Aspirated Psychrometer

Equipment used for moisture testing includes various types of hygrometers, each designed for specific applications. One widely used instrument is the aspirated psychrometer, which provides accurate and reliable measurements of humidity.

Function and Features

An aspirated psychrometer consists of two thermometers: a wet-bulb thermometer and a dry-bulb thermometer. The wet-bulb thermometer’s bulb is covered with a wick saturated with water, while the dry-bulb thermometer remains dry. As air is passed over the thermometers using a fan or aspirator, evaporation occurs from the wet-bulb, cooling it. The difference between the wet- and dry-bulb temperatures is known as the wet-bulb depression and is directly related to the moisture content of the air.

Benefits

  • High accuracy and reliability
  • Can be used in a wide range of applications
  • Easy to operate and maintain

Applications

Aspirated psychrometers are commonly used in various industries and applications, including:

  • Meteorology: Measuring atmospheric humidity
  • HVAC: Monitoring indoor air quality and humidity levels
  • Industrial: Humidity control in manufacturing, storage, and processing
  • Agriculture: Monitoring soil and crop moisture