Without a doubt, the main advantage of this handheld cup vane Air velocity meter is that it doesn't need to be held exactly in the direction of the wind. Air velocity meter with impellers typically have to be held exactly in the direction of the air flow to take accurate measurements. However, this cup vane Air velocity meters system is so sensitive that it responds to the smallest of air currents.
Air Velocity Meter A420
Measurement range 0.9 to 35.0 m/s
2.5 to 126.0 km/h
1.4 to 68.0 knots
1.6 to 78.2 miles/h
144 to 6895 ft/min
Resolution 0.1 m/s
Accuracy ±2% Cup vane diameter 70mm Display 28 x 19mm LCD Enclosure plastic Power 4 AAA batteries (1.5V) Cups plastic with 135mm diameter Dimensions 190 x 40 x 32mm Weight 180g Operating temperature 0 to 50°C Operating humidity <80% r.h.