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Downlook Ultrasonic Sensor
Section 4
Figure 32 Ultrasonic Sensor Beam Angle
Figure 33 Choosing the Appropriate Sensor Height
Measure for D
Measure for D
2
Measure
for D
1
3
This drawing is not to scale.
Zero Flow Point
0.1
1
10
100
D1
0.1
1
10
100
D2
0 2 4 6 8 1012141618202224
θ : Angle of Obstruction from Axis
Maximum Distance from Sensor to Target
Distance from Sensor to Obstruction
Possible False Echo
Safe Area