20
blades and other things that can block the sound waves.
■
Installation port, flange socket too long, will affect the sound
wave propagation,reduced effective range. The probe should
be extended from the mounting opening or close to it
■
If there is fluctuation in liquid level,
or if there are float balls, foam, strong
liquid
volatility,
probe
easy
condensation, objects that block sound
waves, etc., which can be solved by
adding
a
plastic
tube
to
the
container,so that the sound waves
spread only in the plastic pipe,to
ensure the stable and reliable of the
measurement .It requires plastic pipe wall is smooth, flat,
seamless.The pipe should from the flange to the bottom of the
container. Two small holes must open in upper and lower ends
of each side of the tube , to ensure consistent level of inner
and outer tube. If the plastic tube can not be down to the
bottom of the container, a oblique truncated short tube can be
used to shield false signal .
