Tired of experiencing high or low levels of humidity in your room? Here is a guide on different methods that will help you measure the humidity level in your room.
Humidity is defined as the concentration of water vapor present in the air. Water vapor is the gaseous state of water which usually in the air and is not visible to the human eye. There are three methods of measuring humidity where we have absolute humidity-which describes the water content in the air, relative humidity -which indicate a present state of absolute humidity relative to a maximum humidity and lastly, specific humidity – which is the ratio of water vapor mas to total moist air parcel mass.
Methods to Measure Humidity in a Room
- Use of a hygrometer
- Use of ice cubes
- Performing the wet and dry bulb temperature test
- Use of hair as a hygrometer
- The dew point temperature
- Concentration of vapor
One of the best methods and the most used method is using an essential instrument called a hygrometer, which is mostly used in meteorological science. The instrument has numerous commercial use, but its main purpose is measuring the amount of water vapor in the air, which is also known as humidity.
The instrument provides the amount of moisture that space is confined to have and compares it to the maximum amount of moisture in a room. A hygrometer depends on other quantities like measuring temperature, mass, or pressure because they absorb moisture in your room.
The device has a screen where the humidity is recorded and computed before you can get the humidity levels in your room. A hygrometer should be calibrated at least once a year to ensure it gives you the most accurate results.
In this method, a glass of water and ice cubes is used to determine the humidity level in your room. This method shows if your room’s air is humid or how dry it is.
The technique takes place where you can place the glass and plunk the ice cubes in a room that you might be suspecting the moisture being too high or too low. After immersing the ice cubes in the glass of water, you should leave it for around 10 minutes.
After the ten minutes’ inspection should be done on the outside of the glass to see whether condensation (which is the change of water from its gaseous form into liquid water) has occurred.
If it has formed outside the glass, then that means there is a high moisture level in your room. To control the high level of moisture in your room, one should add plants that highly absorb moisture in the atmosphere in your space. If the outer part of the glass happens that there is no condensation, you should consider adding a humidifier in your room because dry air can lead to health issues.
It’s an easy way to measure humidity using two thermometers where one thermometer is used as the wet bulb while the other one is used as a dry bulb. The thermometers should be well shaken before starting the experiment to ensure that the mercury in each thermometer settles in the bulb.
The bulb should be moistened using a dampened piece of cotton. For the experiment, the water temperature in a given room should be used. The thermometers, both the wet and the dry bulb, should be placed and duct-taped on the cardboard to be projected outwards.
In this method, a fan is needed if you want to check the moisture level, and it is placed pointing the thermometers, and after the given five minutes, you should check and record the temperatures in every thermometer.
The temperatures in the thermometer, the readings from the wet bulb should be subtracted from the temperatures of the dry bulb. The results are usually in degrees Celsius which is also called the depression value that shows the percentage of humidity in the room.
In this method, hair is used to measure humidity in a room. Hair strands usually get longer when the humidity is high and usually contract when humidity is low.
The length of the strand is usually dependable, and it can be used as a hygrometer. If you want to test the efficiency of this method, you use two hair strands, and on one, use a blow dry where the hair shrinks, which shows that there is 0% moisture. The other strand should be sprayed with water, and it will expand, which indicates 100% of humidity.
Dew point is the temperature at air is cooled to become saturated with water vapor, and when it’s cooled further, it condenses and usually forms liquid water. When the dew point is measured, it is usually able to provide the following reasons:
- The reading usually shows the temperature that should be maintained in gas to avoid condensation.
- After the reading, it shows the amount of humidity in your room or space and can tell the present amount of vapor.
- The dew point is usually expressed in the form of temperature readings, and if it goes below the freezing point, the frost point (which is the temperature below 32 degrees Celsius) applies.
It is the mass of water vapor and is presented per unit volume of your space. In this method, a space of one-meter cubic contains ten grams of vapor. If the vapor is more or less than ten grams, then you can tell that your humidity.
The points above show the use of a hygrometer and other methods that one can use to determine the humidity of your room. It also has an explanation of how each one of them is used.