Thermo Hygrometer with Capture Hoods, 10 cm / 3.9 in Ø Fan Impeller

Multifunction Anemometer with Flow Hoods Combination anemometer-hygrometer-thermometer for HVAC system balancing. Measures air flow velocity, volume flow, relative humidity, air temperature, dew point temperature and wet-bulb temperature. Air flow velocity range: 0.2 to 30 m/s (39.4 to 5905.5 fpm) Accuracy: ±(1.5% of measured value + 0.3 m/s) when less than 20 m/s, ±(3% of measured value + 0.3 m/s) when more than 20 m/s. Resolution: 0.1. Includes 2 x capture hoods (1 x round 210 mm / 8.3 in Ø, 1 x square 346 x 346 mm / 13.6 x 13.6 in) 10 cm / 3.9 in Ø fan impeller. Easy-to-read backlit LCD. Display hold, average value, maximum value, minimum value, battery-saving automatic power off, low-battery indicator, and metric or imperia.