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Windbreak
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Windbreak 

 


▲ Fig.01　Windbreak of Rain gauge


 

▲ Fig.02　Windbreak of Snow(rain) gauge

　
 

▲ Fig.03　Windbreak of Digital rain gauge

① Outline
WD-400 is a body-attached windbreaker with a hole protrusion developed for the first time in the world by Wedaen Corporation. Products designed by comprehensively analyzing the characteristics of each country, including Japan, the United States, and Europe, and expulsion the pros and cons. A protruding vent is formed on the circular side of the windbreaker, Strong winds around the water outlet (Ø415 mm) and Slowing down the whirlwind phenomenon, the direction of rainwater and snow was aligned and measured quantitatively. 

② Characteristic
1) Precipitation measurements often generate thousands of measurements depending on geographical features and climate change, The actual volume of the area to be measured has a large or small margin of error depending on the conditions. To measure without error, simply take the actual amount that falls and measure it. However, the rainwater gutter (gutter) The larger it is, the closer it can be to the actual amount, and the smaller it is, the less accurate it will be.
2) If the measuring cup is made larger, the accuracy will increase, but if it is made smaller, errors will also increase. However, rather than unconditionally expanding the sorghum openings, the diameter of the sorghum openings was set at 20cm as an international standard. (25cm for rain gauge) is recommended.
3) Windbreaks are installed to ensure actual measurements within the range of international standards. Each country has different requirements. Let's look at an example of a method. There is a place where the fence is made of a disk, and the board is floating or swinging. It is used as a floating fixed type. This WD-400 windbreaker simplifies installation, is economical for the user, and reduces wind speed. It was munufactured as a reliable product, incliuding quietness.
 
③ Comprehensive analysis
1) The problem is that the wind speed naturally changes around the gutter causing rainwater to fall into the gutter. Or, the goal is to make it even in the direction of the eyes. If it is a disk, it can amplify the vortex. The floating plate rocking method is suitable for light winds, but the actual weight deviates significantly from strong winds. As the plate heads toward the water outlet, rainwater will splash out and collect more than the actual amount,  and the ripening effect of the wind will It becomes meaningless.
2) Taking this into account, the vents on the windshield were designed to be staggered to reduce direct wind by half. And with a strong wind The generated whirlwind or direct wind was slowed down so that the falling objects falling into the gutter were caught evenly. In addition, it is designed as water inlet a body-fixed type, eliminating installation variations and maximizing convenience in maintenance.

④ Specifications
1) Body : Φ415mm(W)Ⅹ180mm(H)Ⅹ2mm(T)
2) Material : Aluminum
3) Paint : Silver color instant cold galvanize
4) Ventilation Opening : 16mmⅩ40-hole Projection method
5) Fixture : Φ250mm (For snow gauge) / Φ200mm (For rain gauge)
6) Inlet : Φ415mm

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