
Extreme Temperature Exotic Thermocouple Probes
Very High Temperature Exotic Thermocouple ProbesQuantity | Price each |
---|---|
1-9 | $611.69 |
10-24 | $581.11 |
25-99 | $550.52 |
100-499 | $519.94 |
500-999 | $489.35 |
1000+ | $458.77 |
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- Sheaths
• Tantalum
• Molybdenum
• Platinum/Rhodium
• Inconel 600 - Thermocouple Elements
• Tungsten/Rhenium
• Platinum/Rhodium - Insulations
• Hafnium Oxide (HfO2)
• Magnesia (MgO)
• Alumina (Al2O3) - Mating Connector Sold Separately!
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Product Specs
OMEGA™ Exotic Thermocouple Probes are designed for use in extreme temperatures, up to 2315°C (4200°F). These probes utilize either Platinum/Rhodium (types R, S, or B) or Tungsten/Rhenium (types G, C, or D) elements, with a variety of insulations and sheath materials. Depending upon the sheath material selected, these probes may be used in inert, oxidizing, reducing or vacuum conditions. The maximum temperature is based on the lowest max. temperature of the element, insulation and sheath material. Five cold end probe terminations are available: replacement probe, subminiature or standard size ceramic connector, heavy-duty standard size, molybdenum-sheathed nylon connector, or transition joint with 72-inch lead wire.
Sheath Materials
Code | Material | Max. Operating Temp. | Working Environment | Approx. Melting Point | Remarks |
XTA | Tantalum | 2300°C 4200°F | Vacuum | 3000°C 5425°F | Resists Many Acids and Weak Alkalies. Very Sensitive to Oxidation Above 570°F |
XMO* | Molybdenum | 2200°C 4000°F | Inert Vacuum Reducing | 2610°C 4730°F | Sensitive to Oxidation Above 400°F Non-bendable |
XPA | Platinum- Rhodium Alloy | 1650°C 3000°F | Oxidizing Inert | 1870°C 3400°F | No Attack by SO2 at 2000°F. Silica Is Detrimental. Halogens Attack at High Temp. |
XIN | Inconel 600 | 1150°C 2100°F | Oxidizing Inert Vacuum | 1400°C 2550°F | Excellent Resistance to Oxidation at High Temp. Hydrogen Tends to Embrittle. Very Sensitive to Sulfur Corrosion |
(500°F). Must be used in vacuum or in very pure inert gases such as Hellium or Argon.
Insulation Materials
Code | Material | Max. Operating Temp.** | Approx. Melting Point | Remarks |
H | Hafnia (HfO2) | 2500°C 4530°F | 2830°C 5125°F | Nontoxic substitute for BeO. High Thermal Conductivity. |
M | Magnesia (MgO) | 1650°C 3000°F | 2790°C 5050°F | Hygroscopic. Compacts Well. |
A | Alumina (Al2O3) | 1540°C 2800°F | 2010°C 3650°F | Requires Considerable Volume Reduction to Compact Satisfactorily. |
For temperatures above 1000°C (1800°F), all insulating materials experience a
substantial decrease in resistivity with increasing temperatures.
** Values given are for compacted insulation. For uncompacted hard-fired insulators,
useful temperature range can be 5 to 110°C (100 to 200°F) higher.
Molybdenum sheathed probes are not recommended in applications where they will be
exposed to carbon, including graphite.
For Graphite environments, Consult Omega's Custom Engineering Department for Pricing and Delivery on Tungsten Coated Molybdenum sheathed T hermocouples.
Termination Style Q
Type OGP heavy-duty, color-coded male and female connectors. Add $10 to base price.
Termination Style TJ
Heavy-duty transition termination with 72-inch leads. Add $13 to base price.
Termination Style HX
Type NHX high temperature ceramic male and female connectors with color identification dot. Add $17 to base price.
Termination Style SX
Type SHX miniature high temperature ceramic male and female connectors with color identification dot. Add $11 to base price.
Termination Style RP
Replacement probe style with 1" bare wire leads. No additional price.
** Specify Probe Length in inches | ![]()
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