Relative Humidity Calculator Wet Bulb Dry Bulb

Enter your actual station pressure not the altimeter setting.

Relative humidity calculator wet bulb dry bulb.

When the psychrometer is swung around by its attached chain or handle the air causes the water on the wick to evaporate which. Wet bulb temperature t wb can be measured with a standard thermometer with some wet clothing cotton or similar around the bulb. This script will determine the relative humidity from the entered dry and wet bulb temperatures data. Wet bulb temp c.

Air humidity can be estimated by measuring. Note that continuously air flow around the thermometer is important to evaporate. Relative humidity is measured using a device called a sling psychrometer this consists of 2 side by side conventional thermometers one of which the wet bulb thermometer has a wetted wick placed at the bottom the other the dry bulb thermometer has no wetted wick. If the air is fully saturated 100 relative humidity the water cannot evaporate so both the wet and dry bulb temperatures are the same.

The wet bulb temperature wbt is the temperature read by a thermometer covered in water soaked cloth wet bulb thermometer over which air is passed. By definition wet bulb temperature is the lowest temperature a portion of air can acquire by evaporative cooling only. Relative humidity dewpoint temp c results. It includes a dry bulb thermometer a wet bulb thermometer and a psychrometric chart a graph that plots the relationships between the dry and wet bulb temperature relative humidity and dew point at constant pressure.

Enter the two different temperatures. Enter your actual station pressure not the altimeter setting. In of mercury mm of mercury millibars hpa. A simple online weather calculator to find the dewpoint and the wet bulb temperature by knowing the values of relative humidity temperature and actual station pressure.

If the dry and wet bulb temperatures are set to the same value the calculator will show the saturation mixing ratio the amount of water in saturated air at that temperature. Enter dry bulb temperature plus either wet bulb temp rh or dewpoint temp. Dry bulb temp c. Enter a temperature relative humidity and actual station pressure.

At 100 relative humidity the wet bulb temperature is equal to the air temperature dry bulb temperature. There is a converter below this calculator if you only know the celsius temperature for the entries required. Calculate dewpoint wet bulb temperature from relative humidity. In of mercury mm of mercury millibars hpa.

Enter a temperature wet bulb and actual station pressure. The entry required is in fahrenheit degrees. Dry bulb temperature and.