Unknown Uses of Hygrometers

Unknown Uses of Hygrometers

Hygrometers are used to measure the moisture content of the air. It measures the relative humidity in the air. Relative humidity is the proportion of humidity in the air or vapour to the maximum amount of humidity that the air can possibly contain. It is evaluated on a scale of zero to 100, and the greater the value, the more moisture content in the air. A hygrometer can measure the humidity accurately. 

Common Uses of Hygrometers 

Several industries across the world need to find the right humidity to be able to function properly or to give us the perfect solutions for our problems. A little too dry or too moist air can make a huge difference in the lifespan of products or even the air quality within your homes and offices.

So, various industries use hygrometers to determine the humidity level and to take necessary steps to maintain optimal atmospheric pressure. There are various kinds of hygrometers – some show the relative humidity, some show absolute humidity, while some others simply let us know if it is too dry or damp. 

Hygrometers are commonly used for: 

  • Identifying the atmospheric moisture 
  • Detecting the presence of water vapour in gaseous mixture 
  • Various purposes by the manufacturing industry
  • Predicting the weather
  • Finding the right temperature and humidity to store food
  • Estimating the pressure in certain circumstances 

Some specific uses of Hygrometers are:


Meteorologists use hygrometers for daily weather report, especially during the warmer months when it is likely to reach levels of maximum 100 percent. Hydrometer offers a combination of its reading and that of a thermometer in the form of heat index. It is very useful in estimating how hot it can get during the summer. If the relative humidity gets above 40 percent, the heat index will be greater than the actual temperature. A heat index of 105 and above is considered dangerous to human health. 


A hygrometer measures the inside of the home for relative humidity. You can set a comfortable level and use the hygrometer as a monitor. If the humidity is high, a dehumidifier can be turned on to remove the extra moisture from the air. When the air gets too dry, you can turn it off. It is important to maintain optimum level of humidity inside homes because too much humidity in a home leads to mould and mildew growth and other health issues. A humidifier adds moisture back into the home in case of dry air with the hygrometer monitoring the amount of moisture to be added.


Hygrometers serve several commercial uses such as monitoring humidity in storage facilities for old books, food, furniture, musical instruments, and other items that can suffer damages due to moisture. Apart from that, establishments like saunas, whether commercial or residential, also use a hygrometer in tandem with a thermometer to monitor the air.


Museums contain valuable works of art, artefacts, documents, and other rare and antique items that are sensitive to temperature and humidity. It is essential to maintain the optimal air conditions to protect them from decay and destruction. The hygrometer plays a vital part in that protection. A hygrometer keeps a log of relative humidity levels and offer valuable information to aid preservation process. Hand-held units provide instant readings from all parts of the museum and help maintain the correct humidity.

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