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- J-Type Thermocouple
- Iron-constantan thermocouple with a temperature range of 0° to 750°C.
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- Joint Industrial Standards (JIS)
- A Japanese agency that establishes and maintains standards
for equipment and components. Also known as JISC, its function is similar to
Germany's Deutsche Industrial Norm (DIN).
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- Junction
- The point where two dissimilar metal conductors join to form
a thermocouple.
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- Junction, Cold
- Connection point between thermocouple metals and the
electronic instrument. See reference junction.
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- Junction, Exposed
- A type of thermocouple probe in which the hot, or measuring,
junction protrudes beyond the sheath material and is fully
exposed to the substance being measured. It usually gives the
fastest response time. No electrical isolation provided.
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- Junction, Grounded
- Type of thermocouple probe in which the hot, or measuring
junction, is an integral part of the sheath material. No
electrical isolation is provided.
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- Junction, Hot
- The thermocouple junction that is affixed to or inserted
into the material being measured. Also called the measuring junction.
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- Junction, Isolated
- A form of thermocouple probe construction in which the
measuring junction is fully enclosed in a protective sheath and
electrically isolated from it. Commonly called an ungrounded
junction.
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- Junction, Reference
- The junction in a thermocouple circuit held at a stable,
known temperature (cold junction). Standard reference
temperature is 32ºF (0ºC).
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