Coriolis Flow Meter and Method for Determining Flow Characteristics
First Claim
1. A Coriolis flow meter (5) comprising one or more flow conduits (103), at least two pickoff sensors (105, 105′
- ) affixed to the one or more flow conduits (103), and a driver (104) configured to vibrate the one or more flow conduits (103), with the Coriolis flow meter (5) being characterized by;
meter electronics (20) coupled to the at least two pickoff sensors (105, 105′
) and to the driver (104), with the meter electronics (20) being configured to vibrate the one or more flow conduits (103) of the flow meter with a first vibration frequency and in a first out-of-phase bending mode, measure a first vibrational response of the one or more flow conduits (103), with the first vibrational response being generated in response to the first vibration frequency, vibrate the one or more flow conduits (103) with at least a second vibration frequency and in the first out-of-phase bending mode, measure a second vibrational response, with the second vibrational response being generated in response to the second vibration frequency, and determine at least a mass flow rate and a viscosity using the first vibrational response and the second vibrational response.
1 Assignment
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Accused Products
Abstract
A Coriolis flow meter (5) is provided according to an embodiment of the invention. The meter (5) includes one or more flow conduits (103), at least two pickoff sensors (105, 105′) affixed to the one or more flow conduits (103), a driver (104) configured to vibrate the one or more flow conduits (103), and meter electronics (20) coupled to the at least two pickoff sensors (105, 105′) and to the driver (104). The meter electronics (20) vibrate the one or more flow conduits (103) of the flow meter (5) with a first vibration frequency and in a first out-of-phase bending mode, measure a first vibrational response, with the first vibrational response being generated in response to the first vibration frequency, vibrate the one or more flow conduits (103) with at least a second vibration frequency and in the first out-of-phase bending mode, measure a second vibrational response, and determine at least a mass flow rate and a viscosity using the first and second vibrational responses.
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Citations
37 Claims
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1. A Coriolis flow meter (5) comprising one or more flow conduits (103), at least two pickoff sensors (105, 105′
- ) affixed to the one or more flow conduits (103), and a driver (104) configured to vibrate the one or more flow conduits (103), with the Coriolis flow meter (5) being characterized by;
meter electronics (20) coupled to the at least two pickoff sensors (105, 105′
) and to the driver (104), with the meter electronics (20) being configured to vibrate the one or more flow conduits (103) of the flow meter with a first vibration frequency and in a first out-of-phase bending mode, measure a first vibrational response of the one or more flow conduits (103), with the first vibrational response being generated in response to the first vibration frequency, vibrate the one or more flow conduits (103) with at least a second vibration frequency and in the first out-of-phase bending mode, measure a second vibrational response, with the second vibrational response being generated in response to the second vibration frequency, and determine at least a mass flow rate and a viscosity using the first vibrational response and the second vibrational response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- ) affixed to the one or more flow conduits (103), and a driver (104) configured to vibrate the one or more flow conduits (103), with the Coriolis flow meter (5) being characterized by;
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14. A method for determining flow characteristics in a Coriolis flow meter, comprising vibrating one or more flow conduits of the flow meter with a first vibration frequency and in a first out-of-phase bending mode and measuring a first vibrational response of the one or more flow conduits, with the first vibrational response being generated in response to the first vibration frequency, with the method being characterized by:
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vibrating the one or more flow conduits with at least a second vibration frequency and in the first out-of-phase bending mode; measuring a second vibrational response, with the second vibrational response being generated in response to the second vibration frequency; and determining at least a mass flow rate and a viscosity of the flow medium using the first vibrational response and the second vibrational response. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A Coriolis flow meter software product for determining flow characteristics in a Coriolis flow meter, comprising a control software configured to direct a processing system to vibrate one or more flow conduits of the flow meter with a first vibration frequency and in a first out-of-phase bending mode, measure a first vibrational response of the one or more flow conduits, with the first vibrational response being generated in response to the first vibration frequency, and a storage system that stores the control software, with the software product being characterized by:
the control software being further configured to direct the processing system to vibrate the one or more flow conduits with at least a second vibration frequency and in the first out-of-phase bending mode, measure a second vibrational response, with the second vibrational response being generated in response to the second vibration frequency, and determine at least a mass flow rate and one or more flow characteristics using the first vibrational response and the second vibrational response. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
Specification