All you need is a set of readings from a sling psychrometer: 1) the ambient temperature (Ta) and 2) the wet bulb temperature (Tw). The atmospheric humidity is determined by calculations, steam tables, or using a psychrometric chart. (2.0) ESTIMATING RELATIVE HUMIDITY WITH A SLING PSYCHROMETER Relative humidity can be determined using a sling psychrometer by using the saturation vapour pressure chart, provided below. The Bacharach Sling Psychrometer is an easy and affordable way to measure relative humidity levels quickly and accurately.

Evaporation cools the wet-bulb more than the dry-bulb, and the humidity is obtained as a function of change in temperature. The bulb of the other thermometer is covered with a silk or muslin sleeve that is kept moist to record the wet bulb temperature. A sling psychrometer can be used to find relative humidity, which is expressed as a percentage. The bulb of one thermometer is placed in direct contact with the room air to measure dry-bulb air temperature. A psychrometer in which the wet- and dry-bulb thermometers are mounted upon a. These two thermometers are called dry-bulb and wet-bulb. Looking for sling psychrometer Find out information about sling psychrometer. Includes: wet bulb wick, 2 dry bulb thermometers, Teachers Guide with Psychometric. The Sling Psychrometer consists of two thermometers that are turned by vigorously swinging the handle and exposing the thermometers to rapid air movement. Determine dew point and relative humidity with this easy-to-use kit. The Sling Psychrometer contains a slide rule calculator that correlates wet- and dry-bulb thermometer indications for direct reading of relative humidity. It accurately determines percent relative humidity without the necessity of consulting complex tables. Gardner USA – worldwide distributors, producers, and designers of quality physical and inspection instruments for the paint, coatings, and related industries, introduces the Bacharach Sling Psychrometer.

Sling psychrometer