Thermocouple grade wire is used to manufacture thermocouple probes. Thermocouple grade wire is normally used for the junction and inside the stem sheath. This is because the thermocouple grade wire has a accuracy specification than extension grade wire.
Compensating wire is a less expensive, lower grade wire. It is used to extend from the thermocouple probe to the control system or digital display. Extension grade wire is more economical due to the length requirements. Also, it is not in the process itself and does not play as critical a role nor does it experience the temperature extremes & temperature cycling.
GENERAL SPECIFICATION
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CONDUCTOR |
SOLID , MULTISTRAND |
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INSULATION |
PTFE , FIBRE GLASS , SILICON , PVC , PFA , POLYMIDE * FOR OTHER TYPE PLEASE SPECIFY US. |
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CONSTRUCTION |
PTFE / PTFE PTFE / PTFE/SS BRAIDING PTFE/POLYMIDE/CU SCREEN/PTFE PP/FG/FG/SS & VARIOUS OTHER TYPES OF CONSTRUCTION. |
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OPERATING TEMPERATURE |
PTFE INSULATION : -60°C TO 260°C SILICON INSULATION : -50°C TO 200°C FIBRE GLASS INSULATION : -73°C TO 600°C CERAMIC FIBRE : -72°C TO 800°C ALUMINA FIBRE : -73°C TO 1200°C POLYMIDE : -267°C TO 310°C |
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LIMITS OF ERROR |
According to ASTM E230 / 77 |
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COLOUR CODE |
According to ANSI MC 96.1 |
Thermocouple Wire
Tags: Thermocouple Wire