The THWD-3, a relative humidity-temperature reader, uses a precision capacitance sensor to deliver accurate performance with long-term stability. This high-accuracy instrument measures the full range of relative humidity from 0 percent to 100 percent and features a wide ambient temperature measurement range from -4 to 140°F (-20 to 60°C). The sensor is mounted on a long shaft extending from the top surface of the unit, making probing into ductwork and hard-to-reach areas easier. The large LCD displays two measurements simultaneously with a full range of display options including hold, min, max, dew point, and wetbulb. The TH-3 relative humidity-temperature reader includes all the features of the THWD-3 except the ability to measure wet bulb and dew point. Both instruments come with a soft carrying case, sensor cover, installed battery, and manual.
Amprobe Test Tools, P. O. Box 9090, Everett, WA 98206; 877-267-7623; firstname.lastname@example.org; www.amprobe.com