NTC thermistor temperature sensor
1、 Characteristics
The main characteristic of NTC thermistor temperature sensors is that their resistance value changes with temperature. This change is nonlinear, but within a certain temperature range, the relationship between its resistance value and temperature can be approximated as a quadratic function. This enables NTC thermistor temperature sensors to provide very accurate temperature readings.
In addition, the NTC thermistor temperature sensor also has the characteristic of fast response. Due to the unique internal structure, when the temperature changes, the resistance value can be adjusted in a short period of time to achieve real-time temperature monitoring.
2、 Purpose
The application fields of NTC thermistor temperature sensors are very extensive. In household appliances, such as air conditioners, refrigerators, water heaters, etc., it is necessary to use NTC thermistor temperature sensors to monitor and control the working temperature of the equipment, in order to ensure the normal operation and service life of the equipment.
In the industrial field, NTC thermistor temperature sensors are also widely used. For example, in a car engine management system, it is necessary to use an NTC thermistor temperature sensor to monitor the operating temperature of the engine to prevent overheating or overcooling. In chemical production, it is also necessary to use NTC thermistor temperature sensors to monitor and control the temperature during the production process.
3、 Parameters
The main parameters of NTC thermistor temperature sensors include resistance value, B value (i.e. the percentage change in resistance value for each degree of temperature increase), and operating temperature range.
The resistance value is the basic parameter of an NTC thermistor temperature sensor, which determines the sensitivity and accuracy of the sensor. The B-value is an important parameter that describes the resistance temperature characteristics of NTC thermistor temperature sensors, reflecting the sensitivity of the sensor to temperature changes. The working temperature range refers to the temperature range within which the sensor can operate normally.
