how does platinum resistance thermometric work in thermometric substance
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A platinum resistance thermometer (PRT) is a piece of platinum wire which determines the temperature by measuring its electrical resistance. ... The resistance of a wire of the material is measured by passing a current through it and measuring the voltage across it with a suitable voltmeter.
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Platinum Resistance Thermometer. Platinum is suitable as a thermometric substance because of its high temperature coefficient of resistance, constancy of resistance at particular temperature and reproductivity. Platinum resistance thermometer was first constructed by Sir William Siemens in 1871.
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