Electrolytic Dial Indicating Hygrometer

An Electrolytic Dial Indicating Hygrometer is a type of instrument used to measure and indicate humidity levels in the air. It falls under the supply class of Pressure, Temperature, and Humidity Measuring and Controlling Instruments, which is part of the supply group of Instruments and Laboratory Equipment.

This type of hygrometer works based on the principle of electrolysis. It consists of a sensing element that contains a hygroscopic material, such as lithium chloride or lithium bromide, which absorbs moisture from the air. As the moisture is absorbed, it causes a change in the electrical conductivity of the hygroscopic material.

The hygrometer has a dial or display that indicates the humidity level based on the electrical conductivity of the sensing element. The dial typically shows the humidity level as a percentage or in a range of values.

Electrolytic Dial Indicating Hygrometers are commonly used in various applications where monitoring and controlling humidity levels are important, such as in laboratories, manufacturing facilities, storage areas, and HVAC systems. They provide a simple and reliable method for measuring and maintaining optimal humidity conditions.