WO2008061551A1 - Procédé de diagnostic d'un engorgement d'une ligne d'impulsions pour un transducteur de mesure de pression, et transducteur de mesure de pression - Google Patents

Procédé de diagnostic d'un engorgement d'une ligne d'impulsions pour un transducteur de mesure de pression, et transducteur de mesure de pression Download PDF

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Publication number
WO2008061551A1
WO2008061551A1 PCT/EP2006/011255 EP2006011255W WO2008061551A1 WO 2008061551 A1 WO2008061551 A1 WO 2008061551A1 EP 2006011255 W EP2006011255 W EP 2006011255W WO 2008061551 A1 WO2008061551 A1 WO 2008061551A1
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WO
WIPO (PCT)
Prior art keywords
measurement signal
pressure
low
frequency
signal
Prior art date
Application number
PCT/EP2006/011255
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German (de)
English (en)
Inventor
Wolfgnag Ens
Christoph Paulitsch
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2006/011255 priority Critical patent/WO2008061551A1/fr
Publication of WO2008061551A1 publication Critical patent/WO2008061551A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/3209—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/3209—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
    • G01F1/3218—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices bluff body design
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/363—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction with electrical or electro-mechanical indication

Definitions

  • the invention relates to a method for the diagnosis of a Ver ⁇ stuffing of a pulse line in a (pressure) transducer and a (pressure) transducer, which is prepared for the execution of the method and provided.
  • Transmitters of the above type are known per se and in particular for measuring pressure changes at a discontinuity, z. B. a so-called orifice, provided in a liquid or a gas (fluid) flowed through line. Such pressure changes are detected via pressure differences arising at the metering orifice. On the basis of such a differential pressure measurement and a flow measurement is possible.
  • the pressure transmitter comprises a (differential) pressure sensor, which is coupled via so-called impulse or differential pressure lines to an area before and after the point of discontinuity as a sensorically effective element.
  • a coupling may diminish over time, e.g. For example, by clogging one or both impulse lines (clogging, fouling).
  • a decreasing coupling can be detected under certain circumstances on measurement signals recorded by the pressure sensor.
  • a method and a corresponding device for the diagnosis of a pulse line - ie in particular a detection of clogging of one or more impulse lines and / or detection of deposits on the orifice or acting as an interface between the impulse lines and the pressure transducer membrane and / or
  • it relates to a method and a corresponding device for analyzing a characteristic value with regard to a deviation from or a correspondence with at least one predetermined or predefinable reference value.
  • a declining or disturbed coupling is so far z.
  • WO 97 36215 From WO 97 36215 it is known to determine a statistical parameter of a digitized measurement signal by means of predetermined rules, fuzzy logic or neural networks and then to apply a fuzzy membership function to the statistical parameter. It is further known from US Pat. No. 6,654,697 to determine a difference between a digitized measurement signal and the ascertained mean value by means of a moving-average algorithm. From this difference, diagnostic data are then determined taking into account current and historical data, wherein in a training mode from the current and historical data, a trained record is calculated. From US 6,539,267 is finally known, by means of an algorithm 'a statistical parameters, such. Variance or rate of change, and to generate a trained value by a microprocessor by monitoring the statistical parameter during normal operation. For different framework conditions, the trained parameter can be adapted dynamically.
  • An object of the invention is to improve the detection of blockages and the like of the pulse pressure lines or in the area of the pulse pressure lines.
  • a pressure sensor encompassed by the pressure transducer is a measurement signal provided with respect to a pressure in the high or low pressure pulse line or a difference thereof, provided that the measurement signal supplied by the pressure sensor is influenced by a provided in the diaphragm bluff body and that the measurement signal at least with respect to a contribution to the measurement signal by the bluff body is evaluated.
  • a device having the features of claim 8.
  • the at least with a high pressure and a low pressure pulse line to a line in a range before and after a point of discontinuity, in particular a diaphragm is connected or connectable and which is determined by means of a pressure transducer included pressure sensor for outputting a measurement signal with respect to a pressure in the high or low pressure pulse line or a difference thereof, provided that of the pressure sensor during operation, the measurement signal available is influenced by a bluff body provided in the region of the diaphragm and that the measurement signal can be evaluated by the bluff body at least also with respect to a contribution to the measurement signal.
