Correcting for two-phase flow in a digital flowmeter
DC CAFCFirst Claim
1. A controller for a Coriolis effect flowmeter having a flowtube to receive a flowing liquid, the controller comprising:
- one or more processing devices coupled to the sensor, the processing devices configured to;
send a drive signal to a driver coupled to the flowtube to oscillate the flowtube;
receive a sensor signal from a sensor coupled to the flowtube, wherein the sensor signal is related to an oscillation of the flowtube; and
determine, based on the sensor signal, the flow rate of the flowing liquid during a transition of the flowtube from a first state in which the flowtube is substantially empty of the flowing liquid to a second state in which the flowtube is substantially full of the flowing liquid.
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Litigations
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Accused Products
Abstract
A flowmeter is disclosed. The flowmeter includes a vibratable conduit, and a driver connected to the conduit that is operable to impart motion to the conduit. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to detect a single-phase flow condition and process the sensor signal using a first process during the single-phase flow condition to generate a validated mass-flow measurement. The controller is also operable to detect a two-phase flow condition and process the sensor signal using a second process during the two-phase flow condition to generate the validated mass-flow measurement.
100 Citations
19 Claims
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1. A controller for a Coriolis effect flowmeter having a flowtube to receive a flowing liquid, the controller comprising:
one or more processing devices coupled to the sensor, the processing devices configured to; send a drive signal to a driver coupled to the flowtube to oscillate the flowtube; receive a sensor signal from a sensor coupled to the flowtube, wherein the sensor signal is related to an oscillation of the flowtube; and determine, based on the sensor signal, the flow rate of the flowing liquid during a transition of the flowtube from a first state in which the flowtube is substantially empty of the flowing liquid to a second state in which the flowtube is substantially full of the flowing liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A Coriolis effect flowmeter comprising:
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a flowtube to receive a flowing liquid having a flow rate; at least one sensor coupled to the vibratable flowtube, wherein the sensor generates a sensor signal that is related to an oscillation of the flowtube; at least one driver coupled to the vibratable flowtube, wherein the driver generates a force to oscillate the flowtube one or more processing devices coupled to the sensor, the processing devices configured to; send a drive signal to the driver to oscillate the flowtube; receive the sensor signal; and determine, based on the sensor signal, the flow rate of the flowing liquid during a transition of the flowtube from a first state in which the flowtube is substantially empty of the flowing liquid to a second state in which the flowtube is substantially full of the flowing liquid.
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11. A method comprising:
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passing a flowing liquid through a flowtube associated with a Coriolis effect flowmeter; oscillating the flowtube; receiving a sensor signal from a sensor coupled to the flowtube, wherein the sensor signal is related to the oscillation of the flowtube; and determining, based on the sensor signal, the flow rate of the flowing liquid during a transition of the flowtube from a first state in which the flowtube is substantially empty of the flowing liquid to a second state in which the flowtube is substantially full of the flowing liquid. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification