One of the properties of great use to scientists and engineers is temperature, and measuring temperature is important for a variety of processes such as smelting steel, monitoring jet engine performance, measuring how close an experiment gets to absolute zero, or determining the effects of global warming. There are several reliable sensor categories that can be used to accurately measure temperature, and choosing one depends on the operating environment, range of expected temperature, and accuracy required by the application.
Thermometer Temperature Sensors
Historically, temperature has been measured by correlating the thermal expansion of a material to a change in temperature. The mercury thermometer immediately springs to mind as a classic example of this type of sensor, but prior to the development of the mercury thermometer in the early 1700s, other materials such as alcohol and air/water interfaces were used to create temperature measurement devices.
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