How does an ultrasonic level sensor work?

Dokument-ID

Dokument-ID TE7486

Veröffentlichungsdatum

Veröffentlichungsdatum 25.10.2018
Frage
How does an ultrasonic level sensor work?
Zusammenfassung
Ultrasonic level sensor theory of operation.
Antwort
The ultrasonic transducer is mounted over the flow stream at the proper location for head/level measurement.  The transducer emits a pulse of sound at a high frequency and waits for the echo to return from the surface of the water.  The time it takes for this echo to return is directly related to the distance between the transducer and the surface of the water.  As the level in the flow stream increases, the time it takes for the echo to return to the transducer decreases (distance is shorter).
By continuously transmitting these pulses and timing the returning echoes, the sensor measures the level of liquid in the flow stream.  After measuring the level, the microprocessor converts the level reading to a flow rate based on the user-defined characteristics of the primary device.
 

Hat dir diese Antwort geholfen?

Wird gesendet...
Vielen Dank für Ihr Feedback.
Beim Senden ist ein Fehler aufgetreten. Versuchen Sie es erneut.