Hvac Wet Bulb Thermometer

This thermometer is part of a device called a psychrometer.

Hvac wet bulb thermometer.

Wet bulb temperature is a measurement taken by a thermometer that has a bulb covered by a water soaked cloth. However both of them are different in terms of how it works. Analog sling and digital. The atwb1 k type wet bulb thermocouple can clip to hvac r equipment for convenient placement and hands free testing.

It s the tool that is used to measure relative humidity. The wet bulb temperature is the lowest temperature that can be reached under current ambient conditions by the evaporation of water only. It is instead the temperature read by a special thermometer that is wrapped in water soaked fabric and ventilated. Indoor wet bulb measurement is useful for figurin.

When air passes over the cloth to evaporate the water the evaporative cooling shows the wet bulb temperature on the thermometer. 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. 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. A wet bulb thermometer indicates a temperature close to the true thermodynamic wet bulb temperature.

Despite what you might think at first wet bulb temperature has nothing to do with light bulbs. 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. Clip to return vents for indoor wet bulb temperature great for target superheat calculations. Wet the durable sock and clip to evaporator filters for indoor wet bulb great for finding target evaporator exit temperature.

But why do we care about this measurement. Kung fu maintenance demonstrates how to test indoor wet bulb temperature idwb measure for air conditioners. 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. There are three types of psychrometer.