Working Principle and Applications of Thermal Resistors

Thermal resistors are sensors used for measuring high temperatures. Their working principle is based on heat conduction and the change in resistance values. There are many types of materials, among which platinum, copper, nickel, iron, tungsten, etc. are common, and platinum is the most frequently used one. This article will introduce the working principle and applications of thermal resistors.

The working principle of thermal resistors is based on heat conduction and the change in resistance values. A thermal resistor sensor consists of two electrodes, with one connected to a high temperature and the other to a low temperature. When there is a temperature difference between the high and low temperatures, the resistance value of the sensor will change.

In the field of high temperatures, thermal resistors are usually used to measure the temperatures of high-temperature steam, gases, liquids, etc. The working principle of thermal resistors is to utilize the characteristic that the resistance value of a metal conductor changes with the change in temperature. When the surface of a thermal resistor is heated, its resistance value will change. According to the working principle of thermal resistors, the temperature of a high-temperature object can be measured by measuring the resistance value of the thermal resistor.

Several Applications of Thermal Resistors:

Industrial Control and Monitoring: Thermal resistors are widely used in industrial control and monitoring. For example, under high-temperature and high-pressure conditions, they can be used to monitor the temperature and pressure of fluids.

Thermocouples: Thermocouples are high-temperature sensors and are usually used to measure the temperature of high-temperature objects. A thermocouple consists of two electrodes made of different materials. When the heat of a high-temperature object is transferred to one electrode, the resistance value of the electrode will change, and thus the temperature of the object can be measured by measuring the resistance value of the thermocouple.

Food Industry: Thermal resistors are widely used in the food industry. For example, when measuring high-temperature steam and gases, they can be used to detect the temperature during the food processing.

Power Industry: Thermal resistors are widely used in the power industry. For example, when measuring high-temperature and high-pressure fluids, they can be used to monitor the temperature and pressure of the fluids.

In industry, thermal resistors can be applied in many fields, such as automated production, chemical industry, mining, railways, medicine, food processing, etc. In high-tech fields like aerospace, nuclear engineering, and thermal power plants, the application of thermal resistors is also indispensable. The ICGOO website will continue to update articles constantly to provide the latest technical information and product information for a wide range of users, helping them understand and choose the components that best meet their own needs.