THERMOCOUPLES
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THERMOCOUPLES |
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Thermocouples utilise the Seebeck effect - that the difference in temperature between two junctions of dissimilar metals or alloys in the same circuit will produce an EMF in that circuit. To function correctly, a thermocouple needs two junctions; a measuring junction and a reference junction. In practice the reference or cold junction is usually provided within the measuring instrument. If a thermocouple is to be extended, wire of the same composition as the thermocouple or special compensating cables must be used to avoid errors in readings. Whilst any combination of metals will produce an EMF, certain types that produce significant mV EMFs have evolved as standards. Each of these has its own operating temperature range and accuracy :- |
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THERMOCOUPLE SELECTION GUIDE |
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These thermocouples are suitable for use
as inputs to our range of analogue
on/off controllers, digital on/off
controllers and PID temperature
controllers.
 
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GENERAL PURPOSE SHEATHED THERMOCOUPLES | |
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Our general purpose thermocouples are sheathed in 316 stainless steel in a choice of sizes and have a maximum operating temperature of 400șC. They are available in any combination of the following options. If the type of thermocouple you are looking for is not covered here then please get in touch as we have an enormous range of special types available. We can also supply compensating cable for extension purposes.
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MINERAL INSULATED THERMOCOUPLES | |
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Mineral insulated (MI) thermocouples are designed for high temperature applications and are housed in stainless steel or high temperature alloy sheaths. They are available in any combination of the following options. If the type of thermocouple you are looking for is not covered here then please get in touch as we have an enormous range of special types available. We can also supply compensating cable for extension purposes. | |
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