How to calculate the relative humidity of the dry wet bulb

Dry wet bulb is in the family, hospital, hotel, there are many places application of scientific research departments. Mainly used for calculation of the relative humidity. Its structure is to use two thermometer, among them a thermometer at the bottom of the wrapped in gauze, gauze another end in the sink, namely by capillary action make keeps in wet gauze, this is a wet bulb. The other was not wrapped with gauze and exposed in air thermometer call it dry bulb thermometer. Description: specifications: WD - 5 types: external standard type glass thermometer structure: external standard type material: plastic shell temperature range: - 17/50C& F: precision & plusmn; 1 c / 2 f packing: 1 PCS/white box product features: the temperature and humidity meter display temperature, intuitive and convenient; Safe and reliable, long life, fast reading. How to use relative humidity dry wet bulb? When use, place the thermometer is apart from the ground 1 first. 2 - 1. 5 meters high. Read at the time indicated by the dry bulb and wet bulb temperature, refer to the attached thermometer table found to relative humidity. For example: dry bulb thermometer shows 22 ℃, the wet bulb temperature is 16 ℃, look up table to find dry bulb temperature of 22 ℃ and dry wet bulb temperature difference between 6 ℃ intersection point of the value of 54, the relative humidity of 54%. It is worth noting that the dry wet bulb attached table applies only to the stability of the wind speed, cannot be applied in any occasion.