dehumidifier
There is no such thing as a sygrometer, but a hygrometer is a device that is used to measure the humidity of the air. It can indicate relative humidity or absolute humidity.
hygrometer used to measure density of relative humidity in air by using a sensory element such as a hair
Fahrenheit or Celsius or Kelvin. Ex: 65ºF, 32ºC, 100ºK
B. Temperature C. Air pressure D. Relative humidity
A hygrometer measure humidity. One sort of hygrometer is psychrometer, it has two thermometers one kept wet the other dry. The difference between the temperatures is related to the humidity.
%
There is no such thing as a sygrometer, but a hygrometer is a device that is used to measure the humidity of the air. It can indicate relative humidity or absolute humidity.
hygrometer used to measure density of relative humidity in air by using a sensory element such as a hair
A psychrometer is a type of hygrometer used to measure the relative humidity in the air. It consists of two thermometers, one of which is covered with a wet cloth, allowing for the comparison of wet-bulb and dry-bulb temperatures to calculate relative humidity.
Your question is a little unclear. The devices used to record temperature and relative humidity are "thermometers (temperature)." and "hygrometers (relative humidity)". Sorry if this isn't what you were looking for.
barometer A barometer measures atmospheric pressure, not humidity. A hygrometer measures humidity.
humidifyer
g/m³ or mg/l
Relative humidity expresses a percentage of humidity in the air to the maximum amount of humidity that could be in the air. For example: when the temperature rises the air will be able to hold much more humidity so the relative humidity will drop.
Rock salt can be used to control humidity levels in a room by absorbing excess moisture from the air. Placing bowls of rock salt in the room can help reduce humidity and create a more comfortable environment.
In some heavy industries they are used. It depends on what the product is.
Humidifiers are a small machine that increases humidity/moisture in any room you put them in. In winter months, it's used in homes and can help lower energy bills because people stay warmer with more humidity.