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公开(公告)号：US20210010838A1
公开(公告)日：2021-01-14
申请号：US16976605
申请日：2019-02-18
申请人： ABB SCHWEIZ AG
发明人： Subhashish DASGUPTA , Simon DRAPER , Graham WATSON
摘要： The present invention relates to an electromagnetic flowmeter. The present invention provides an electromagnetic flowmeter for measuring flow of fluid flowing in a conduit of the electromagnetic flowmeter, wherein the electromagnetic flowmeter comprises: a pair of electrodes mounted on the conduit for measuring potential difference generated by the interaction of electromagnetic field in the fluid to determine the flow of fluid in the electromagnetic flowmeter; a processing unit, wherein the processing unit acquires signals from the pair of electrodes and processes the signal for measurement, a set of coils comprising at least two coils mounted on a surface of the conduit and excited by an excitation unit for generating an electromagnetic field, wherein a first coil from the set of coils is concentrically positioned with a second coil from the set of coil, and the second coil is placed within the enclosed surface area of the first coil.
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公开(公告)号：US20200173836A1
公开(公告)日：2020-06-04
申请号：US16612267
申请日：2017-08-07
申请人： ABB Schweiz AG
发明人： Subhashish DASGUPTA
摘要： The present invention relates to a method of configuring an electromagnetic flowmeter and an electromagnetic flowmeter thereof. The method comprises: obtaining a first correlation factor between flow rate of fluid and potential for a calibrated condition of the electromagnetic flowmeter using a model; obtaining a second correlation factor between flow rate of fluid and potential for conditions of a site in which the electromagnetic flowmeter is installed using the model; comparing the first correlation factor and the second correlation factor to determine a difference in value and adopting the value of the second correlation factor for configuring the electromagnetic flowmeter if the difference in value exceeds a pre-set threshold.
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公开(公告)号：US20210396558A1
公开(公告)日：2021-12-23
申请号：US17289628
申请日：2019-10-25
申请人： ABB Schweiz AG
发明人： Subhashish DASGUPTA
摘要： The present invention relates to a An electromagnetic flowmeter for measuring flow of fluid flowing in a conduit of the electromagnetic flowmeter, wherein the electromagnetic flowmeter comprises: a coil attached to an inner surface of the conduit; a movable magnetic ring having segments of magnetic materials that is magnetically coupled with the coil to generate an electromagnetic field to interact with the fluid flowing through the conduit wherein the conduit is provided with an insulating liner. A pair of electrodes mounted on the conduit for measuring potential difference generated by the interaction of the electromagnetic field in the fluid. Wherein the segments of magnetic materials are having varying magnetic properties arranged to have an orderly varying electromagnetic field in the conduit adjustable by rotating the movable magnetic ring. The movable magnetic ring is positioned between the at least one coil and the insulating liner.
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公开(公告)号：US20210396556A1
公开(公告)日：2021-12-23
申请号：US17289639
申请日：2019-10-28
申请人： ABB Schweiz AG
发明人： Subhashish DASGUPTA
摘要： The present invention relates to a an electromagnetic flowmeter for measuring flow of fluid flowing in a conduit of the electromagnetic flowmeter, wherein the electromagnetic flowmeter comprises: a coil attached to the conduit and excited by an excitation unit to generate an electromagnetic field to interact with the fluid flowing in the conduit, a shield magnetically coupled with the coil, a pair of electrodes mounted on the conduit for measuring potential difference generated by the interaction of the electromagnetic field in the fluid; and wherein the at least one coil and the at least one shield is provided with an arrangement to displace the at least one of the at least one coil and the at least one shield to adjust the interaction of the electromagnetic field with the fluid.
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公开(公告)号：US20210181005A1
公开(公告)日：2021-06-17
申请号：US16758909
申请日：2018-10-03
申请人： ABB Schweiz AG
IPC分类号： G01F15/02
摘要： The present invention relates to a flowmeter for monitoring physical parameters of fluid passing through the flowmeter. The flowmeter being installed in a plant and communicatively connected through a gateway device to a server having a virtual model. The flowmeter comprising: a processing unit for computing a first processed data of a physical parameter associated with the fluid measured by the flowmeter. The flowmeter receives a second processed data from the server having the virtual model, wherein the virtual model provides the second processed data by computing the second processed data based on the first processed data and data from at least one sensor provisioned in the plant. The present invention also provides for a system for monitoring physical parameters of fluid passing through a pipe in a plant with the flowmeter.
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公开(公告)号：US20210055144A1
公开(公告)日：2021-02-25
申请号：US16957868
申请日：2018-12-19
申请人： ABB Schweiz AG
摘要： The present invention provides for a method for operating an electromagnetic flowmeter capable of being mounted on to a surface of a flow pipe for measuring a flow of fluid flowing in the flow pipe. The method comprising: exciting the coil to have electromagnetic interaction with the fluid in the flow pipe resulting in leakage current; providing a current to compensate for the resulting leakage current in the flow pipe by applying a potential difference to electrodes that are attached to a housing of the electromagnetic flowmeter and in contact with the flow pipe; detecting a condition wherein the resulting current flowing is within a threshold range; and determining a measure of flow in the flow pipe based on a value of the applied potential difference.
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