Temperature Sensor 

(Temperature transducer), which uses the law of the change of various physical properties of a substance with temperature to convert the temperature into a usable output signal. Temperature sensor is the core part of temperature measuring instrument, and there are many varieties. According to the measurement method, it can be divided into two types: contact type and non-contact type. According to the characteristics of sensor materials and electronic components, it can be divided into two types: thermal resistance and thermocouple. Modern temperature sensors are very small in appearance, which makes it more widely used in various fields of production practice, and also provides countless conveniences and functions for our lives.
There are four main types of temperature sensors: thermocouples, thermistors, resistance temperature detectors (RTD), and IC temperature sensors. IC temperature sensor also includes two types of analog output and digital output