As we all know, there are many kinds of sensors, their respective functions are not the same, then how to choose the sensor. In fact, a good sensor is related to temperature, use, and accuracy.
We choose sensors from temperature, use, and accuracy. Thermocouples may be the only choice at high temperatures. The most accurate is usually a platinum resistance thermometer, but an accurate thermistor is more accurate near room temperature. Because thermistor has high sensitivity, it is most suitable for narrow range applications such as medical thermometers. Thermistors and ICs are well suited for moderate accuracy measurements and temperature compensation applications. IC and resistance thermometers are available in smaller packages.
For small size and fast application, the diameter of the glass ball thermistor is from 0.014 inch to 0.005 inch, while the diameter of the insulated thermocouple wire can be as low as 0.005 inch. In the larger size, the thermistor With a diameter of up to 1 inch, the thickness of the thermocouple wire can be up to 14 AWG or thicker. Its insulation includes PVC to ceramic, fiber or ceramic beads.
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