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Very High Temperature Exotic Thermocouple Probes

XTA, XMO, XPA, XIN Series

High Temperature Exotic Thermocouple Probes, Tantalum, Molybdenum, Platinum/Rhodium | XTA, XMO, XPA, XIN Series

See All Models Below

  • 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!
Thermocouples - View related products

Description

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
CodeMaterialMax.
Operating
Temp.
Working
Environment
Approx.
Melting
Point
Remarks
XTATantalum2300°C
4200°F
Vacuum3000°C
5425°F
Resists Many Acids
and Weak Alkalies.
Very Sensitive to
Oxidation Above 570°F
XMO*Molybdenum2200°C
4000°F
Inert
Vacuum
Reducing
2610°C
4730°F
Sensitive to Oxidation
Above 400°F
Non-bendable
XPAPlatinum-
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.
XINInconel
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
*Refractory metals are extremely sensitive to any trace of oxygen above approximately 260°C
(500°F). Must be used in vacuum or in very pure inert gases such as Hellium or Argon.


Insulation Materials
CodeMaterialMax.
Operating
Temp.**
Approx.
Melting
Point
Remarks
HHafnia
(HfO2)
2500°C
4530°F
2830°C
5125°F
Nontoxic substitute for BeO.
High Thermal Conductivity.
MMagnesia
(MgO)
1650°C
3000°F
2790°C
5050°F
Hygroscopic.
Compacts Well.
AAlumina
(Al2O3)
1540°C
2800°F
2010°C
3650°F
Requires Considerable
Volume Reduction to
Compact Satisfactorily.
Note:
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.

Calibration1 Atmosphere2
Max.Temp3
Model Number
C
W-5% Re
vs. W-26% Re
V.
2300°C
4200°F
XTA-W5R26-U-062-30-H-*-**
XTA-W5R26-U-125-30-H-*-**
XTA-W5R26-U-125-24-H-*-**
R*
Pt-13% Rh
vs. Pt
V.
1475°C
2700°F
XTA-P13R-U-062-30-M-*-**
XTA-P13R-U-125-24-M-*-**
XTA-P13R-U-062-30-H-*-**
XTA-P13R-U-125-24-H-*-**
C
W-5% Re
vs. W-26% Re
I.V.R.
2200°C
4000°F
XMO-W5R26-U-125-30-H-*-**
XMO-W5R26-U-250-30-H-*-**
C
W-5% Re
vs.W-26% Re
I.V.R.
1540°C
2800°F
XMO-W5R26-U-250-30-A-*-**
XMO-W5R26-U-062-40-A-*-**
XMO-W5R26-U-125-30-A-*-**
R*
Pt-13% Rh
vs. Pt
I.V.R.
1480°C
2700°F
XMO-P13R-U-125-30-A-*-**
XMO-P13R-U-250-24-A-*-**
C
W-5% Re
vs. W-26% Re
O.I.V.
1540°C
2800°F
XPA-W5R26-U-125-30-A-*-**
R*
Pt-13% Rh
vs. Pt
O.I.V.
1480°C
2700°F
XPA-P13R-U-062-30-M-*-**
XPA-P13R-U-125-24-M-*-**
XPA-P13R-U-125-30-A-*-**
C
W-5% Re
vs. W-26% Re
O.I.V.
1150°C
2100°F
XIN-W5R26-U-062-30-M-*-**
XIN-W5R26-U-125-30-M-*-**
R*
Pt-13% Rh
vs. Pt
O.I.V.
870°C
1600°F
XIN-P13R-U-062-30-M-*-**
XIN-P13R-U-125-30-M-*-**
XIN-P13R-U-125-24-M-*-**
XIN-P13R-U-187-24-M-*-**
XIN-P13R-U-250-24-M-*-**
XIN-P13R-U-250-20-M-*-**
* Specify Termination Style: Q, TJ, HX, SX, or RP
** Specify Probe Length in inches


  
Note 1:   Prices subject to change
Please consult the Sales
Department for current pricing.
Note 2:   Atmospheres:
  O-Oxidizing
   I-Inert
   V-Vacuum
   R-Reducing.
Note 3:   Maximum service temperatures shown are for probes with the largest available gage wire leads. Consult Engineering for ratings of other dimension probes.
Note 4:   Bending: XPA sheathed probes with platinum elements be bent in the field.
Note 5:   Some probes available in dual configurations. Check with Sales Department.
(Specify Model Number)
Part Number/Desc.
Qty
Description
Example part numbers are shown below. Use the box below to order specific models
Tantalum Sheath
XTA-W5R26-U-125-30-H-MQ-6
TWD17,972
Availability: 5 weeks
 
Thermocouple Type C, W-5% Re vs. W-26% Re, Tantalum Sheath, Ungrounded Junction, 0.125 inch sheath diameter, 30 AWG wire, Hafnium Oxide (HFO2) Insulation, HMPW Miniature Connector, 6 inch length
XTA-W5R26-U-250-24-H-Q-14
TWD50,065
Availability: 5 weeks
 
Thermocouple Type C, W-5% Re vs. W-26% Re, Tantalum Sheath, Ungrounded Junction, 0.250 inch sheath diameter, 24 AWG wire, Hafnium Oxide (HFO2) Insulation, HSTW Standard Connector, 14 inch length
XTA-W5R26-U-062-30-H-MQ-6
Consult Sales  
Availability: 
 
 
Thermocouple Type C, W-5% Re vs. W-26% Re, Tantalum Sheath, Ungrounded Junction, 0.062 inch sheath diameter, 30 AWG wire, Hafnium Oxide (HFO2) Insulation, HMPW Miniature Connector, 6 inch length
Molybdenum Sheath
XMO-W5R26-U-187-24-A-Q-72
TWD117,975
Availability: 5 weeks
 
