Handheld Digital Anemometer Wind Speed Measurement Measurer Air Velocity Airflow Meter Gauge with LCD Backlight Measuring 0.40m/s~30.00m/s

Parameters:
Display: LCD
Max. Counts: 9999
Air Velocity: 0.40-30.00 m/s
Sampling Rate: Approx. One reading per second
Sensor: Air velocity/ sensor; angled vane arms with bearing
Beaufort Wind Scale: 0-12
Max/Min/Avg: Record and view minimum, maximum, average
Data Hold: Freeze reading
Operating Conditions: 0-40℃(Temperature), ＜80%RH(Humidity), ＜2(altitude)
Auto Power Off: 10 minutes
Power Supply: 3 * 1.5V AAA(LR03) batteries (not included)

Accuracy Specifications of air velocity measurements:
m/s (meters per second) 0.40-30.00 ±(2.0%+ 0.5m/s)
km/h (kilometers per hour)1.40-108.0 ±(2.0%+ 1.8km/h)
ft/s (feet per second)1.30-98.50 ±(2.0%+ 1.6ft/s)
ft/m (feet per minute)78.00-5900 ±(2.0%+ 10ft/m)
knots (nautical miles per hour)0.80-58.30 ±(2.0%+ 1.0knots)
mile/h (miles per hour)0.90-67.10 ±(2.0%+ 1.1mile/h)

Note:
*Batteries are not included.
*Do not touch the fan blade with .
*Do not store or operate the instrument in area with high temperature or humidity.
*In use, do not let the strong light directly shine on the fan, in order to measurement errors.
* violent vibration.
*Remove the battery before storing the instrument for a long time.
*To measure the airflow, the cross-sectional area of the tested air duct be determined and input into the anemometer.