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4.2 Installation Guide
4.2.1 Understand Terminology :
❶
Measuring Range:
The meaning of measuring range is very important for
meter type selection. Please refer to the diagrams below.
❷
Emitting Angle and False Echo
Ultrasonic wave beam is gathered by the probe. The emitting of impulse wave beam
is like the light beam of flashlight. The further it is from the probe, the greater the
diffusion area is.
Any objects within the launch angle, such as pipes, brackets, welds, stiffeners, stir-
ring propellers, and wall-mounted objects, will cause strong false echoes, especially
objects closer to the probe within the launch angle.
For example:
the false echo caused by a pipe at a distance of 6 meters from the
probe is 9 times stronger than the false echo caused by the same pipe at a distance
of 18 meters from the probe.
Try to make the axis of the sensor perpendicular to the surface of the medium,
and avoid any other objects within the emission angle. Such as: pipes and brac-
kets.
Summary of Contents for LUDP
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