Thermocouples, also known as thermocouples, are widely used temperature sensors that convert thermal potential differences into electrical potential differences and are suitable for "electric thermometers". Its low price, easy replacement, no need for external power supply, standard interface and wide temperature range make it popular. However, its accuracy is limited to systematic errors typically greater than 0.1 degrees Celsius. The voltage in the thermoelectric effect varies between 1 and 70 microvolts per degree Celsius, depending on the type of metal. Consider cost, suitability, convenience, melting point, chemistry, stability, and output when selecting a thermocouple. Many applications utilize thermocouple stacks because they produce very small voltage
Thermocouple thermometers work based on the Seebeck effect, which occurs when two different conductive materials come into contact. It measures the weak voltage produced by a thermocouple to calculate the temperature at the junction of two materials. Advantages and Disadvantages of Thermocouples: Thermocouples have the advantages of fast response time, wide measurement range, and are relatively cheap. Thermocouples can be made very small and customized to mount directly on the surface of a component for more accurate measurements. However, thermocouples also have their limitations; if the object being measured is charged or the device leaks, its accuracy will be affected, and in severe cases, the thermocouple thermometer may even be damaged. The values measured using noise meters can be used as a basis for reporting noise pollution, but this requires following certain standards and procedures. Usually, you need to measure and record the data multiple times to ensure the accuracy of the measurement results. In addition, it is best to have the measurement performed by a qualified professional.
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