What are humidity sensors used for?

What are humidity sensors used for?

Humidity sensors are used to measure and monitor the amount of water present in the surrounding air.

What is the principle of humidity?

Humidity is defined as the amount of water present in the surrounding air. This water content in the air is a key factor in the wellness of mankind. For example, we will feel comfortable even if the temperature is 00C with less humidity i.e. the air is dry.

What is humidity sensor in IOT?

Humidity sensors are electronic devices that measure and report the moisture and air temperature of the surrounding environment where they are deployed e.g., in air, soil, or confined spaces. Humidity measurements indicate the concentration of water vapor presented in the air.

Where are humidity sensors used?

Humidity sensors are commonly used in the meteorology, medical, automobile, HVAC and manufacturing industries. Humidity sensors can be divided into two groups, as each category uses a different method to calculate humidity: relative humidity (RH) sensors and absolute humidity (AH) sensors.

What is the unit of humidity?

The specific humidity unit is the most reliable unit of measurement of humidity. This measures the weight of water vapor per unit weight of air and it is expressed as grams of water vapor per kilogram of air g.kg-1 is the specific humidity unit.

How many types of humidity are there?

Three primary measurements of humidity are widely employed: absolute, relative, and specific. Absolute humidity is expressed as either mass of water vapor per volume of moist air (in grams per cubic metre) or as mass of water vapor per mass of dry air (usually in grams per kilogram).

What is temperature & humidity sensor?

Temperature and humidity sensors are among the most commonly used environmental sensors. Humidity sensors are also sometimes referred to as hygrometers. These devices are used to provide the actual humidity condition within the air at any given point or in any given place.

How is humidity sensor made?

Capacitive humidity sensors as implied by their name make use of a capacitor, which consists of two electrode layers between which is a dielectric material. As the dielectric material absorbs water vapor from the surrounding air, the dielectric constant increases, which increases the capacitance of the sensor.