Whirling Hygrometer

This professional whirling hygrometer (sling psychrometer) offers the maximum level of accuracy for the measurement of relative humidity utilising wet and dry bulb mercury-filled thermometers. The unit incorporates a water reservoir linked to the wet bulb by the means of a cotton sleeve.

The thermometer tubes measure temperature over the range of 0 to +50°C enabling the % RH to be calculated utilising the chart supplied.