (0.032) | SP13R-001 SP13R-002 SP13R-003 SP13R-005 SP13R-008 SP13R-010 SP13R-015 SP13R-020 SP13R-025 SP13R-032 |
| S | Platinum vs Platinum-10% Rhodium | 0.03 (0.001) 0.05 (0.002) 0.08 (0.003) 0.13 (0.005) 0.20 (0.008) 0.25 (0.010) 0.38 (0.015) 0.51 (0.020) 0.64 (0.025) 0.81 (0.032) | SP10R-001 SP10R-002 SP10R-003 SP10R-005 SP10R-008 SP10R-010 SP10R-015 SP10R-020 SP10R-025 SP10R-032 |
| B | Platinum-6% Rhodium vs Platinum-30% Rhodium | 0.20 (0.008) 0.25 (0.010) 0.38 (0.015) 0.51 (0.020) 0.81 (0.032) | SP30R-008 SP30R-010 SP30R-015 SP30R-020 SP30R-032 |
Note: Published price is based on market value at time of printing and is subject to change due to precious metal market fluctuations.
Note: Metric dimensions are approximate
View the Thermocouple Accuracy and Color Code charts
Rated 3 out of
5
by
Watson from
Good thermocouple
Good product. Make sure you order this very far in advance of when you need it. And don't bother paying for fast shipping, I ordered with 3 day shipping and it took over a month to arrive.
Date published: 2017-04-16
Rated 3 out of
5
by
Paul from
make sure you know what you are getting
This is two separate spools of TC wire that need to be welded togeather to make a thermocouple. This is not a bare thermocouple that just needs insulation and connection to a barrier strip or connector.
Date published: 2017-01-10
Rated 5 out of
5
by
dfcortesv from
Flame Temperature
This product was an excellent bought and works perfectly with my experiment, I am diagnosticating flame temperatures.
Date published: 2018-08-02
Is 32 awg type B wire suitable for temperatures at 1500°C + or - 50°C continuously? If not what is the minimum wire gauge you would recommend for that temperature range?
Omega sells .032" diameter which is 20 AWG which would be good to 1700C as well as 24 AWG. Type B is good for the high temperatures but the -50C could be problematic because many instruments do not actually start reading until the Thermocouple sees several hundred degrees.
Date published: 2021-06-16
This is $4.38 per 1 roll of 50 inches?
Hi, thanks for your question. The price is per inch. $4.38/inch. If there is anything further we can help with, please let us know.
Date published: 2019-06-26
The price above shows $56.49 for each of SP30R-020. Please clarify if this price is per roll or per inch? If it is per roll, what will be the length of the roll.
That price would be per inch. As stated in the Data Sheet in fine print: "Ordering unit of measure is double inch. A double inch is 25 mm (1") of positive and 25 mm (1") of matching negative wire."
Date published: 2020-11-30
