What does a psychrometer measure?


Quick Answer

A psychrometer is an instrument that measures the amount of humidity in an atmosphere. The instrument uses two thermometers which, when compared, determine relative humidity.

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Full Answer

One of the thermometers is dry when it is exposed to the air, while the other thermometer has a wet cloth around its bulb before being exposed to the air. By comparing the two different temperatures, users can determine the relative humidity of the surrounding atmosphere. A psychrometer is sometimes referred to as a wet-and-dry-bulb thermometer. It is a simple type of hygrometer, which is a device that measures the moisture content of the air.

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