Products

High Temperature Metal Sheathed Thermocouples (Type 27)

with Miniature Socket

These high temperature thermocouples are used in applications where other thermocouples would fail due to excessive heat or severe environments. Utilising specialist exotic sheath materials such as Platinum 10% Rhodium, Molybdenum and Tantalum they can be used in service temperatures up to 2300°C. The combination of conductor, insulation material and sheath must be carefully selected to suit your process environment, service temperature and installation requirements (i.e. whether the probe is flexible or not). Our experienced sales team are on hand to assist where needed, so please do not hesitate to contact us if help is required.
  • Typically used with high temperature thermocouple types R, S, B, C and D
  • Temperatures up to 2200°C (continuous use) or 2300°C (short term use)
  • Semi-Rigid (mineral insulated) and Rigid (tube) styles available
  • Terminated in a miniature flat pin socket, rated to 220°C, 300°C. 425°C or 600°C
  • Calibration service for oxidizing and inert environments is available up to 1600°C

Code Sheath Material Operational Properties MI (Semi-Rigid)
Tube (Rigid)
Insulation Material Thermocouple Types Available Sheath Diameters (mm) Max.
Continuous Temperature
600

Inconel 600®

Suitable for use in inert, vacuum and oxidizing environments.
Minimum bend radius: 5 x sheath diameter.

Not recommended for use above 800°C in oxidising atmospheres. Do not use in sulphur bearing atmospheres above 550°C.
Semi-Rigid MgO R, S and B 1.0mm, 1.5mm, 3.0mm, 3.2mm, 4.8mm, 6.0mm and 6.4mm 1175°C
600T Inconel 600® As above. Do not bend. Rigid Al2O3 R, S and B 3.0mm, 3.2mm, 4.8mm, 6.0mm and 6.4mm 1175°C
P10R Platinum 10% Rhodium Suitable for use in inert and oxidizing environments.
Minimum bend radius: 10 x sheath diameter.
Semi-Rigid MgO R, S and B 1.0mm, 1.5mm and 1.6mm 1550°C
TAN Tantalum Suitable for use in inert and vacuum environments.
Minimum bend radius: 5 x sheath diameter.
Semi-Rigid MgO, Al2O3, HfO2 R, S, B, C and D 1.0mm, 1.5mm, 1.6mm, 3.0mm and 3.2mm 2200°C
NIO Niobium 1% Zirconium Suitable for use in inert and vacuum environments.
Minimum bend radius: 10 x sheath diameter.
Semi-Rigid MgO, Al2O3, HfO2 R, S, B, C and D 1.6mm and 3.2mm 2200°C
MOL Molybdenum Suitable for use in inert, vacuum and reducing environments.
Do not bend.
Rigid MgO, Al2O3, HfO2 R, S, B, C and D 1.5mm, 1.6mm, 3.0mm, 3.2mm, 4.8mm, 6.0mm
and 6.4mm
2000°C
CMOL Coated Molybdenum Suitable for use in inert and oxidizing environments.
Do not bend.
Rigid MgO, Al2O3, HfO2 C and D 1.5mm, 1.6mm, 3.0mm, 3.2mm and 6.4mm 1600°C

Enquiry Form

1. Thermocouple Type


2. Sheath Material (see above)


3. Insulation Material


4. Sheath Diameter


5. Sheath Length


 mm

6. Types of Sensing Junction


Illustration Select
INSULATED Junction
GROUNDED Junction
Duplex Element Required? (please tick box)

7. Miniature Socket Style


Illustration Select
3P7M - Miniature Socket
Plastic, rated to 220ºC
3P7MH - Miniature Socket
Plastic, rated to 300ºC (normal)
3P7MUH - Miniature Socket
Plastic, rated to 425ºC
3P7MC - Miniature Socket
Ceramic - rated to 600ºC

8. Quantity Required


Contact Details


Company Name


Your Name


Title/Dept.