  • the measurement signal is "evaluated at least in relation to a contribution to the measurement signal through the bluff body" or a multiple evaluation of the measurement signal is possible, namely on the one hand according to one or more known in the art variants and on the other hand, at least The additional evaluation increases the quality of the detection of a sensor error, eg due to clogging of the impulse lines, membrane abrasion, membrane deposits or the like
  • the bluff body leads to an additional, characteristic, higher-frequency signal component in the measurement signal is an evaluation of the measurement signal "at least also with respect to a contribution to the measurement signal by the bluff body" in particular possible that higher-frequency signal components of the measurement signal are evaluated.
  • Relationships used in subclaims indicate the further development of the subject of the main claim by the features of the respective subclaim; they should not be construed as a waiver of obtaining independent, objective protection for the feature combinations of the dependent claims. Furthermore, with a view to an interpretation of the claims in a closer concretization of a feature in a subordinate claim, it is to be assumed that such a restriction does not exist in the respective preceding claims.
  • a higher-frequency component of the measurement signal referred to hereinafter as the vortex shedding frequency or range around a vortex shedding frequency, is evaluated by comparison with a reference value generated from the measurement signal or a predetermined or predefinable reference value and depending on the result of the comparison, a predetermined or predefinable action is triggered.
  • the expected ⁇ te value is specified by the reference value, a quali ⁇ fied evaluating the higher-frequency component of the Messsig- is Nals with regard to a diagnosis possible.
  • a low-frequency component of the measurement signal is evaluated separately from a higher-frequency component of the measurement signal resulting as contribution by the bluff body.
  • a simultaneous or at least independent evaluation of a low- and a higher-frequency component of the measurement signal takes place.
  • a characteristic value is determined by means of the analysis device for the low-frequency component and the higher-frequency component of the measurement signal, and either each characteristic value or a difference between the two characteristic values is compared with a predetermined or specifiable reference value and a predetermined one depending on the result of the comparison or predeterminable action is triggered.
  • both the low-frequency and the low-frequency component are evaluated here the higher-frequency portion of the measurement signal is taken into account, wherein a characteristic value is formed for each examined portion of the measurement signal and either each characteristic value or a difference between the two characteristic values is compared with a predetermined or predefinable reference value.
  • a predetermined or predefinable action for. B. ei ⁇ ne optical or acoustic display that represents the result of the comparison triggered.
  • a flow calculation with determination of a flow value is carried out by means of the analysis device with respect to the measurement signal.
  • the higher frequency position which can be determined with a spinal cord diagnosis, becomes
  • Vortex frequency used on the other hand, a differential pressure diagnosis.
  • the determined flow value or the difference of the flow values is then compared with a predetermined or predefinable reference value.
  • a predetermined or predefinable reference value Depending on the result of the comparison with respect to the flow value, then, in a quasi-downstream examination, either the higher-frequency component of the measuring signal, as described above for explaining the originally filed claim 2, the low-frequency component alone, or the low-frequency and the high-frequency Proportion of the measurement signal, as described above for explaining the originally filed claim 3, evaluated.
  • the embodiment of the method thus provides, in particular, for a flow calculation to be carried out initially and for one or more flow values determined or deviating from an expected value represented by the reference value to deviate or deviate from a predefined threshold value as determined by the reference value, as it were to control the flow calculation nor the measurement signal influenced by the bluff body is used, either by evaluating only the higher-frequency portion of the measurement signal, and thus essentially on the contribution limited by the bluff body, or only the low-frequency ⁇ th portion of the measurement signal, which is influenced by the low body of the bluff body, or by evaluating the low- and the höufherfrequenten portion of the measurement signal, so that quasi a threefold review results.
  • the flow calculation is only performed by Auswer ⁇ processing of the differential pressure.
  • To check is then checked whether the vortex shedding generated by the bluff body is present in the measurement signal at the expected by the predetermined flow rate frequency.
  • the method described above and explained further below is preferably implemented as software, so that the invention also relates to a computer program with computer-executable program code instructions for implementing the method outlined above or explained below and a computer program product, in particular a storage medium or the like, having such a computer program applies.
  • the already mentioned analysis device is provided, which in particular is an analysis device with a computer program of the type described above.
