What is a psychrometer?

Psychrometer is a device that can be used to measure moisture. It is a type of hygrometer, a family of devices that are designed to measure relative humidity. Psychrometers are among the simplest hygrometers and can be made at home with several hardware stores. They can also be purchased through scientific supply catalogs as well as shops that supplies to measure climate conditions, such as temperature and barometric pressure. The device consists of two thermometers. One of them is the thermometer of the dry bulb, which is exposed to the ambient air for temperature measurement. The second is the thermometer of the wet bulb, with a bulb submerged in wet material. The dry it is, the faster it evaporates and the more radical the cooling effect. People can compare both temperatures and determine the humidity based on the difference. When two thermometers have the same reading, the relative humidity is 100%. Rarely the wet bulb thermometer will be warmer because it is so cold that the water forms ice and the LED insulates the bulb.

Psychrometer graph is often printed on the back of the device or is equipped with a packaging so that people can quickly search after reading after relative humidity. Graphs are also available online and in manuals that come with some types of scientific instruments. People who make a psychrometer at home can take advantage of published charts to read their devices. A simple home psychrometer can be made with a pair of thermometers, with a muslin wrap for one of the bulbs to knock water up to the bulbing evaporation.

in a variant known as Sling Psychrometer, the device is designed to turn the air to speed up the evaporation process. Other devices known as ventilated or aspired psychrometers are designed to cooperate with ventilators of the thermometer ventilation wet bulb. It also accelerates evaporation and is designed to allow the water more evenly evaporate so that the reading is more accurate. It is necessary to take care ofto prevent the thermometer or its location to prevent reading.