Extech RH390

Precision Psychrometer

Measure humidity and temperature simultaneously with the RH390 Precision Psychrometer from Extech. A dual-illuminated readout can be alternated to display wet bulb and humidity, or dew point and humidity, or temperature and humidity. This handheld device registers temperatures from -22 degrees to 199 degrees F (-30 degrees to 100 degrees C) and measures the full spectrum of relative humidity with ±2% accuracy between 20 and 90% RH. Complete with carrying case and 9V battery.

Specifications

General
Dew Point	-22 to 199 °F (-30 to 100 °C)
Dew Point Max Resolution	0.1°
Relative Humidity	0 to 100%
Relative Humidity Basic Accuracy	±2%
Relative Humidity Max Resolution	0.1%
Temperature (Air)	-22 to 199 °F (-30 to 100 °C)
Temperature (Air) Basic Accuracy	±1.8 °F/1 °C
Temperature (Air) Max Resolution	0.1 °F/ °C
Wet Bulb	32 to 176 °F (0 to 80 °C)
Wet Bulb Max Resolution	0.1°