  • the latter comprises a diagnostic parameter calculation unit provided with a predetermined or predefinable reference value for determining a diagnostic characteristic value with respect to the measurement signal and comparing the result of the comparison to the activation of the evaluation either the higher-frequency, the low-frequency or the low-frequency and the higher-frequency portion of the measurement signal switching means provided (which can also be implemented by a computer program) can be controlled.
  • a diagnostic parameter calculation unit provided with a predetermined or predefinable reference value for determining a diagnostic characteristic value with respect to the measurement signal and comparing the result of the comparison to the activation of the evaluation either the higher-frequency, the low-frequency or the low-frequency and the higher-frequency portion of the measurement signal switching means provided (which can also be implemented by a computer program) can be controlled.
  • the analysis device comprised thereof, the check of the pressure transducer, if the diagnosed characteristic value determined in the diagnosis characteristic calculation deviates from the expected value by more than a predetermined or predefinable threshold, also automatically triggered by the above-mentioned switching means driven depending on the result of the comparison of the diagnosis characteristic be or are ⁇ controllable.
  • the respective switching means is either the evaluation of the higher-frequency component of the measurement signal or the low-frequency component of the measurement signal or the evaluation of the low and the higher-frequency component of the measurement signal and possibly triggering ei ⁇ ner action with regard to these downstream evaluation ak ⁇ tivated.
  • the pressure transducer comprises a display unit which is capable of displaying a result of the evaluation of the measurement signal either with respect to the contribution to the measurement signal by the baffle body and / or to display a result of the evaluation of the higher-frequency component of the measurement signal. or is determined and prepared for displaying a result of the separate evaluation of the low and higher frequency portion of the measurement signal.
  • the baffle body present in the region of the diaphragm leads to a change in the spectrum of the measurement signal, in particular in the higher-frequency range of the measurement signal.
  • Frequency although no absolute flow value is available, but at least one diagnostic information that is evaluable with respect to a detection of the blockage of individual or multiple pulse lines.
  • the analysis device continuously checks the blockage of the differential pressure lines by analyzing low-frequency signal components of the measurement signal.
  • Parallel or intermittent can be on the basis of the measurement signal
  • Flow value can be calculated by means of a preferably also included by the analysis device flow calculation unit. If a blockage is detected, which is detected either during the analysis of the low-frequency signal components of the measurement signal or if the flow value deviates from an expected value or also on the operator's request, the higher-frequency signal component of the measurement signal is evaluated to check the blockage.
  • This is z. For example, the power density in a certain frequency range of the higher-frequency signal component is examined. In short, this additional analysis particularly examines the effect of vortex shedding. Due to the majority of the evaluation and diagnostic criteria, their mutual monitoring in the sense of a plausibility check and a calibration are possible.
  • z. B provided according to a further aspect of the invention that the amplitude of the higher-frequency signal component during a "good phase", so if there is no evidence of constipation due to the remaining diagnostic criteria, is learned and tracked in the evaluation of the low-frequency signal components.
  • a simple bluff body not only causes different, higher-frequency signal components depending on the gas content of the fluid, but generally increases the noise component in the entire frequency range by additional separation of the fluid and turbulence at the diaphragm.
  • This noise component depends on the degree of clogging of the Transfer pulse lines of varying strength to the differential pressure transducer, so that a bluff body according to the findings of the invention for detecting the clogging of impulse lines is used.
  • the increased low-frequency noise is to influence the measuring signal through the ram body within the meaning of the above, to the originally filed claim 1 and further into the ⁇ sem sense the blockage detection by means of algorithms relating to such elevated by the bluff body low-
  • An evaluation of the measuring signal "at least also with respect to a contribution to the measuring signal by the bluff body.” The result of such an examination can, if necessary, checked by a detailed analysis of higher-frequency signal components that are characteristic of the bluff body, and thus the reliability of the detection can be increased.
  • a flow vortex sensor which also functions as a bluff body in the sense of the present invention, can be used.
  • a flow vortex sensor which also functions as a bluff body in the sense of the present invention.
  • an advantage of the approach according to the invention results from the fact that a known vortex sensor requires additional electronics as well as a calibration in order to make the vortex body signal usable for the flow measurement but not the invention.
  • the bluff body or the vertebral body used as a bluff body is not continuously used as a vortex sensor, but only for sensor diagnosis, ie to improve the quality of a detection of a blockage of Wirktik- lines or membrane defects.
