Description
Anyone whose work depends on calculating humidity levels will appreciate the advantages of the Extech RH490 Hygrometer. In addition to measuring relative humidity in 30 seconds, this portable instrument captures dew point, wet bulb, temperature, and water vapor levels in grams per kilogram and grains of moisture per pound (GPP). This service tool will store maximum and minimum readings until the memory is cleared and includes a data hold button for rapidly fluctuating measurements. Includes carrying case and 9V battery.
Ref. HR490