Measuring device, in particular a flow meter, with at least one ultrasonic transducer

    公开(公告)号:US11566929B2

    公开(公告)日:2023-01-31

    申请号:US17063786

    申请日:2020-10-06

    IPC分类号: G01F1/66 G01F1/667

    摘要: A measuring device has at least one ultrasonic transducer and an evaluator for evaluating a measurement signal provided by the at least one ultrasonic transducer. The evaluator is set up to determine a first comparison signal, by comparing the measurement signal with a first switching threshold, and a second comparison signal, by comparing the measurement signal with a second switching threshold which is different from the first switching threshold, and to determine a signal amplitude of the measurement signal depending on the first and second comparison signal.

    Method for evaluating measurement data sequences of an ultrasonic flow measuring device and ultrasonic flow measuring device

    公开(公告)号:US11340100B2

    公开(公告)日:2022-05-24

    申请号:US16660086

    申请日:2019-10-22

    IPC分类号: G01F1/66 G01F1/667

    摘要: A method for evaluating discrete measurement data sequences of an ultrasonic flow measuring device having a recording frequency and ultrasound signal, includes determining time position or height of a maximum of a sinusoidal profile of a time sequence of evaluation values, determined as part of a measurement data sequence or cross-correlation of two sequences recorded at different positions of the device by determining a maximum evaluation value of the time sequence and evaluation values thereof adjacent thereto. Initial values, including an initial maximum value and time, are determined by quadratic fit of evaluation values. Output values including output time describing the position or output height describing the height of the maximum are determined by a determination relationship setting output values in relation with initial values and a calculation quantity formed from selected evaluation values for known recording frequency and known signal frequency and based on a known sinusoidal profile.

    Method and measuring device for determining measurement information

    公开(公告)号:US10852171B2

    公开(公告)日:2020-12-01

    申请号:US16262993

    申请日:2019-01-31

    IPC分类号: G01F1/66

    摘要: A method for determining measurement information includes conducting waves excited by first oscillation transducers to second oscillation transducers or back to the first transducers and recording to determine measurement data. The measurement information is determined using first and second data or first data determine an excitation parameter of a second wave. The first transducers excite the second wave with polarities reversed relative to a polarity for excitation of a first wave, or subgroups of the first transducers operate differently to excite the first and second waves, and/or first and second subgroups of the first or second transducers are used for recording. Only measurement signals of the first subgroup are used, or measurement signals of first and second subgroups are added to record the first data. Only measurement signals of the second subgroup are used, or measurement signals of subgroups are subtracted, or vice versa, to record second data.

    FLUID METER, ENERGY STORAGE DEVICE FOR A FLUID METER, AND METHOD

    公开(公告)号:US20200288594A1

    公开(公告)日:2020-09-10

    申请号:US16808692

    申请日:2020-03-04

    发明人: MALTE BAER

    摘要: A fluid meter with an electronic unit has a housing in which an electronic device and an energy storage device are disposed. The electronic device and the energy storage device are potted separately with a potting compound in a respective potting housing and they are coupled with one another either via a cable connection or via an inductive energy transmission interface.

    METHOD FOR OPERATING A MEASURING DEVICE AND MEASURING DEVICE

    公开(公告)号:US20200166393A1

    公开(公告)日:2020-05-28

    申请号:US16689217

    申请日:2019-11-20

    IPC分类号: G01F1/66 G01N29/024 G01N29/22

    摘要: A measuring device, in particular a flow meter, has a measurement tube for receiving or conveying a fluid, first and second oscillation transducers on a side wall of the measurement tube, and a control device. An operating method has the control device drive the first oscillation transducer chronologically in succession for respective mode-selective excitation of a first and a second oscillation mode of a wave conducted in the side wall of the measurement tube. The second oscillation transducer is driven similarly for a second measurement direction. The excited waves are conducted directly in the side wall or indirectly through the fluid and recorded in the other oscillation transducer, resulting in measurement data for each measurement direction and oscillation mode. Result information relates to a property of the fluid or a state of the measuring device determined from the measurement data for both measurement directions and both respective oscillation modes.

    Ultrasonic flow meter having a main channel and at least one secondary channel

    公开(公告)号:US10527476B2

    公开(公告)日:2020-01-07

    申请号:US15851968

    申请日:2017-12-22

    IPC分类号: G01F1/66 G01F7/00 G01F1/58

    摘要: A flow meter has fluid flow through a measurement path in a measuring tube with a main channel and at least one secondary channel. A signal input device introduces a measurement input signal into the fluid and a signal detection device detects the measurement input signal and/or a response signal induced by the measurement input signal. For a predetermined fluid, the main and secondary channels with a first total throughput of the fluid per unit time and with a second total throughput of the fluid per unit time, which is greater than the first total throughput of the fluid per unit time. The ratio of the throughput through all the secondary channels to the throughput through the main channel is greater in the second total throughput than in the first total throughput of the fluid per unit time.