What are air temperature sensors?

Air temperature sensors contain a number of devices that are often designed to measure the surrounding or surrounding atmospheric temperatures. They can also be used in conventional industrial settings, for example in car injected engines in car density calculation so that the on -board computer can adjust the fuel flow and reduce it as air density decreases to prevent energy loss. The most common types of temperature sensors include overall thermocoups, resistance temperature equipment (RTD), infrared sensors, thermometers and silicon diodes. They are often used as thermostats, which are sensitive switches, but can also be used as air temperature sensors due to their ability to measure in a wide temperature range, from 32 ° Fahrenheit (0 ° C) to 2 102 ° Fahrenheit) or m) or m) or m) or m) or m) or m) or m) or m). Air temperature sensors in thermocouple are used in high temperature environments such as furnaces, but they are not very good to measure minor changes of the fractions of a degree.

Resistance temperature equipment and thermistors measure or reduce the electrical resistance of matter with temperature rise. RTDs are more accurate across small temperature changes than thermocoups, but they cannot measure temperatures as high or low as the thermocouples can. They also tend to be longer -term and more stable than thermocoups, although their values ​​may be wrong due to design and environment conditions. Because they are not affected by the surrounding electric noise, RTD is often used as air temperature sensors in an industrial environment where powerful motors or high voltage current are present.

Infrared temperature sensors are indirect measuring devices that do not require any physicles contact with the measured material because it measures thermal radiation, which produces often referred to as radiation of the black body. Are therefore useful in extrem environments where other sensors would fail, for example in furnaces, where temperatures can exceed 5,000 ° Fahrenheit (2,760 ° C) and industrial processes where heating and cooling are rapidly. Senteglass diode sensors operate at the opposite extreme than infrared sensors and are useful in measuring extreme cold. Although applications such as air temperature sensors have high school experiments, they are more often used to measure cryogenic gases in liquid form such as liquid nitrogen, oxygen, hydrogen and helium.

thermometers, thermistors and RTDs are the most commonly used types of air temperature sensors and are often used to measure liquid and solid temperatures. Typical thermometers work by measurement of expansion and contraction of one liquids or organic red liquid in a sealed tube as the temperature of the outer air changes. The air temperature sensors in the automotive industry are usually thermistors. Whether the gases measure the exhaust gas, the air flow in the air area orThe engine coolant, all working on the same principle that as the temperature of the ambient heated the ambient heated, the sensor resistance is reduced and the voltage signal is reduced to the computer's controls.