Product number: H814
The Hilton Humidity Measurement Bench H814 allows students to investigate most of the wide variety of methods that are available to measure the humidity of air. This is often a difficult concept for students to understand but it is fundamental for the study of air conditioning and evaporative cooling methods such as cooling towers.

A self contained bench top unit comprising a number of different types of humidity meters and a small air duct with fan for variation of air velocity together with a simple air velocity meter. Students can investigate the use of the standard wet and dry bulb whirling hygrometer in the normal way. Using the air duct the effect of air velocity on wet bulb temperature can be investigated. The wet and dry bulb method can be compared with a direct reading psychrometer, hair hygrometer, a synthetic material hygrometer and an electronic humidity sensor. A small steam humidifier is supplied in order to enable students to simply adjust the humidity seen by the various sensor types.

All of the measured parameters can be related using the large encapsulated psychrometric chart that is supplied and by detailed calculation. The manual supplied, contains suggested experimental procedures, sample test results and detailed calculation examples based upon the sample results.

Specifications and resources