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Tips to measure Humidity Accurately


What is the first thing, when you hear Humidity?

Stickyness and Irritation! This summer season doesn't come alone, it brings humidity with it. It refers to the amount of moisture in the air. Humidity can affect your health, and it also determines which plants and animals can live in a particular environment. The amount of humidity also influences whether it will rain, snow, or be foggy. It is very difficult to measure and calculate humidity yourself without advanced equipment.

So, here are some tips, you must read to know how to measure humidity:

Absorption, evaporation and condensation are the three basic principles used for practical humidity measurement.


Wet-and-dry bulb psychrometer:The instrument depends on the use of two identical thermometers, one of which has a moistened wick surrounding its bulb. The temperature recorded by the “wet bulb” thermometer is depressed, owing to the energy required to evaporate water from the wick. The degree of cooling is related to the water vapor pressure in the atmosphere and the enthalpy of evaporation.


Check Dew Point: Dew point can be measured using a chilled mirror as further cooling at saturation temperature will result in the condensation of water. An optoelectronic mechanism is used to detect condensation on the mirror surface and dew point temperature is closely measured by looking at the dynamic equilibrium between evaporation and condensation on the mirror. Dew Point is the temperature at which air is saturated with water and condensation begins. The higher the dew point rises, the greater the amount of moisture in the air.




Sensors: More modern instruments use electronic means of recording the information, the 2 most common electronic sensors are capacitive sensors which sense water by applying an AC signal between 2 plates and measuring the change in capitance due to the amount of water present. Resistive sensors use a polymer membrane that changes conductivity according to absorbed water.


Apps: Some systems include wireless sensors that connect to your Apple iOS or Android device. If you want to track historical patterns, this is the best option. Apps may offer big-screen summaries noting "Dry," "Comfort" and "Wet."


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