7. Liquid level sensors and detectors
The most commonly used detection principles are as follows:
float or plunger sensors (figure 21);
conductivity sensors (figure 22); for this measurement method, the liquid must be conductive;
measurement by weighing (figure 23);
ultrasonic sensors (figure 24): an ultrasonic wave coming from an ultrasonic transmitter – receiver is reflected on the surface of the liquid; after reflection, the wave is received again by the probe, which measures the time between transmission and reception of...
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Liquid level sensors and detectors
Fluid flow sensors and meters
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