  • the evaluation with respect to the bluff body is also required only temporarily and according to a preferred embodiment, activated either automatically or manually.
  • the analysis device need not be designed for the use of two types of sensors simultaneously, so that the same analysis device can be used to determine all diagnostic criteria.
  • an inadequate vortex frequency amplitude can also be used to check the obstruction detection by analyzing the low-frequency noise.
  • 1 shows a pressure transmitter according to the invention
  • 2 shows an alternative embodiment of a pressure transmitter according to the invention
  • FIG. 3 shows a further alternative embodiment of a pressure transmitter according to the invention
  • FIG. 4 shows a schematically simplified representation of a bluff body in a line.
  • FIG. 1 shows, in a schematically simplified illustration, a line 12 through which a fluid 10 flows as an arrow with a point of discontinuity in the form of a so-called (measuring) orifice 14.
  • a differential pressure transducer 20 is coupled to the line 12.
  • This gives as a measuring signal 22 from a differential pressure measuring signal, which in an analysis device 24, the z. B. in the form of evaluation electronics, first by a preprocessing 26 a preprocessing, ie z. As a filtering and / or digitizing or the like is subjected. After preprocessing, the measuring signal 22 is transferred to a signal memory 28.
  • first and a second evaluation unit 30, 32 provided within the analysis device 24.
  • the functionality of the first evaluation unit 30 can also be described as constipation detection on the basis of the effective pressure ratios.
  • the first evaluation unit 30 and / or its functionality are also referred to by the abbreviation "differential pressure diagnosis.”
  • the second evaluation unit 32 is provided for evaluating a higher-frequency component of the measurement signal 22, wherein the higher-frequency Proportion of the measuring signal 22 is influenced by a provided in the region of the diaphragm 14 bluff body 34.
  • the measuring signal 22 is also evaluated by the bluff body 34 with respect to a contribution to the measuring signal 22.
  • ⁇ already designation described is according to the second evaluation unit 32 and / or referred their functionality bearing the symbol "vortex sensor diagnostics".
  • the noise component in the entire frequency range of the measurement signal 22 also carried out by the first evaluation unit evaluation of the low-frequency component of the measurement signal 22 also refers to a Evaluation of the measuring signal 22 at least also with respect to a contribution to the measuring signal 22 by the bluff body 34.
  • a characteristic value is respectively determined for the low-frequency component and the higher-frequency component of the measurement signal 22. Subsequently, either each characteristic value or a difference between the two characteristic values is compared with a predetermined or predefinable reference value.
  • a comparator 36 connected downstream of the evaluation units 30, 32 is provided which also (not shown) comprises a memory for the reference value or has access to a memory area in which the reference value is stored.
  • a predetermined or predefinable action is triggered, z. B. by an optical or acoustic display unit 38 is driven.
  • FIG. 1 The entirety of the units shown in FIG. 1 without the line 12 along their entire longitudinal extension and without the differential pressure lines 16 and 18 is also referred to as a pressure transmitter 40.
  • 2 shows a further embodiment of the pressure transducer 40 of Figure 1, wherein is not subsequently received again in connection with the loading ⁇ scription of FIG.1 explained units.
  • the pressure sensor can ⁇ 20 now provide as a measurement signal 22 is not only a differential pressure measuring signal but also an absolute pressure measurement signal 42nd Differential pressure measuring signal and absolute pressure measuring signal 42 are still, unless otherwise stated explicitly, summarized under the generic term measuring signal 22.
  • a diagnostic characteristic calculating unit 44 also referred to as "flow rate calculating unit differential pressure” is shown in FIG the signal memory 28 in order to carry out a flow calculation based on the measurement signal 22, in particular on the basis of the differential pressure measurement signal comprised by the measurement signal 22.
  • a flow value 46 is supplied directly or indirectly to the display unit 38.
  • the blockage detection can be activated in accordance with the approach according to the invention, ie the functionality already implemented in the Connection with FIG 1 has been explained, be retrieved.
  • switching means 48, 50 shown as switches are provided in the schematically simplified representation, which are either manually by a user - after evaluation of the presented via the display unit 38 flow value or diagnostic characteristic - or automatically - after comparison
  • each functionality implemented by the evaluation units 30, 32 can be retrieved individually, ie the measurement signal 22 can be analyzed with respect to the low-frequency or higher-frequency signal component.
