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If there is strong eddy or vortex in the container, such as eddy caused by the stirrer
or strong chemical reactions, the measurement can be difficult. The ideal method is
to install the sensor probe in the waveguide or by-pass pipe for measurement.
Great fluctuation at medium
surface –
use by-pass pipe or wavegui-
de for measurement
(2) Common Installation Errors
❶
Bubble:
if the bubbles on the medium surface are large and the bubble layer is
thick, measuring error is likely to take place and the reflected ultrasonic wave may
even unable to be received. Measures shall be taken to prevent the generation of
bubbles or the sensor shall be installed in the by-pass pipe for measurement.
Other measuring meters can also be used, such as radar liquid level meter or mag-
netostrictive liquid level meter.
Occasions when bubbles are
generated