When the temperatures being measured are very high, it is impossible to have physical contact with the medium to be measured. Temperature sensors that work on radiation methods and hence require no physical contact with the radiating system are called Radiation Pyrometers. Construction of Radiation Pyrometer The radiation pyrometer have three basic components The optical …
A thermocouple is an active transducer that measures temperature. It works on the principle of see back effect. They are extensively used for temperature measurement in industrial applications. Thermocouple Construction and Types A thermocouple consists of two different types of metals joined together at one end (hot junction) and terminated at another end (cold junction). …
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The Thermistor or simply Thermally Sensitive Resistor is a temperature sensor that works on the principle of varying resistance with temperature. They are made of semiconducting materials. The circuit symbol of the thermistor is shown in the figure. Construction of Thermistor A thermistor is made of oxides of metals such as Nickel, Manganese, Cobalt, Copper, …
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We know that the resistance of metallic conductors increases with temperature. Thermal sensors using this property of metallic conductors are called Resistance Temperature Detector(RTD). Construction of RTD The resistance temperature detector is constructed by wounding the resistance wire on a mica base. The wire is wound like a helical coil on the support to reduce …
Temperature sensors are devices used to measure temperature that is generated by a system. It allows us to detect any physical change to that temperature by producing some output. Classification of Temperature Sensors Different types of Temperature sensors are available depending upon their applications. Two basic physical types of Temperature Sensors are Contact Temperature Sensors. …