  • the result of evaluation is an indication in respect of any possible clogging in the rich Be ⁇ the impulse lines 16, 18 or in the region of the aperture 14 or a Membranabrasion or the like.
  • the flow signal 46 can be checked for plausibility. If both switching means 48, 50 are activated at the same time, it is preferably provided that the characteristic value determined by both evaluation units 30, 32 with respect to the lower or higher-frequency signal component of the measurement signal is compared with a predetermined or predefinable reference value after the difference between the two characteristic values has been formed , wherein the comparison with the reference value represents the diagnostic criterion with regard to a present or non-existing blockage and is forwarded to the display unit 38.
  • the backward-pointing arrows starting from the reference 36 to each evaluation unit 30, 32 show that mutual monitoring of the diagnostic features and / or calibration within the analysis device 24 is possible and provided in the manner described.
  • FIG. 3 shows a further alternative embodiment of the invention
  • the diagnostic parameter calculation unit 44 already explained in connection with FIG 2 is combined with a further diagnostic parameter calculation unit 45, also referred to as "flow calculation unit vortex sensor.”
  • a further diagnostic parameter calculation unit 45 also referred to as "flow calculation unit vortex sensor.”
  • the diagnostic parameter value calculation unit 44 a flow rate calculation based on the differential pressure is performed. leads.
  • the further Diagnosekennwertbeticianstechnik 45 an analysis of the Wirbelablinatefrequenz in relation to their location in an expected, ie predetermined or predetermined range, performed. All other elements correspond to the elements already explained in connection with FIG. 1 and will not be described again here.
  • FIG. 4 shows, in a sectional view of the line 12, a schematically simplified representation of a bluff body 34, as shown in the FIG
  • the bluff body 34 is arranged in the region of the metering orifice 14.
  • the bluff body 34 has a basic shape in the manner of a prism, wherein base is directed against the flow direction of the fluid 10 in the conduit 12.
  • Other geometries and / or orientations of a bluff body are readily conceivable.
  • a method for operating a pressure transducer 40 and such a pressure transducer 40 is given, which at least with a high pressure and a low pressure pulse line 16, 18 to a line 12 in the area before and after a point of discontinuity , in particular a diaphragm 14, wherein a pressure sensor 20 encompassed by the pressure transducer 40 provides a measuring signal 22 with respect to a pressure in the high or low pressure pulse line 16, 18 or a difference thereof, in which the measuring signal 22 from a baffle body 34 provided in the region of the diaphragm 14 is influenced and the measuring signal 22 is evaluated or evaluable by the baffle body at least also with respect to a contribution to the measuring signal 22.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention concerne un procédé d'exploitation d'un transducteur de mesure de pression (40). Elle concerne également un tel transducteur de mesure de pression (40), qui est raccordé au moins à une ligne d'impulsions à haute pression (16) et à une ligne d'impulsions à basse pression (18) par une ligne (12) dans la région située avant et après un point de discontinuité, notamment un diaphragme (14). Un capteur de pression (20) compris dans le transducteur de mesure de pression (40) fournit un signal de mesure (22) relativement à une pression dans la ligne d'impulsions à haute pression (16) ou dans la ligne d'impulsions à basse pression (18), ou à une différence de ces pressions. Le signal de mesure (22) fourni par le capteur de pression (20) est influencé par un corps déflecteur (34) prévu dans la région du diaphragme (14), et le signal de mesure (22) est interprété au moins également relativement à une contribution au signal de mesure (22) à travers le corps déflecteur.
