DIGITAL FLOWMETER
First Claim
1. A controller for a flowmeter comprising:
- an input module operable to receive a sensor signal from a sensor connected to a vibratable flowtube, the sensor signal related to a fluid flow through the flowtube;
a signal processing system operable to receive the sensor signal, determine sensor signal characteristics, and output drive signal characteristics for a drive signal applied to the flowtube;
an output module operable to output the drive signal to the flowtube; and
a control system operable to modify the drive signal and thereby maintain oscillation of the flowtube during a transition of the flowtube from a substantially empty state to a substantially full state.
3 Assignments
0 Petitions
Accused Products
Abstract
A controller for a flowmeter includes an input module operable to receive a sensor signal from a sensor connected to a vibratable flowtube. The sensor signal is related to a fluid flow through the flowtube. The controller also includes a signal processing system operable to receive the sensor signal, determine sensor signal characteristics, and output drive signal characteristics for a drive signal applied to the flowtube. An output module is operable to output the drive signal to the flowtube and a control system is operable to modify the drive signal and thereby maintain oscillation of the flowtube during a transition of the flowtube from a substantially empty state to a substantially full state.
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Citations
7 Claims
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1. A controller for a flowmeter comprising:
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an input module operable to receive a sensor signal from a sensor connected to a vibratable flowtube, the sensor signal related to a fluid flow through the flowtube; a signal processing system operable to receive the sensor signal, determine sensor signal characteristics, and output drive signal characteristics for a drive signal applied to the flowtube; an output module operable to output the drive signal to the flowtube; and a control system operable to modify the drive signal and thereby maintain oscillation of the flowtube during a transition of the flowtube from a substantially empty state to a substantially full state. - View Dependent Claims (2, 3)
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4. A method for operating a flowmeter comprising:
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maintaining oscillation of a flowtube associated with the flowmeter during a substantially empty state of the flowtube; maintaining oscillation of the flowtube during an onset of fluid flow through the flowtube; and determining, based on sensor signals from a sensor connected to the flowtube, a property of the fluid flow. - View Dependent Claims (5, 6, 7)
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Specification