The use of dry wet bulb

Dry wet thermometer is made up of two thermometer, water bottle, cotton, including a thermometer with white gauze to cover the submerged, a not with gauze bag dew in the air. Use: first of all to do wet thermometer with distilled water in the bottle, water to soak into the gauze. If just add water, 30 minutes later, can be reading. Or reading the number is invalid. Then read the dry bulb and wet bulb temperature, temperature difference calculation. The final check to find the corresponding humidity temperature and humidity table. Dry wet bulb is usually used in high humidity of the warehouse requirements. It looks like the general glass rod thermometer is a little difference, there are two same glass rod thermometer. If you want to know the current temperature, can be directly reading; If want to know the humidity, needed a table to calculate. For example, assume that the thermometer shows the temperature of the dry bubble is 22 ℃, wet bubble is indicated by the thermometer is 16 ℃, the difference in temperature between two bubble is 6 ℃, the temperature can be shown in the table first line found 22 ℃, and the temperature of a line to find 6 ℃, then the line 22 ℃ 6 ℃ vertical and horizontal alignment, find the number 54. It is the meaning of relative humidity is 54% RH.