To find the relative humidity as a percentage from a dry and wet bulb thermometer, it is necessary to record these readings using two standard thermometers and a psychrometric chart. One thermometer measures the dry bulb temperature while the other measures the wet bulb temperature.Know More
To take the wet bulb temperature, place a wet cloth around the bulb and record the temperature reading, which will be lower than the dry air temperature. Similarly, record the dry bulb temperature reading of the air and use the chart to find the relative humidity. A psychrometric chart has the dry bulb temperatures at its base, and the wet bulb temperatures are found on a curved line at the left of the chart. The point where the two readings intersect on this chart is the relative humidity in percent.
An example to find the relative humidity on this chart is using a dry bulb reading of 80 degrees Fahrenheit and a wet bulb reading of 67 F. This will give a relative humidity result of 50 percent.Learn more about Weather & Tides
Humidity sensors work by detecting changes that alter electrical currents or temperature in the air, according to Sensors Online. There are three basic types of humidity sensors: capacitive, resistive and thermal. All three types of sensors monitor minute changes in the atmosphere in order to calculate the humidity in the air.Full Answer >
High humidity is generally regarded as the dew point temperature being at or only a few degrees below the measured air temperature. Dew point is the temperature at which water vapor condenses on surfaces, such as when morning dew condenses on grass.Full Answer >
Higher temperatures make higher levels of humidity possible. This is because warm air is capable of holding more moisture than cold air. Warm air has a stronger bond to water molecules, making the air feel drier and allowing more water to bond with air.Full Answer >
Forty-five percent relative humidity is the comfortable relative humidity level. Below 30 percent humidity, the air feels dry, and above 52 percent relative humidity, the air feels very moist.Full Answer >