Thermocouple temperature sensor
is commonly used in * temperature measurement.
Thermocouple is composed of two different materials of metal wire, the welded together at the end.
To measure the heating part of the environment temperature, can accurately know the temperature of the hot spots.
Because it must have two different material of the conductor, so called the thermocouple.
Thermocouple its main advantage is wide temperature range and adapt to the atmospheric environment, and strong, low price, no need power supply, and cheap.
Thermocouples are connected by a at one end of the two different metal wires (
Metal and metal B)
, when the thermocouple end when heated, thermocouple circuit there is a potential difference.
Available to measure the electric potential difference to calculate temperature.
However, is a nonlinear relationship between voltage and temperature, the temperature due to voltage and temperature is nonlinear relationship, so need to reference temperature (
Make a second measurement, and use the test equipment (software or hardware processing voltage within an instrument -
Temperature transformation to * get thermocouple temperature (
To sum up, the temperature of the thermocouple is simple * and * general sensors, but the thermocouple is not suitable for the measurement and application of high precision.
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