Thermocouple temperature sensor principle and application is introduced

Principle of thermocouple temperature sensor

temperature thermocouple sensors use material law of various physical properties with temperature changes the temperature into usable output signal. Thermocouple temperature sensor is the core part of the temperature measuring instrument, wide variety. According to measuring methods could be divided into two types: contact and non-contact, according to the thermocouple sensor material and electronic component features divided into two categories, thermal resistance and thermocouple. Modern thermocouple temperature sensor shape is very small, so more to make it widely used in the areas of production practice, also provide countless convenience to our lives and functions.

temperature thermocouple sensors use

temperature is representing the degree of cold and hot objects physical quantities, is an important industrial and agricultural production process and common measuring parameters. Temperature measurement and control to ensure product quality, improve production efficiency, energy saving, production safety, and promote the development of the national economy plays a very important role. Due to the universality of temperature measurement, temperature thermocouple sensors in all kinds of thermocouple sensors in the first place, the number of about 50%.

a thermocouple temperature sensor is through object with the temperature change and change some features to indirect measurement. A lot of material, features of components along with the change of temperature changes, so can the thermocouple temperature sensor material quite a lot. Thermocouple temperature sensor with temperature change caused by the physical parameters are: expansion, resistance, capacitance, and electromotive force, magnetic energy, frequency, the optical properties and thermal noise and so on. With the development of production, the new type thermocouple temperature sensor will emerge.

temperature thermocouple sensors and contact way of the measured medium is divided into two broad categories: contact and non-contact. Contact temperature thermocouple sensors need to maintain thermal contact with the measured medium, make sufficient both heat transfer and reach the same temperature. This type of thermocouple sensor mainly include resistive, thermocouple, p-n junction thermocouple temperature sensor, etc. Non-contact temperature thermocouple sensors without contact with the measured medium, but by the measured medium thermal radiation or convection to the thermocouple temperature sensor, in order to achieve the purpose of temperature measurement. This kind of thermocouple sensors are mainly infrared measuring temperature thermocouple sensor. The main characteristics of the temperature measuring method can measure the temperature of the motion state of material.

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