Campbell CS475A, Руководство по эксплуатации продукта

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Horizontal structures: Avoid mounting near horizontal structural surfaces such as beams,
brackets, and sidewall joints because these surfaces reflect a strong signal. If these
structures cannot be avoided, use the False Echo Supression command
(
aXFES=xxx.xx!
) to map out the interfering structures in the beam profile.
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Obstructions: Mount the sensor away from obstructions (both above and under water) in
the radiation beam path, which spreads as it leaves the sensor. Obstructions to be aware of
include excessive waves, splashing, pipes, wires, rocks, bridge piers, and logs. Determine
the required clearance for the beam angle using the following formula and
FIGURE 7-1 (p.
13).
Clearance radius formula:
CONE
radius
= 0.167(CONE
distance
)
Where,
CONE
distance
= the distance to the reference line ( FIGURE 6-1 (p. 8))
CONE
radius
= clearance radius in the same measurement units as the CONE
distance
FIGURE 7-1. Beam path clearance
CAUTION:
Be aware that bridges contract and expand with temperature changes. Traffic loads or
trucks can also cause changes to the bridge height.
CS475A Radar Water Level Sensor 13