FTS 21216, Руководство по эксплуатации

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700-SDI-RADAR-LX-80-Man Rev 1 08 Oct 2021 10 /49
INSTALLATION
4.1 SITE SELECTION
For best results, the water’s surface being measured should be calm, clean of vegetation, rocks, sand
deposits or other obstacles. Additionally, the mounting location of the radar sensor should provide
an unobstructed line to the measured surface. Any close object in the vicinity of the sensor can
reduce accuracy and introduce offsets in measurements.
The radar beam is defined by a 3 dB width angle and covers a circular area on the water’s surface.
The size of the beam’s pattern on the water’s surface is dependent on the distance from the radar to
the water. Refer to Table 4-1 to determine the radar beam’s footprint and ensure it is free of
obstacles and other interfering factors previously listed.
The mounting location should be sturdy as vibrations of the mounting structure can affect the
radar’s algorithm ability to discard detected obstacles.
Table 4-1: Radar Height and Radar Beam Diameter at Surface
METRIC IMPERIAL
Radar Height
above water
(m) Radar Beam
Diameter at
Surface (m) Radar Height
above water
(ft and in) Radar Beam
Diameter
(ft and in)
0.3 0.03 11.8 in 1.18in
0.5 0.04 19.7 in 1.57 in
1 0.09 39.4 in 3.54 in
2 0.17 6 ft 6.7in 6.7 in
3 0.26 9 ft 10 in 10.24 in
4 0.35 13 ft 1.5 in 1 ft 1.78 in
5 0.44 16 ft 4.85 in 1 ft 5.32 in
6 0.52 19 ft 8.2 in 1 ft 8.5 in
7 0.61 22 ft 11.6 in 2 ft
8 0.70 26 ft 3 in 2 ft 3.56 in
9 0.79 29 ft 6.3 in 2 ft 7.1 in
10 0.87 32 ft 9.7 in 2 ft 10.25 in
11 0.96 36 ft 1 in 3 ft 1.8 in
12 1.05 39 ft 4.4 in 3 ft 5.34 in
13 1.14 42 ft 7.8 in 3 ft 8.88 in
14 1.22 45 ft 11.2 in 4 ft
15 1.31 49 ft 2.5 in 4 ft 3.58 in
20 1.75 65 ft 7.4 in 5 ft 8.9 in
25 2.18 82 ft 0.25 in 7 ft 1.83 in
30 2.62 98 ft 5.1 in 8 ft 7.15 in