ULTRASONIC FLOW SENSOR AND THERMAL ENERGY SENSOR WITH NON-INVASIVE IDENTIFICATION OF NO-FLOW AND IMPROVED ACCURACY

ULTRASONIC FLOW SENSOR AND THERMAL ENERGY SENSOR WITH NON-INVASIVE IDENTIFICATION OF NO-FLOW AND IMPROVED ACCURACY

A flow sensor configured to measure the flow of a fluid flowing through a tubular structure comprises a first detection unit that is configured to detect flows above a predefined lower flow level representing the lowest flow that can be measured by the first detection unit and a second detection uni...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: MADSEN, Bo Eskerod
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
MEASURING
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:A flow sensor configured to measure the flow of a fluid flowing through a tubular structure comprises a first detection unit that is configured to detect flows above a predefined lower flow level representing the lowest flow that can be measured by the first detection unit and a second detection unit that is configured to estimate the flow below the lower flow level (on the basis of the temperature difference between the surroundings and a fluid). The second detection unit is configured to estimate the flow below the lower flow level on the basis of one or more measurements made in a flow-calibration-area in which the flow sensor can detect the flow and in which the flow depends on the temperature difference.