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Reduce effects of wind on precipitation measurements
Overview
The Alter Screen 24 is a wind screen mounted around a rain or snow gauge. It consists of 32 leaves that hang freely and swing as the wind moves past them. The Alter Screen 24 helps minimize the effect of wind on the rain or snow measurements.
Read MoreDetailed Description
The AlterScreen24 is a wind screen for our tipping bucket rain gauges that can minimize the effect of strong winds on the rain measurements.
It includes 32 leaves that swing as the wind moves past them. The leaves are evenly spaced on a 48-in.-diameter ring. The ring is comprised of four quadrants. Each quadrant mounts onto 24-in.-long posts made of galvanized-steel pipe.
The AlterScreen24 should be installed so that the top edge of the rain gauge funnel is ½ in. to 1 in. below the top edge of the wind screen leaves. Typically, the wind screen is mounted onto the concrete pad that also supports the rain gauge. However, concrete piers or wooden supports can also be used. To function properly, both the rain gauge and wind screen need to be installed correctly. The foundation size must be at least 4 ft x 4 ft if the same concrete or wooden foundation is used for both the wind screen and tipping bucket rain gauge. A larger area may be desirable to more easily access the wind screen and tipping bucket rain gauge.
Specifications
- Alter Manufacturer: Novalynx
- Leaves Number: 32
- Material: zinc-plated 20-gauge steel
- Width: 7.6 cm (3 in.)
- Length: 40.6 cm (16 in.)
- Number of Posts: four
- Length: 0.9 cm (3 ft)
- Material: galvanized steel
- Ring Installed Diameter: 1.2 M (4 ft)
- Spacers: 3/4–in. EMT
- Installed Height: 0.61 m (2 ft)
- Shipping Weight: 20.4 kg (45 lbs)