SR50A Sonic Ranging Sensor
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4 Sensor Mounting and Installation
4.1 Beam Angle
When mounting the SR50A, the sensor's beam angle needs to
be considered (see Figure 3 Beam Angle Clearance). It is
always best to mount the SR50A perpendicular to the intended
target surface. The SR50A has a beam angle of approximately
30 degrees. This means that objects outside this 30 degree
beam will not be detected nor interfere with the intended target.
Any unwanted target must be outside the 30 degree beam
angle.
The following formula is used to determine the required
clearance for the beam angle. By inserting a height value in
the Formula, a Clearance Radius in the same measurement
units as the height can be obtained.
Clearance Radius formula:
CONE
0.
=
CONE
height
radius
268
FORMULA1. Beam angle clearance Radius
Figure 3 Beam Angle Clearance
4.2 Mounting Height
Any target to the SR50A should be at least 50cm or more from
the face of the transducer. An attempt should also be made to
not mount the sensor too far from the target surface. The
