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公开(公告)号：EP3268954B1
公开(公告)日：2018-11-28
申请号：EP16704442.9
申请日：2016-02-15
CPC分类号： G10K11/04 , G10K1/066 , G10K1/08 , G10K11/002
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2.发明公开VERFAHREN ZUR ÜBERWACHUNG DES BETRIEBSZUSTANDES EINES ULTRASCHALLWANDLERS IN EINEM ULTRASCHALL-DURCHFLUSSMESSGERÄT 审中-公开程序用于监控的超声波换能器的工作状态在超声流量计
公开(公告)号：EP2847555A1
公开(公告)日：2015-03-18
申请号：EP13719295.1
申请日：2013-04-25
CPC分类号： G01F1/66 , G01F1/667 , G01F1/668 , G01F25/0007
摘要： The invention relates to a method for monitoring the operating state of a first ultrasonic transducer (3) in an ultrasonic flow measuring device (1) having at least one measurement pipe (2) and at least two ultrasonic transducers (3, 4), comprising the following steps: a) providing a first value or several first values, which first value relates to the geometric arrangement of the first ultrasonic transducer (3) in the measurement pipe (2) and/or to the geometric arrangement of the first ultrasonic transducer (3) relative to a second ultrasonic transducer (4), b) determining a second value or several second values for a flow velocity (ϑ) of a medium located in the measurement pipe (2), c) providing a third value and/or several third values for the temperature (T) and/or the pressure (p) of the medium located in the measurement pipe (2), d) simulating a target value of a signal strength (SS
Simulation ) while including the first, second, and/or third values, and e) comparing the simulated target value of a signal strength (SS
Simulation ) with a determined real value of the signal strength (SS
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3.发明公开
公开(公告)号：EP3338064A1
公开(公告)日：2018-06-27
申请号：EP16742317.7
申请日：2016-07-26
摘要： The invention relates to an ultrasonic transducer comprising an acoustic transformer comprising a transformer body with a hollow chamber, said hollow chamber being closed to the medium having a membrane freely oscillating in the center. The invention also relates to a method for producing an acoustic transformer of this type.
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公开(公告)号：EP3268954A1
公开(公告)日：2018-01-17
申请号：EP16704442.9
申请日：2016-02-15
CPC分类号： G10K11/04 , G10K1/066 , G10K1/08 , G10K11/002
摘要： Disclosed is an arrangement comprising an ultrasonic transducer and a damping element with a longitudinal axis L, which damping element connects the ultrasonic transducer to a housing or measuring tube wall, wherein the transducer has an attachment comprising a surface in contact with a medium, from which surface ultrasonic signals are emitted into a gaseous or liquid medium, and the damping element has at least two annular grooves and an annular mass segment arranged therebetween. The invention is characterised in that the damping element has a first characteristic frequency f
a at which the annular mass segment performs an axial movement parallel to the longitudinal direction of the damping element, wherein this first characteristic frequency is the highest characteristic frequency in the event that there are a plurality of characteristic frequencies at which the annular mass segment performs an axial movement parallel to the longitudinal direction of the damping element, and in that the damping element has a second characteristic frequency f
r , at which the annular mass segment performs a rotational movement, wherein this second characteristic frequency is the lowest characteristic frequency in the event that there are a plurality of characteristic frequencies at which the annular mass segment performs an axial movement parallel to the longitudinal direction of the damping element, and wherein the ratio of the first characteristic frequency f
a to the second characteristic frequency f
r is less than 0.75. Also disclosed is a field device for process measurement technology.-
公开(公告)号：EP2999947A1
公开(公告)日：2016-03-30
申请号：EP14720947.2
申请日：2014-04-25
CPC分类号： G10K11/004 , G01F1/662 , G01F15/18 , G01N29/222 , G01N29/223
摘要： Disclosed is an ultrasonic transducer mounting assembly comprising an ultrasonic transducer element (2), a transducer housing (2) inside which the ultrasonic transducer element (2) is arranged, and an accommodation unit (4; 304; 404; 604) inside which the transducer housing (3) is clamped in a clamping section. The disclosed assembly is characterized in that the clamping section comprises at least one antifriction bearing that has at least one rolling element, in particular at least one ball bearing (6) that has at least one ball (7), for acoustically decoupling the transducer housing (3) from the accommodation unit (4; 304; 404; 604).
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7.发明公开
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公开(公告)号：EP2999947B1
公开(公告)日：2018-11-28
申请号：EP14720947.2
申请日：2014-04-25
CPC分类号： G10K11/004 , G01F1/662 , G01F15/18 , G01N29/222 , G01N29/223
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公开(公告)号：EP2739943A1
公开(公告)日：2014-06-11
申请号：EP12740565.2
申请日：2012-07-23
IPC分类号： G01F1/66
摘要： A method for determining the flow rate of a fluid, which is a gas mixture, wherein at least one component of the gas mixture is a hydrocarbon, through a circular cylindrical measuring tube with a straight measuring tube longitudinal axis and an internal diameter D
I , characterized by the following method steps: determining a first average flow velocity v
L by measuring the propagation time difference of acoustic signals along a signal path; determining a modified Reynolds number Re
mod according to the formula Re
mod = (v
L *D
I )/v
kin , wherein v
kin , the kinematic viscosity of the fluid, is known; determining a second average flow velocity v
A using a known function v
A = f(Re
mod ) on the basis of the modified Reynolds number Re
mod , wherein the method step of determining the modified Reynolds number Re
mod is preceded by the method step of determining the kinematic viscosity v
kin of the fluid.-
10.发明公开
公开(公告)号：EP4264194A1
公开(公告)日：2023-10-25
申请号：EP21840843.3
申请日：2021-12-17
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