Model RH401 has a built-in infrared thermometer with an 8:1 distance-to-target ratio and an adjustable emissivity from 0.3 to 1.0. The meter measures both ambient and surface temperatures and automatically calculates the infrared surface temperature/dewpoint differential. The backlit triple display enables simultaneous viewing of relative humidity and surface temperature, along with air temperature, dewpoint or wet bulb.
Digital Psychrometer with Infrared Thermometer
November 1, 2005