What are the various types of filled type thermometer?
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Two type one is filled with mercury and other one it contains a small temperature sensitive metal plate
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Explanation:The operation of a filled-system thermometer is based on one of three principles: the thermal expansion of a liquid, the temperature dependence of the pressure of a gas, or the temperature dependence of the saturated vapor pressure of a liquid. A distinction is made between gas-filled, liquid-filled, and vapor-filled, or vapor-pressure, thermometers. (The substances that are used as fills in the three types are nitrogen, mercury, and ethyl chloride, respectively.)
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