When air passes over the cloth to evaporate the water the evaporative cooling shows the wet bulb temperature on the thermometer.
Hvac wet bulb thermometer.
There are three types of psychrometer.
Analog sling and digital.
A wet bulb thermometer indicates a temperature close to the true thermodynamic wet bulb temperature.
Wet the durable sock and clip to evaporator filters for indoor wet bulb great for finding target evaporator exit temperature.
Wet bulb temperature is a measurement taken by a thermometer that has a bulb covered by a water soaked cloth.
Temperature of the ordinary air measured by the thermometer when it is covered by wet cloth or wick is called as the wet bulb temperature commonly referred to as wbt.
But why do we care about this measurement.
If you have ever seen someone using a sling psychrometer that is exactly what is happening hopefully you have a wrist that is well calibrated to 900 fpm.
The psychrometer does measure relative humidity by utilizing two thermometers called dry bulb and wet bulb.
Clip to return vents for indoor wet bulb temperature great for target superheat calculations.
The atwb1 k type wet bulb thermocouple can clip to hvac r equipment for convenient placement and hands free testing.
Amazon s choice for wet bulb thermometer hvac preciva digital psychrometer thermo hygrometer lcd mini temperature and humidity meter with dew point and wet bulb temperature hygrometer for industry agriculture meteorology 9v battery included.
Despite what you might think at first wet bulb temperature has nothing to do with light bulbs.
It s the tool that is used to measure relative humidity.
This thermometer is part of a device called a psychrometer.
A psychrometer is essentially the type of hygrometer.
It is instead the temperature read by a special thermometer that is wrapped in water soaked fabric and ventilated.
However both of them are different in terms of how it works.
In fact wet bulb temperature is the temperature a damp thermometer bulb will read when exposed to a 900 fpm feet per minute air stream.
The wet bulb temperature of air is also measured by the ordinary thermometer but the only difference is that the bulb of the thermometer is covered by the wet cloth.