HOW A THERMOCOUPLE WORKS
The use of these temperature sensors is assessed based on the use and the temperature range.
The thermocouple is an extremely simple and reliable sensor consisting of two metallic materials of various types connected by two junctions called the "cold junction" and the "hot junction." The temperature detected by these junctions generates a potential difference closely dependent on the nature of the materials. The installation of these sensors typically requires the use of special high-temperature cables.
CONSTRUCTION OF THE THERMOCOUPLE
Normally the thermocouples They are built to adapt to the working conditions. The key data for determining the appropriate thermometric element are: temperature range, thermocouple type, wire diameter, and length. The temperature range of the thermometric elements is determined by the calibration and tolerance table, while the wire diameter is determined by the maximum operating temperature and the response time considered.
If a large-diameter cable is used, the element's lifespan will be longer, but the response time will always be shorter. The length of the sensor element depends on both the type of use and the structure of the work process, as well as the type of protection of the thermometric element.
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