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cold junction

   Also found in: Acronyms 0.01 sec.
cold junction [′kōld ′jəŋk·shən]
(electronics)
The reference junction of thermocouple wires leading to the measuring instrument; normally at room temperature.


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However, in industrial applications, a circuit known as a cold junction compensation circuit automatically accounts for the temperature of the reference junction.
On the other hand, the fact that in the case of inhomogeneous thermocouples the thermovoltage measured does not depend only on the temperatures of the hot and cold junctions, but also on the temperature response alongside the thermocouple, is often ignored [2].
Cold junction sensing is at the t/c point on the logger connector termination block, say JDL of Kensington House, 33 Imperial Square, Cheltenham Spa, Gloucestershire, tel:0124 267 3522.
 
 
 
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