You will need
- - the psychrometer;
- - hygrometer;
- - gauze;
- - psychometric table;
- - candle;
- - matches;
- - birch or pine sliver.
Perhaps the simplest and most reliable method of determining the moisture content of the air is to use special measuring devices psychrometer or hygrometer. According to the principle of hygrometers are divided into several types - film, hair, weight and others. The device can be used both in residential and warehouse premises, as well as in greenhouses, cattle and poultry farms.
Psychrometer allows you to measure how the humidity and temperature of the air in the room. The device simple room device includes 2 alcohol thermometer and a table for reading. To purchase any of the devices can be in specialized stores.
If for whatever reason you can't use devices, but you have a psychometric table to determine the humidity of air room you can use a mercury thermometer. Measure the temperature of the air in the room and record the readings. Take cheesecloth and soak it in water. Tightly wrap the thermometer head and leave for 10 minutes. Clear indications. Subtract the first number from the second. The difference between the readings of the thermometer will determine the relative humidity of the air at a special table.
To determine the moisture, you can also use ordinary people's ways. For example, the fact that the air in the room is too dry, you can understand just watching the plants. If the tips of the leaves of your "green Pets" first become brown and then dry up or do the leaves curl and shrink, it clearly demonstrates the lack of moisture in the air. Other symptoms include abscission of buds and defeat of plant pests such as thrips, spider mites and whiteflies.
Take a pine or a birch twig. Put it on the floor and leave it for a week. Try to break the sliver. If this will make a dry crackling sound, then the room is too dry. If the sliver breaks without any sounds, the humidity of the air in the room is normal. If puppies only bends and does not break, the humidity increased. It should be noted that such a measurement method is more suitable for non-residential premises.
Light a match or candle and watch the flame. If the flame burns vertically, the humidity increased. When humidity is low, as a rule, the flame falls back in different directions, and around him formed a crimson halo.