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Very High Temperature Thermocouple Probes

XTA, XMO, XPA, XIN Series

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Very High Temperature Thermocouple Probes
XTA, XMO, XPA, XIN Series  : Very High Temperature Thermocouple Probes

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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)

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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 2 metre long 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 300°C
XMO*Molybdenum2200°C
4000°F
Inert
Vacuum
Reducing
2610°C
4730°F
Sensitive to Oxidation
Above 200°C
Non-bendable
XPAPlatinum-
Rhodium
Alloy
1650°C
3000°F
Oxidizing
Inert
1870°C
3400°F
No Attack by SO2
at 1100°C. 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 Sulphur
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 40 to 90°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 Sales Department for Pricing and Delivery on Tungsten Coated Molybdenum sheathed T hermocouples.

Termination Style Q
Type OGP heavy-duty, colour-coded male and female connectors.
Termination Style TJ
Heavy-duty transition termination with 2 metre long leads.
Termination Style HX
Type NHX high temperature ceramic male and female connectors with colour identification dot.
Termination Style SX
Type SHX miniature high temperature ceramic male and female connectors with colour identification dot.
Termination Style RP
Replacement probe style with 25mm long bare wire leads.

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-187-26-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 gauge wire leads. Consult Engineering for ratings of other dimension probes.
Note 4:   Bending: XPA and XIN sheathed probes with platinum elements be bent in the field.
Note 5:   Some probes available in dual configurations. Check with Sales Department.




To Order (Specify Model Number)    
     Part Number     Availability   Price   Description      Qty   
 Example part numbers are shown below. Use the box below to order specific models
 XMO-W5R26-U-125-30-H-HX-6   3 Weeks   GBP 175.00    Type C Thermocouple. 1/8" dia 6" long molybdenum sheath with Hafnia insulation and standard size ceramic connectors    
 XMO-W5R26-U-062-40-A-Q-24   In Stock In Stock   GBP 310.00    Type C Thermocouple. 1/16" dia 24" long molybdenum sheath with Alumina insulation and standard size plastic connectors    
 XMO-W5R26-U-062-40-A-Q-36   In Stock In Stock   GBP 448.00    Type C Thermocouple. 1/16" dia 36" long molybdenum sheath with Alumina insulation and standard size plastic connectors    

  To place an order or recieve a price quote enter the part numbers below and continue with the order.
  Sales will confirm pricing and availablility through email.
  The order will NOT be processed until you accept the price and availability.
 
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Note:

Note 1: Prices subject to change due to precious metal market fluctuations. 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 gauge wire leads. Consult sales for ratings of other dimension probes.
Note 4: Bending: XPA and XIN sheathed probes with platinum elements can be bent in the field.
Note 5: Some probes available in dual configurations. Check with Sales Department.

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General Thermocouple Specifications General Thermocouple Specifications:
Color Codes for Thermocouples, Wire and Connectors, tolerances, special limits of error, reference guide
   
Keywords:Tungsten Coated Thermocouples . Very High Temperature Exotic Thermocouple Probes, Tantalum, Molybdenum, Platinum/Rhodium, Inconel 600 Sheaths, Tungsten/Rhenium and Platinum/Rhodium Thermocouple Elements, Berylia, Magnesia, Alumina I

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