Systems and methods for remotely measuring a liquid level using time-domain reflectometry (tdr)

A remote pulse TDR liquid level measurement system (100) and method may include inserting a probe (106) into a body of water (104). The probe (106) has a probe/air interface, and the body of water includes an air/water interface. A narrow pulse is remotely transmitted to the probe (106) via a coaxia...

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Bibliographische Detailangaben
Hauptverfasser:	DAYAL, YOGESHWAR, SPLICHAL, WILLIAM FRANCIS, GARDNER, ERIC RANKIN, LENTNER, BRUCE J, SAWYER, STEVEN D, EISERMANN, PHILIP O
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PHYSICS TESTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A remote pulse TDR liquid level measurement system (100) and method may include inserting a probe (106) into a body of water (104). The probe (106) has a probe/air interface, and the body of water includes an air/water interface. A narrow pulse is remotely transmitted to the probe (106) via a coaxial cable (118). A first impedance mismatch is received from the probe/air interface in a form of a positive reflected pulse, and a second impedance mismatch is received from the air/water interface in a form of a negative reflected pulse. A time between the positive reflected pulse and the negative reflected pulse is calculated, and the time is converted to a distance, the distance being indicative of the water level.