Email


Telephone


Additional Information


If your enquiry is for more than one style of sensor, please email us with your requirements or use the box below



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Thermocouple Sensors
Mineral Insulated Thermocouples
Thermocouples with Mini Plug
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High Temperature Thermocouples
General Purpose Thermocouples
ATEX/IECex Thermocouple Sensors
Ceramic Thermocouple Sensors
Fast Response Thermocouple Sensors
Autoclave Thermocouple Sensors
Surface Measurement Thermocouple Sensors
FEP Insulated Thermocouple

Platinum Resistance Thermometers
Mineral Insulated RTD Pt100 Sensors
Rigid Stem RTD Pt100 Sensors
Hand Held RTD Pt100 Sensors
Surface Measurement RTD Pt100 Sensors
RTD Pt100 Sensors with Cable
RTD Pt100 Sensors with Mini Plug
Autoclave RTD Pt100 Sensors
RTD Pt100 with Terminal Head
ATEX/IECex Platinum Resistance Thermometers
Fast Response RTD Pt100 Sensors
Air Temperature RTD Pt100 Sensors
Magnetic RTD Pt100 Sensors
Cable
PVC Single Pair Thermocouple Cable
PFA Single Pair Thermocouple Cable
Fibreglass Single Pair Thermocouple Cable
PVC Multipair Thermocouple Cable
PFA Multipair Thermocouple Cable
Fibreglass Multipair Thermocouple Cable
PVC RTD Pt100 Cable
PFA RTD Pt100 Cable
Fibreglass RTD Pt100 Cable

Miniature Thermocouple Connectors
Mini Thermocouple Connectors – 220ºC Rated
Mini Thermocouple Connectors – 350ºC Rated
Mini Thermocouple Connectors – 650ºC Rated
Mini Thermocouple Connector Accessories
Mini Thermocouple Connector Panels
Mini Three Pin Connectors

Standard Thermocouple Connectors
Standard Thermocouple Connectors – 220ºC
Standard Thermocouple Connectors – 350ºC Rated
Standard Thermocouple Connectors – 650ºC Rated
Standard Thermocouple Connector Accessories
Standard Thermocouple Connector Panels
Standard Three Pin Connectors
Instrumentation
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Temperature Accessories
Compression Fittings
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Calibration
UKAS Calibration Services

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Pressure Transmitters


© 1998- TC Ltd., PO Box 130, Uxbridge, UB8 2YS, United Kingdom.
Tel.: 01895 252222, Fax: 01895 273540, Email: info@tc.co.uk
© 1998- TC Ltd., PO Box 130, Uxbridge, UB8 2YS, United Kingdom.
Tel.: 01895252222, Fax: 01895 273540, Email: info@tc.co.uk



1 Thermocouple Type Temperature Range (continuous) Temperature Range
(short term)
R Platinum - 13% Rhodium vs
Platinum
0°C to +1600°C -50 to +1750°C
S Platinum - 10% Rhodium vs
Platinum
0°C to +1550°C -50 to +1700°C
B Platinum - 30% Rhodium vs
Platinum 6% Rhodium
+100 to +1600°C +100 to +1820°C
C Tungsten - 5% Rhenium vs
Tungsten - 26% Rhenium
0 to +2200°C 0 to +2300°C
D Tungsten - 3% Rhenium vs
Tungsten - 25% Rhenium
0 to +2200°C 0 to +2300°C
Temperature ranges refer to the thermocouple type.
The temperature range of the sensor may deviate from the above,
please refer to the product description for more details
2 Insulation Material Comments Max.
Temperature
MGO

Magnesium Oxide
MgO

Very hygroscopic. Used mostly in compacted sheaths. 1700°C
ALO Aluminium Oxide
Al2O3
Excellent with Platinum alloys. 1550°C
HFO Hafnium Oxide
HfO3
Comparible to Berylium Oxide and safe to handle. 2200°C
* Please refer to the Sheath Material table above for applicable diameters

INSULATED
Hot junction insulated from sheath. Gives floating output with typical insulation resistance in excess of 100 megohms

GROUNDED
Hot junction welded to sheath tip giving earthed output and faster response to temperature changes