Campbell Scientific 260-953 Alter-Type Wind Screen for Tipping Bucket Rain Gages - Manual (Page 10)

260-953 Alter-Type Wind Screen for Tipping Bucket Rain Gages
Each post has a 3/4-in. NPT thread at one end (see Figure 3-4). If the posts are
to be directly embedded into the concrete, use a floor flange on the end of each
post as an anchor to help prevent it from pulling out of the concrete. Short
pieces of pipe with threaded couplers may also be embedded into the concrete,
allowing the posts to be threaded directly into the concrete. The posts should
be leveled vertically during installation.
3.4 Gate
One of the posts has a 45º notch cut out of it. This post is for the wind screen
gate (see Figure 3-4), which is used to access the tipping bucket rain gage.
Plan the installation so that the gate is at the desired location for accessing the
rain gage.
FIGURE 3-4. Gate quadrant mounted onto posts
3.5 Mounting the Ring Quadrants onto the Posts
Two people typically are required to lift the ring quadrants and place them onto
the posts. Each end of the ring quadrant has a rod. These rods fit into the short
pieces of pipe that are welded onto the posts (see Figure 3-4). The gate
quadrant has a shorter rod that fits into the post with a 45º notch (see Figure
3-4).
The posts may need to be flexed slightly to fit the ring quadrants. After the
ring quadrants have been installed, inspect each leaf to ensure that it can swing
freely.
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