高空工作的風速監察
* 吊船工作安全指引: 可承受每秒 14 米的持續風速 / 強達每秒 31 米的陣風。
**天秤工作安全指引 : 風速超過每小時62公里，立即停止吊秤工作。
The Air Velocity Meter is a measuring instrument for various wind related parameters. It has got an impeller diameter of ten centimeters. Moreover, if required, it is possible to order a set of flow hoods which provide a fast and reliable method which helps to use the 100 mm (4-inch) large impeller head optimally.
Air Velocity Meter VA 20
Wind speed measurement range 0.2 ... 30 m / sec. Wind speed accuracy <20 m / sec .: ± (1.5% of the MW + 0.3 m / sec.)
> 20 m / sec .: ± (3% MW of +0.3 m / sec.)Air temperature measuring range -20 ... +60 ° C Wind temperature accuracy ± 0.6 ° C Wind temperature resolution 0.1 ° C / ° F Humidity measuring range 0.1 ... 99.9% RH Humidity resolution 0.1% RH Humidity accuracy ± 3% RH (at 25 ° C and 10 ... 90% RH)
other: ± 5% RHTemperature response time 60 seconds Humidity response time 60 seconds LCD update 1 x per second Wet bulb temperature display -20 ° C ... +59,9,9 Dew point display -5 ... +59.9 ° C Flow rate display 0 ... 99999 m³ / min Flow resolution 0.1 (0 ... 9999.9) or 1 (10000 ... 99999) Automatic power off after 20 minutes of inactivity LCD size 32.5 x 54 mm (H x W) Operating Conditions 0 ... + 50 ° C, RH <80% Storage conditions -10 ... +50 ° C, RH <90% Dimensions 269 x 106 x 51 mm Weight approx. 200 g Power supply 4 batteries (AAA)