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.
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.
A self contained unit with two electronic humidity sensors and three analogue sensors. These include direct reading psychrometer, hair hygrometer, synthetic material hygrometer, capacitive sensor hygrometer with temperature measurement, and whirling (centrifugal) wet and dry bulb sensor.
An air duct and fan and simple air velocity meter allows the effect of air velocity to be investigated.
An optional digital temperature wet and dry bulb sensor is available.
An optional 35 channel data acquisition system and software is available for use with the optional digital temperature wet and dry bulb sensor and any other compatible transducers.
A: 220-240 Volts, Single Phase, 50Hz (With Earth/ground).
B: 110-120 Volts, Single Phase, 60Hz (With earth/ground).