Vibratory flow meter with multichannel flow tube

    公开(公告)号:US11486750B2

    公开(公告)日:2022-11-01

    申请号:US16783625

    申请日:2020-02-06

    Abstract: Vibratory meters (5), and methods for their use measuring a fluid are provided. Each vibratory meter includes a multichannel flow tube (300) comprising two or more fluid channels (302), a pickoff (170), a driver (180), and meter electronics (20) configured to apply a drive signal to the driver at a drive frequency ω, and measure a deflection of the multichannel flow tube with the pickoff. In examples, at least one fluid channel has an effective diameter that is related to velocity of sound and drive velocity. In further examples, the driver may apply a drive signal to the driver having a drive frequency proportional to the velocity of sound and effective diameter.

    Vibratory flowmeter and methods and diagnostics for meter verification

    公开(公告)号:US11473961B2

    公开(公告)日:2022-10-18

    申请号:US17106844

    申请日:2020-11-30

    Abstract: A vibratory flowmeter (5) for meter verification is provided, including meter electronics (20) coupled to the first and second pickoff sensors (170L, 170R) and coupled to a driver (180), with the meter electronics (20) configured to: vibrate the flowmeter assembly (10) in a single mode using the driver (180), determine a single mode current (230) of the driver (180) and determine first and second response voltages (231) generated by the first and second pickoff sensors (170L, 170R), respectively, compute frequency response functions for the determined first and second response voltages (231) from the determined single mode current (230), fit the generated frequency response functions to a pole-residue model, and verify proper operation of the vibratory flowmeter (5) using the meter stiffness value (216), residual flexibility (218), and the meter mass (240) in embodiments.

    DETERMINING A VAPOR PRESSURE USING A VAPOR PRESSURE METER FACTOR

    公开(公告)号:US20220146295A1

    公开(公告)日:2022-05-12

    申请号:US17440455

    申请日:2019-04-03

    Abstract: A meter electronics (20) for determining a vapor pressure using a vapor pressure meter factor is provided. The meter electronics (20) comprises a processing system (200) communicatively coupled to a meter assembly (10). The processing system (200) is configured to provide a drive signal to the meter assembly (10) having a fluid, measure a drive gain of the drive signal provided to the meter assembly (10), and determine the vapor pressure of the fluid based on a previously determined relationship between the drive gain and a reference gas-liquid ratio.

    Communicating with two or more hosts

    公开(公告)号:US11221247B2

    公开(公告)日:2022-01-11

    申请号:US16077944

    申请日:2016-02-26

    Inventor: Kai Shen

    Abstract: A method of communicating with two or more hosts is provided. The method includes transmitting a first communication between a first host and a meter electronics and transmitting a second communication between a second host and the meter electronics.

    Continuously adaptive digital coil driver for magnetic flowmeter

    公开(公告)号:US11204267B2

    公开(公告)日:2021-12-21

    申请号:US16587615

    申请日:2019-09-30

    Inventor: Masoud Ameri

    Abstract: A magnetic flowmeter for measuring a fluid flow includes flow tube assembly receiving the flow having a coil with first and second coil wires for receiving a coil current to produce a magnetic field in the fluid. This generates an EMF in the fluid representative of the flow. An EMF sensor is arranged to sense the EMF and generate an output related to the flow rate. Current supply circuitry provides the coil current to the first and second wires of the coil in response to a command signal. A digital control circuit provides the command signal to the current supply circuitry as a function of a control algorithm. In one aspect, the control algorithm is adapted to changes in electrical parameters of the coil. A method of implementing the magnetic flowmeter is also provided.

    ELECTROMAGNETIC INTERFERENCE RESISTANT ELECTRONICS ENCLOSURE

    公开(公告)号:US20210381873A1

    公开(公告)日:2021-12-09

    申请号:US17265966

    申请日:2018-08-16

    Abstract: An EMI resistant electronics enclosure (200) is provided having a first compartment (206) and a second compartment (207), each defined by a body (205), being separated by a septum (208). A first aperture (209) in the septum (208) connects the first compartment (206) and the second compartment (207). A feed-through element (210) is provided having a first interface region (211) and a second interface region (212), wherein one or more primary conductors (217) extend between the first interface region (211) and the second interface region (212), and wherein the first interface region (211) resides in the first compartment (206), and the second interface region (212) resides in the second compartment (207). A conductive bar (232) circumscribes at least a portion of the feed-through element (210), and a conductive gasket (220) extends from the body (205) to the conductive bar (232), wherein a ground path is formed between the body (205) and the conductive bar (232) with the conductive gasket (220).

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