Thermocouple Type C, W-5% Re vs. W-26% Re, Molybdenum Sheath, Ungrounded Junction, 0.187 inch sheath diameter, 24 AWG wire, Alumina (Al2O3) Insulation, HSTW Standard Connector, 72 inch length
XMO-W5R26-U-062-40-A-Q-36
TWD38,074
Availability: 5 weeks
 
Thermocouple Type C, W-5% Re vs. W-26% Re, Molybdenum Sheath, Ungrounded Junction, 0.062 inch sheath diameter, 40 AWG wire, Alumina (Al2O3) Insulation, HSTW Standard Connector, 36 inch length
XMO-W3R25-U-125-30-H-Q-27.5
TWD51,370
Availability: 5 weeks
 
Thermocouple Type D, W-3% Re vs. W-25% Re, Molybdenum Sheath, Ungrounded Junction, 0.125 inch sheath diameter, 30 AWG wire, Hafnium Oxide (HFO2) Insulation, HSTW Standard Connector, 27.5 inch length
Platinum-Rhodium Alloy Sheath
XPA-P30R-U-062-30-M-RP-6.150
Consult Sales  
Availability: 
 
 
Thermocouple Type B, Pt-30% Rh vs. Pt, Platinum-Rhodium Alloy Sheath, Ungrounded Junction, 0.062 inch sheath diameter, 30 AWG wire, Magnesia (MgO) Insulation, Replacement Probe, 6.150 inch length
XPA-W5R26-U-125-30-A-HX-6
Consult Sales  
Availability: 
 
 
Thermocouple Type C, W-5% Re vs. W-26% Re, Platinum-Rhodium Alloy Sheath, Ungrounded Junction, 0.125 inch sheath diameter, 30 AWG wire, Alumina (Al2O3) Insulation, NHX High Temperature Ceramic Connector, 6 inch length
XPA-P13R-U-062-30-M-TJ-6
TWD123,505
Availability: 5 weeks
 
Thermocouple Type R, Pt-13% Rh vs. Pt, Platinum-Rhodium Alloy Sheath, Ungrounded Junction, 0.062 inch sheath diameter, 30 AWG wire, Magnesia (MgO) Insulation, Heavy-Duty Transition Termination, 6 inch length
Inconel 600 Sheath
XIN-P13R-U-125-30-A-TJ-24-DUAL
Consult Sales  
Availability: 
 
 
Thermocouple Type R, Pt-13% Rh vs. Pt, Inconel 600 Sheath, Ungrounded Junction, 0.125 inch sheath diameter, 30 AWG wire, Alumina (Al2O3) Insulation, Heavy-Duty Transition Termination, 24 inch length, Dual Element
XIN-P13R-U-062-30-M-SX-26
Consult Sales  
Availability: 
 
 
Thermocouple Type R, Pt-13% Rh vs. Pt, Inconel 600 Sheath, Ungrounded Junction, 0.062 inch sheath diameter, 30 AWG wire, Magnesia (MgO) Insulation, SHX Miniature High Temperature Ceramic Connector, 26 inch length
XIN-P10R-U-062-30-M-TJ-6
Consult Sales  
Availability: 
 
 
Thermocouple Type S, Pt-10% Rh vs. Pt, Inconel 600 Sheath, Ungrounded Junction, 0.062 inch sheath diameter, 30 AWG wire, Magnesia (MgO) Insulation, Heavy-Duty Transition Termination, 6 inch length
Sold Separately, Mating Connector & clamp & other accessory Part Number
HSTW-C-F
TWD845
Availability: 5 weeks
 
Termination Style Q Mating Connector
HSTW-R-F
Consult Sales  
Availability: 
 
 
Termination Style Q Mating Connector
NHX-C-F
TWD678
Availability: 4 weeks
 
Termination Style HX Mating Connector
NHX-R-F
Consult Sales  
Availability: 
 
 
Termination Style HX Mating Connector
HMPW-C-F
TWD446
Availability: 5 weeks
 
Termination Style MQ Mating Connector
HMPW-R-F
Consult Sales  
Availability: 
 
 
Termination Style MQ Mating Connector
SHX-C-F
TWD476
Availability: 4 weeks
 
Termination Style SX Mating Connector
SHX-R-F
Consult Sales  
Availability: 
 
 
Termination Style SX Mating Connector
PCLM-SMP
TWD62
Availability: 2 weeks
 
Cable Clamp for HMPW
PCLM
TWD62
Availability: 1 week
 
Cable clamp for HSTW
PCLM-NHX
TWD117
Availability: 1 week
 
cable clamp for NHX
PCLM-SHX
TWD62
Availability: 1 week
 
Cable clamp for SHX
SMCL
TWD66
Availability: 1 week
 
Safety clip, HMPW
SFCL
TWD129
Availability: 1 week
 
Safety clip for HSTW
HTCL
TWD123
Availability: 1 week
 
Safety clip for NHX

Order By Part Number

Part Number
Qty
Part Number
Qty


All prices on this site are shown in Taiwan Dollars.
Note:
Note 1: Prices subject to change. Please consult the Sales Department for accurate pricing.
Note 2: Atmospheres:
      O-Oxidizing
      I-Inert
      V-Vacuum
      R-Reducing
Note 3: Maximum service temperatures shown are for probes with the largest available gage wire leads. Consult Engineering for ratings of other dimension probes.
Note 4: Bending: XPA sheathed probes with platinum elements can be bent in the field.
Note 5: Some probes available in dual configurations. Check with Sales Department.
We noticed you are from the US. Visit your local site for regional offers and live support.