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Side 33
Ultrasonic Level Meter
Operation Manual
Great fluctuation at medium surface – use by-pass pipe or waveguide for
measurement
4.3.3.2 Common installation errors
①
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 magnetostrictive liquid level meter.
Occasions when bubbles are generated
②
Incorrect installation direction of the sensor
If the sensor is not installed aligned to the medium surface, the measuring
signal will be weakened. To ensure the best measurement effect, the axis of
sensor shall be aligned to the surface, i.e. perpendicular to the surface of
measured interface.
