so you will need to check how usable a hygrometer is before making your purchase. These are the most used, and these electrical devices measure humidity changes in electrical resistance across a ...

A capacitor type of hygrometer is usually used to measure relative humidity. The sensor has a dielectric polymer layer that absorbs water molecules from the air through a thin metal electrode.

Hygrometers use different methods to measure humidity ... ‘For example, an analog hygrometer could have a human hair that expands and adapts to changes in humidity. Digital hygrometers use ...