Temperature measuring instrument VA 20

powerrelative humidityflow

PCE-VA 20 is a air humidity meter for assessing wind, weather, indoor / outdoor environmental climate conditions as well as for testing heating, ventilation and air conditioning or cooling (HVAC) systems. In addition to measuring air temperature, this air humidity meter measures dew point temperature, wet-bulb temperature, air flow velocity (i.e., wind speed), volume flow and relative humidity (RH). This air humidity meter features a 10 cm / 3.9" Ø fan impeller, easy-to-read backlit LCD, and functions such as display hold, average value, maximum value, minimum value, battery-saving automatic power off, low-battery indicator, and metric or imperial unit selection. Highlights - Measures air flow velocity, volume flow, relative humidity, air temperature, dew point temperature and wet-bulb temperature - Air flow velocity range: 0.2 ... 30 m/s (39.4 ... 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 - 10 cm / 3.9" 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 imperial unit selection functions Specification Technical Specification Air flow velocity measuring range - 0.2 ... 30 m/s (39.4 ... 5905.5 fpm) Air flow velocity accuracy - 20 m/s: ±(3% of rdg. + 0.3 m/s) Air temperature measuring range - -20 ... 60 °C / -4 ... 140 °F Air temperature accuracy - ±0.6 °C Air temperature resolution - 0.1 °C / °F Humidity measuring range - 0.1 ... 99.9 % r.H. Humidity accuracy - ±3 % r.H. (at 25 °C / 77 °F and 10...90 % r.H.)