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You are here → Home > Temperature Sensors > Thermocouples > Mineral Insulated Thermocouples > Thermocouple with Terminal Head

Thermocouple with terminal head

Mineral Insulated Thermocouples

Need a different terminal head? - click to view other options
MAA
MAA Micro Die Cast Alloy Head
for diameters 3.0mm to 6.0mm

Weatherproof die cast alloy, epoxy coated, screw down terminal head with tube entry and cable entry at a right angle to each other, with a ceramic terminal block. Suitable for simplex and duplex assemblies. Supplied with a 16mm x 1.5mm ISO metal pinch gland on the cable entry for cables from 4mm to 9.5mm diameter.
3P10
3P10 Miniature Die Cast Alloy Head
for diameters 3.0mm to 8.0mm

Weatherproof die cast alloy, epoxy coated, screw top terminal head with the tube entry and cable entry at a right angle to each other, with a ceramic terminal block. Suitable for simplex and duplex assemblies. Supplied with a 16mm x 1.5mm ISO metal pinch gland on the cable entry for cables from 3mm to 8mm diameter.
3P11
3P11 Standard Die Cast Alloy Head
for diameters 4.5mm to 10.8mm

Weatherproof die cast alloy, epoxy coated, screw top terminal head with the tube entry and cable entry at a right angle to each other, with a ceramic terminal block. Suitable for simplex, duplex and triplex assemblies. Supplied with a 20mm x 1.5mm ISO metal pinch gland on cable entry for cables from 6mm to 14mm diameter.
3P12
3P12 Heavy Duty Cast Iron Head
for diameters 4.5mm to 10.8mm

Weatherproof cast iron, screw top terminal head with the tube entry and cable entry at a right angle to each other, with ceramic terminal block. Suitable for simplex, duplex and triplex assemblies. Supplied with a 20mm x 1.5mm ISO metal pinch gland on cable entry for cables from 6mm to 14mm diameter.
3P16
3P16 Miniature Plastic Head
for diameters 3.0mm to 8.0mm

Weatherproof plastic, screw top terminal head with the tube entry and cable entry at a right angle to each other, with a plastic terminal block. Suitable for simplex and duplex assemblies. Supplied with a 16mm x 1.5mm ISO plastic pinch gland on cable entry for cables from 3mm to 8mm diameter.
3P17
3P17 Standard Plastic Head
for diameters 4.5mm to 10.8mm

Weatherproof plastic, screw top terminal head with the tube entry and cable entry at a right angle to each other, with a plastic terminal block. Suitable for simplex, duplex and triplex assemblies. Supplied complete with a 20mm x 1.5mm ISO plastic pinch gland on the cable entry for cables from 6mm to 14mm diameter.
3P18
3P18 Alloy Straight Through Head
for diameters 4.5mm to 10.8mm

Die cast alloy straight through terminal head with a bakelite terminal block. Suitable for simplex or duplex assemblies. Supplied with a 20mm x 1.5mm pitch ISO pinch gland on the cable entry for cables from 6mm to 14mm diameter. *If supported at fixing holes, suitable for diameters of 1mm and above.
3P19
3P19 Stainless Steel Head
for diameters 4.5mm to 10.8mm

Weatherproof stainless steel, screw top terminal head with the tube entry and cable entry at a right angle to each other, with a ceramic terminal block. Suitable for simplex, duplex and triplex assemblies. Supplied with a 20mm x 1.5mm ISO metal pinch gland on cable entry for cables from 6mm to 14mm diameter.
3P21
3P21 Dual Height, Flip Top Alloy Head
for diameters 4.5mm to 10.8mm

Mainly for use with duplex assemblies, where the extra height inside the lid allows for two transmitters (or one transmitter and one terminal block) to be mounted simultaneously. Supplied with a 20mm x 1.5mm ISO metal pinch gland on cable entry for cables from 6mm to 14mm diameter.
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Related Products

Thermocouple Linearised Head Mounting Transmitter Thermowells
  • Mineral insulated thermocouple sensors have a high integrity construction, suited to arduous operating conditions at temperatures from -200ºC to +1400ºC. (The maximum operating temperature is dependent on diameter and environmental factors, further guidance is available here.)
  • Custom built to your specification and terminated in a choice of terminal heads as shown above
  • Alternatively, we have a large range of sensors available to buy online in various diameters and lengths
  • High accuracy and stability maintained throughout the operating life of the sensor
  • Fast response and high insulation resistance
  • Available in thermocouple types K, T, J, N, E, R, S & B with sheath diameters from 4.5mm to 8.0mm and lengths from a few millimetres to 200 metres or more dependent on the sheath diameter selected

Thermocouple Quote Request

Use this form to configure a single sensor style. If you require multiple sensor styles, please list them in the Additional Information box at the end of the form or contact us for assistance.

1. Sensor Basics

Not sure which thermocouple type you need? View thermocouple types and temperature ranges

Need help choosing a tolerance class? See tolerance classes explained

Unsure which sheath material you need? View our thermocouple sheath material guidance page

mm
2. Sensing Junction
Insulated Junction
Insulated Junction
Hot junction insulated from sheath. Gives floating output with typical insulation resistance in excess of 100 megohms.
Recommended
Grounded Junction
Grounded Junction
Hot junction welded to sheath tip giving earthed output and faster response to temperature changes
Exposed Junction
Exposed Junction
Fastest response mainly for the measurement of air temperature in ducts. Restricted to a maximum operating temperature of 600ºC
Number of elements:
3. Optional Swaged Reduced Tip

A reduced tip is a short section at the end of the sensor sheath that is reduced to a smaller diameter. This can improve response time where faster temperature measurement is required. Select this option if you would like the probe tip reduced.

4. Optional 4 to 20mA Transmitter

Select this option if you would like the terminal head fitted with a 4 to 20mA temperature transmitter. Please enter the temperature range required, for example 0°C to 100°C.

5. Optional Compression Fitting
St.St. fitting
Stainless Steel
Brass fitting
Brass Fitting
6. Contact Details

Frequently Asked Questions

  • What is a thermocouple and how does it work?
    A thermocouple is a type of temperature sensor that generates a voltage when two different metals are joined at one end and exposed to a temperature difference between the "hot" junction (where the temperature is measured) and the "cold" junction (the reference point). This voltage is then measured to determine the temperature at the hot junction.
  • How do I choose the right thermocouple for my application?
    The ideal thermocouple depends on factors such as temperature range, accuracy, termination type, mounting requirements and environmental conditions. We offer a variety of thermocouples with different sheath materials, constructions, terminations, and temperature ratings to meet your needs. If you need specific advice, our engineers are happy to assist!
  • What is the maximum temperature rating of your thermocouples?
    Our thermocouples are designed to handle a wide range of temperatures with some mineral insulated thermocouples able to withstand temperatures up to 1400ºC and ceramic sheathed thermocouples going even higher to 1600ºC. Each product listing includes the maximum temperature rating, so you can choose the best thermocouple for your application.