Exotic Thermocouple Probes for Measuring Temperatures up to 4200°F
XTA / XMO / XPA / XIN
NEWPORT®
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 nylon connector, or transition joint with 72-inch lead
wire.
| Sheaths |
 |
Tantalum |
|
Molybdenum
|
|
Platinum/Rhodium |
|
Inconel
600 |
| Thermocouple
Elements |
|
Tungsten/Rhenium |
|
Platinum/Rhodium |
|
Insulations |
|
Hafnium Oxide
(HfO2) |
|
Magnesia
(MgO) |
|
Alumina
(Al2O3) |
|
 |
Termination
Style Q
Type OGP heavy-duty, color-coded male and female connectors. |
|
Termination
Style SX
Type SHX miniature high temperature ceramic male and female
connectors with color identification dot.
|
Termination
Style TJ
Heavy-duty transition termination with 72-inch leads. |
|
Termination
Style RP
Replacement probe style with 1" bare wire leads. |
Termination
Style HX
Type NHX high temperature ceramic male and female connectors
with color identification dot. |
|
|
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
Resisteance 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.
Molybdenum sheathed probes are not recommended in applications where they will be
exposed to carbon, including graphite.
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 Reducation 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 55 to 110°C (100 to 200°F)
higher.
|
Calibration
|
Atmoshpere
|
Sheath & Insulation
|
Max. Temp1
|
Model No.
|
|
C
W-5% Re
vs. W-26% Re
|
Vacuum
|
Tantalum Sheath
Hafnia Insulation
|
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
|
Vacuum
|
Tantalum Sheath
Magnesia Insulation
|
1475°C
2700°F
|
XTA-P13R-U-062-30-M-(*)-(**)
XTA-P13R-U-125-24-M-(*)-(**)
|
|
Tantalum Sheath
Hafnia Insulation
|
XTA-P13R-U-062-30-H-(*)-(**)
XTA-P13R-U-125-24-H-(*)-(**)
|
C
W-5% Re
vs. W-26% Re
|
Inert
Vacuum
Reducing
|
Molybdenum Sheath
Hafnia Insulation
|
2200°C
4000°F
|
XMO-W5R26-U-125-30-H-(*)-(**)
XMO-W5R26-U-250-30-H-(*)-(**)
|
|
C
W-5% Re
vs. W-26% Re
|
Inert
Vacuum
Reducing
|
Molybdenum Sheath
Alumina Insulation
|
1540°C
2800°F
|
XMO-W5R26-U-062-40-A-(*)-(**)
XMO-W5R26-U-125-30-A-(*)-(**)
XMO-W5R26-U-250-30-A-(*)-(**)
|
|
R***
Pt-13% Rh
vs. Pt
|
Inert
Vacuum
Reducing
|
Molybdenum Sheath
Alumina Insulation
|
1480°C
2700°F
|
XMO-P13R-U-125-30-A-(*)-(**)
XMO-P13R-U-250-24-A-(*)-(**)
|
|
C
W-5% Re
vs. W-26% Re
|
Oxidizing
Inert
Vacuum
|
Platinum-Rhodium Alloy Sheath
Alumina Insulation
|
1540°C
2800°F
|
XPA-W5R26-U-125-30-A-(*)-(**)
|
|
R***
Pt-13% Rh
vs. Pt
|
Oxidizing
Inert
Vacuum
|
Platinum-Rhodium Alloy Sheath
Magnesia Insulation
|
1480°C
2700°F
|
XPA-P13R-U-062-30-M-(*)-(**)
XPA-P13R-U-125-25-M-(*)-(**)
|
Platinum-Rhodium Alloy Sheath
Alumina Insulation
|
XPA-P13R-U-125-30-A-(*)-(**)
|
|
C
W-5% Re
vs. W-26% Re
|
Oxidizing
Inert
Vacuum
|
Inconel 600 Sheath
Magnesia Insulation
|
1150°C
2100°F
|
XIN-W5R26-U-062-30-M-(*)-(**)
XIN-W5R26-U-125-30-M-(*)-(**)
|
|
R***
Pt-13%
Rh
vs. Pt
|
Oxidizing
Inert
Vacuum
|
Inconel 600 Sheath
Magnesia Insulation
|
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-(*)-(**)
|
*** For type S, replace
“P13R” with “P10R”. For type B, replace “P13R” with “P30R”.
For type G, replace “W5R26” with “WOR26”. For type D, replace “W5R26” with “W3R25”. No additional charge.
* Specify Termination Style: Q (type OGP quick disconnect), TJ (transition junction),
HX (NHX ceramic connector), SX (SHX mini ceramic connector), or RP (replacement probe style with bare leads)
** Specify Probe Length in inches
Part Number Explanation
|
XTA
|
W5R26
|
U
|
062
|
30
|
H
|
RP
|
7
|
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
|
| 1.
Sheath Material: Tantalum |
5.
Thermocouple Wire Gage: 30 AWG |
| 2.
Calibration: W5% Re vs. W-26% Re |
6.
Insulation: H, HfO2 |
| 3.
Measuring Junction: Ungrounded |
7.
Termination: RP, Standard |
| 4.
Sheath Diameter: 0.062" |
8.
Length: 7" |
|
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|
|
|
† All dollar amounts on this site are shown in US currency.
Note: Prices subject to change. Please consult the Sales Department for accurate pricing.
Note 1: Maximum service temperatures shown are for probes with the largest available gage wire leads. Consult Engineering for ratings of other dimension probes.
Note 2: XPA and XIN sheathed probes with platinum elements can be bent in the field. Tantalum sheathed probes can be bent, but this must be done at the factory. if the customer chooses to bend a probe himself, all warranties are voided.
Note 3: Some probes available in dual configurations. Check with Sales Department.
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Part Number Builder |
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Option Descriptions
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(1)
|
Sheath Material
|
| |
Select
XTA for Tantalum
XMO for Molybdenum
XPA for Platinum Rhodium Alloy
XIN for Inconel 600
|
(2)
|
Thermocouple Type
|
| |
Select
W5R26 for Type C (W/5%Re-W/26%Re)
W3R25 for Type D (W/3%Re-W/25%Re)
W0R26 for Type G (W-W/26%Re)
P13R for Type R (Pt/13%Rh-Pt)
P10R for Type S (Pt/10%Rh-Pt)
P30R for Type B (Pt/30%Rh-Pt/6%Rh)
|
(3)
|
Sheath Diameter
|
| |
Select
250 for 1/4 inch
187 for 3/8 inch
125 for 1/8 inch
062 for 1/16 inch
|
(4)
|
Thermocouple Wire Gage (AWG)
|
| |
Select
40 for 40 AWG
30 for 30 AWG
26 for 26 AWG
24 for 24 AWG
20 for 20 AWG
|
(5)
|
Insulation
|
| |
Select
A for Alumina (Al2O3)
H for Hafnia (HfO2)
M for Magnesia (MgO)
|
(6)
|
Termination
|
| |
Select
RP for Replacement Probe
Q for OGP heavy duty connector
TJ for heavy duty transition junction
HX for NHX ceramic connector
SX for SHX miniature ceramic connector
|
(7)
|
Length
|
| |
Select
6 for 6 inches
12 for 12 inches
|
| NOTE: All combinations may not be valid, check spec sheet for valid part numbers. |
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