Method for ascertaining a characteristic variable for evaluating a measuring arrangement comprising a clamp-on, ultrasonic, flow measuring device and a pipe and/or for evaluating measurement operation of such a measuring arrangement
First Claim
1. A method for ascertaining a characteristic variable for evaluating a measuring arrangement comprising:
- a clamp-on, ultrasonic, flow measuring device; and
a pipe, on which the clamp-on, ultrasonic, flow measuring device is secured, and/or for evaluating measurement operation of such a measuring arrangement, the method comprising the steps as follows;
A providing characteristic values relative to an exciter signal produced by the clamp-on, ultrasonic, flow measuring device;
B providing sensor-specific data as regards acoustic properties of one or more ultrasonic transducers of the clamp-on, ultrasonic, flow measuring device;
C inputting data relative to pipe material and pipe wall thickness;
D ascertaining the characteristic variable from the parameters and data of steps A-C based on a mathematical model, comprising the steps of I) calculating a system response based on the mathematical model, and II) evaluating automatically the system response to determine the characteristic variable, wherein the ascertained characteristic variable is an angle, with which the sound mainly propagates through the fluid located in the pipe; and
E initiating a failure detection based on the characteristic variable, in the case of which the data of the steps (A-C) are checked for compatibility.
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Accused Products
Abstract
A method for ascertaining a characteristic variable for evaluating a measuring arrangement comprising a clamp-on, ultrasonic, flow measuring device and a pipe, on which the clamp-on, ultrasonic, flow measuring device is secured, and/or for evaluating measurement operation of such a measuring arrangement, characterized by the method steps as follows: A) providing characteristic values relative to an exciter signal produced by the clamp-on, ultrasonic, flow measuring device; B) providing sensor-specific data as regards acoustic properties of one or more ultrasonic transducers of the clamp-on, ultrasonic, flow measuring device C) inputting data relative to the pipe material and the pipe wall thickness, especially inputting such data by a user, and D) ascertaining the characteristic variable from the parameters and data of steps A-C based on a mathematical model, as well as a computer program product and a clamp-on, ultrasonic, flow measuring device.
5 Citations
12 Claims
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1. A method for ascertaining a characteristic variable for evaluating a measuring arrangement comprising:
- a clamp-on, ultrasonic, flow measuring device; and
a pipe, on which the clamp-on, ultrasonic, flow measuring device is secured, and/or for evaluating measurement operation of such a measuring arrangement, the method comprising the steps as follows;A providing characteristic values relative to an exciter signal produced by the clamp-on, ultrasonic, flow measuring device; B providing sensor-specific data as regards acoustic properties of one or more ultrasonic transducers of the clamp-on, ultrasonic, flow measuring device; C inputting data relative to pipe material and pipe wall thickness; D ascertaining the characteristic variable from the parameters and data of steps A-C based on a mathematical model, comprising the steps of I) calculating a system response based on the mathematical model, and II) evaluating automatically the system response to determine the characteristic variable, wherein the ascertained characteristic variable is an angle, with which the sound mainly propagates through the fluid located in the pipe; and E initiating a failure detection based on the characteristic variable, in the case of which the data of the steps (A-C) are checked for compatibility. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a clamp-on, ultrasonic, flow measuring device; and
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10. A computer program product, with which the following method steps:
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A providing characteristic values relative to an exciter signal produced by the clamp-on, ultrasonic, flow measuring device; B providing sensor-specific data as regards acoustic properties of one or more ultrasonic transducers of the clamp-on, ultrasonic, flow measuring device; C inputting data relative to pipe material and pipe wall thickness; D ascertaining the characteristic variable from the parameters and data of steps A-C based on a mathematical model are executed, comprising the steps of;
I) calculating a systenmm response based on the mathematical model; and
II) evaluating automatically the system response to determine the characteristic variable, wherein the ascertained characteristic variable is an angle, with which the sound mainly propagates through the fluid located in the pipe; andE initiating a failure detection based on the characteristic variable, in the case of which the data of the steps (A-C) are checked for compatibility, wherein; the computer program product is based on the mathematical model; and with application of the characteristic values and data of the steps A-C and, in given cases, a step X is provided which provides information relative to the construction of the measuring point and taken into consideration by the mathematical model in the case of ascertaining the measurement error factor, and, ascertains a measurement error factor, which is suitable for failure diagnosis.
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11. A clamp-on, ultrasonic, flow measuring device, comprising:
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at least two ultrasonic transducers secured outwardly on a pipeline; and an evaluation unit, which is designed for performing the following method steps; A providing characteristic values relative to an exciter signal produced by the clamp-on, ultrasonic, flow measuring device; B providing sensor-specific data as regards acoustic properties of one or more ultrasonic transducers of the clamp-on, ultrasonic, flow measuring device; C inputting data relative to pipe material and pipe wall thickness; D ascertaining the characteristic variable from the parameters and data of steps A-C based on a mathematical model, comprising the steps of I) calculating a system response based on the mathematical model, and II) evaluating automatically the system response to determine the characteristic variable, wherein the ascertained characteristic variable is an angle, with which the sound mainly propagates through the fluid located in the pipe; and
which performs a correction of measurement error in real time based on the ascertained measurement error factor; andE initiating a failure detection based on the characteristic variable, in the case of which the data of the steps (A-C) are checked for compatibility. - View Dependent Claims (12)
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Specification