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What are temperature measurement sensors and what are their types?
Temperature measurement sensors, which are used to measure the temperature of an environment or systems, have multiple technologies such as thermocouples, thermistors, RTDs, and magnetic thermometers. These sensors have different operating logic of the technologies they contain, for example; Thermocouples measure the change in voltage at the point of contact of two different metals, while RTDs measure the change in voltage at the point of contact of a wire or measures how film resistance changes with temperature. Magnetic thermometers estimate temperatures using changes in the magnetic field. These sensors, which have multiple types such as these technologies, are frequently used in industrial applications.Temperature Measurement Sensors Areas of Use
Other uses of the devices of these sensors, which are frequently used in industry and practice, are as follows; Automotive Industry: Some models of temperature sensors are used to measure the temperature of exhaust systems and vehicle engines. Industrial process control: In industries such as metallurgy, petrochemical, chemical, etc., these sensors are preferred to monitor and control the temperature of industrial processes. Aviation Industry: These sensors are used in aviation and other systems such as aircraft engines and brakes. Energy Generation: These sensors are used in equipment exposed to high temperatures, especially in power plants and other power generation facilities. HVAC (Heating, Ventilation and Air Conditioning) systems: HVAC systems are used to control the temperature of buildings. Temperature measurement sensors are used for the safety and efficiency of these systems. These sensors are widely used in many other areas to improve quality, safety and efficiency.Working Principle of Temperature Measurement Sensors
The working principle of the technologies of these sensors can be explained as follows; Thermoelectric sensors work using the Seebeck effect. We can say that this effect is a thermodynamic finding that occurs at the junction of two different metals at different temperatures. Thanks to the phenomenon that occurs at this junction, a voltage difference occurs. This voltage difference changes in direct proportion to the changes in temperature, and temperature measurements can be made with this change. Resistance measurement sensors can work together with these sensors to provide a measurement. The resistance measurement sensor uses a resistance element, usually made of platinum or nickel materials. As the temperature value increases, the value of the resistance increases in direct proportion. This change can be read by a measuring device and the temperature value can be calculated.
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