89750181

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Introduction to NTC Thermistors

NTC Thermistors are temperature sensors that measure temperature using resistance. These types of sensors use semiconductor materials, which have the ability to resist electrical current through thermal energy. They can be used to measure temperatures ranging from -40 to 150°C. An NTC Thermistor has two terminals, one for the power and the other an input terminal. The resistance between these two terminals varies with the changing temperature. The resistance of the thermistor increases as the temperature increases and decreases as the temperature decreases. The sensitivity of the thermistor also increases at lower temperatures.

Types of NTC Thermistors

There are two main types of NTC Thermistors available: immersion NTC Thermistors and Surface Mount NTC Thermistors. Immersion NTC Thermistors are designed for use in liquid mediums such as water, coolant or air. They can measure temperatures of -40 to 150°C, with a range of accuracy of ±0.5°C. Surface Mount NTC Thermistors are designed for use in solid mediums such as walls, countertops or machine parts. They can measure temperatures of -40 to 60°C, with a range of accuracy of ±1.0°C.

89750181 Application Field and Working Principle

The 89750181 is designed to measure temperature and humidity in agriculture fields. The thermistor is a negative temperature coefficient (NTC) type, meaning that it has increasing impedance as the temperature rises. The resistance of the thermistor both increases and decreases with temperature changes. This device is capable of measuring humidity and temperature accurately and provides readings with a resolution of 0.2°C up to a temperature of 50°C and an accuracy of ±1.5°C.

To convert the resistance of the thermistor into temperature, the application field uses the Steinhart-Hart equation. This equation is a three-point polynomial equation that predicts the resistance-temperature relationship of many thermistors. The function can be used for temperature readings up to 150°C. The equation of the thermistors can then be used to calculate temperature using resistance.

Conclusion

The 89750181 is an NTC Thermistor applied to temperature sensing and humidity measurements. It has various features, such as a high accuracy of ±1.5°C and a resolution of 0.2°C. Its resistance is temperature dependent and is measured using the Steinhart-Hart equation. Overall, this thermistor is an effective temperature sensor for a wide range of applications.

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