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The Working Principle Of Hygrometer

The principle of measuring the total relative humidity of the hygrometer: because of the temperature bubble of a wet-bulb thermometer wrapped in cotton yarn, the lower end of the cotton yarn is immersed in the water, the evaporation of the water so that the temperature of the thermometer is always lower than the temperature of the dry bubble thermometer (temperature) of this temperature difference with the water evaporation speed (that is, the relative humidity). According to the readings of the two thermometers, the relative humidity of the air can be detected from the table or curve.                                

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