The main characteristics of thermistor resistance.Wide-Angle Fresnel Lens manufacturer

　　Thermal resistance is a sensor resistor that changes with temperature changes. According to different temperature coefficients, it is divided into a positive temperature coefficient thermistor (PTC THERMISTOR, that is, POSITIVE TEMPARATURATURATURATURATURANTOREFICients) and negative temperature coefficient thermistor (NTC THERMISTOR). The resistance value of the positive temperature coefficient thermistor increases with the increase of temperature, and the resistance value of the negative temperature coefficient thermistor resistance decreases with the increase of temperature. They belong to semiconductor devices.

　　① The sensitivity is high, and its resistance temperature coefficient is more than 10 to 100 times larger than the metal, which can detect temperature changes at 10-6 ° C;

　　② The working temperature range is wide, the normal temperature devices are applicable to -55 ℃ ～ 315 ℃, the applicable temperature of the high temperature device is higher than 315 ° C (the current highest can reach 2000 ° C), and the low temperature device is suitable for -273 ° C ~ -55 ° C;

　　③ The volume is small and can measure the temperature of the gaps, cavity and biological blood vessels that other thermometers cannot measure;

　　④ Easy to use, the resistance value can be selected at any of 0.1 ～ 100kΩ;

　　⑤ Easy to process into a complex shape, which can be produced in large quantities;

　　⑥ Good stability and strong overload capacity.

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