PCT/EP2006/011255 2006-11-23 2006-11-23 Procédé de diagnostic d'un engorgement d'une ligne d'impulsions pour un transducteur de mesure de pression, et transducteur de mesure de pression WO2008061551A1 (fr)

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PCT/EP2006/011255 WO2008061551A1 (fr) 2006-11-23 2006-11-23 Procédé de diagnostic d'un engorgement d'une ligne d'impulsions pour un transducteur de mesure de pression, et transducteur de mesure de pression

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DE102009045372A1 (de) * 2009-10-06 2011-04-07 Endress + Hauser Gmbh + Co. Kg Durchflussmessanordnung und Verfahren zu deren Funktionsüberwachung
DE102013007180A1 (de) * 2013-04-17 2014-10-23 SIKA Dr. Siebert & Kühn GmbH & Co. KG Verfahren zur Auswertung eines Ausgangssignales eines Wirbeldurchflussmessgerätes (WDM) zur Verifikation des Vorliegens einer Strömung
DE102014119240A1 (de) * 2014-12-19 2016-06-23 Endress + Hauser Gmbh + Co. Kg Durchflussmessanordnung nach dem Differenzdruckmessprinzip zur Messung eines Durchflusses eines Mediums
WO2019129480A1 (fr) 2017-12-29 2019-07-04 Endress+Hauser Flowtec Ag Tuyau pour un transducteur, transducteur comprenant un tuyau de ce type et système de mesure ainsi formé
DE102018110456A1 (de) * 2018-05-02 2019-11-07 Endress + Hauser Flowtec Ag Meßsystem sowie Verfahren zum Messen einer Meßgröße eines strömenden Fluids
EP3594634A1 (fr) * 2018-07-10 2020-01-15 SIKA Dr.Siebert & Kühn GmbH & Co. KG. Débitmètre

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US20040068392A1 (en) * 2002-10-07 2004-04-08 Dinkar Mylaraswamy Control system and method for detecting plugging in differential pressure cells

Cited By (16)

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US8522625B2 (en) 2009-10-06 2013-09-03 Endress + Hauser Gmbh + Co. Kg Flow measuring apparatus including a deflectable membrane applied to a constriction
DE102009045372A1 (de) * 2009-10-06 2011-04-07 Endress + Hauser Gmbh + Co. Kg Durchflussmessanordnung und Verfahren zu deren Funktionsüberwachung
DE102013007180A1 (de) * 2013-04-17 2014-10-23 SIKA Dr. Siebert & Kühn GmbH & Co. KG Verfahren zur Auswertung eines Ausgangssignales eines Wirbeldurchflussmessgerätes (WDM) zur Verifikation des Vorliegens einer Strömung
DE102014119240A1 (de) * 2014-12-19 2016-06-23 Endress + Hauser Gmbh + Co. Kg Durchflussmessanordnung nach dem Differenzdruckmessprinzip zur Messung eines Durchflusses eines Mediums
US10006790B2 (en) 2014-12-19 2018-06-26 Endress + Hauser Gmbh + Co. Kg Flow-rate measurement assembly according to the differential-pressure measurement principle
CN111512083A (zh) * 2017-12-29 2020-08-07 恩德斯+豪斯流量技术股份有限公司 用于换能器的管件、包括该管件的换能器以及由此形成的测量系统
WO2019129480A1 (fr) 2017-12-29 2019-07-04 Endress+Hauser Flowtec Ag Tuyau pour un transducteur, transducteur comprenant un tuyau de ce type et système de mesure ainsi formé
DE102017012067A1 (de) 2017-12-29 2019-07-04 Endress+Hauser Flowtec Ag Rohr für einen Meßwandler, Meßwandler mit einem solchen Rohr sowie damit gebildetes Meßsystem
US11441930B2 (en) 2017-12-29 2022-09-13 Endress+Hauser Flowtec Ag Tube for a transducer, transducer comprising such a tube, and measuring system formed therewith
CN111512083B (zh) * 2017-12-29 2022-07-05 恩德斯+豪斯流量技术股份有限公司 用于换能器的管件、包括该管件的换能器以及由此形成的测量系统
WO2019211074A1 (fr) 2018-05-02 2019-11-07 Endress+Hauser Flowtec Ag Système de mesure ainsi que procédé de mesure d'une grandeur de mesure d'un fluide en écoulement
DE102018110456A1 (de) * 2018-05-02 2019-11-07 Endress + Hauser Flowtec Ag Meßsystem sowie Verfahren zum Messen einer Meßgröße eines strömenden Fluids
US11906335B2 (en) 2018-05-02 2024-02-20 Endress+Hauser Flowtec Ag Measuring system and method for measuring a measurement variable of a flowing fluid
CN110702176A (zh) * 2018-07-10 2020-01-17 西卡西伯特博士及屈恩有限及两合公司 流量计
US11333536B2 (en) 2018-07-10 2022-05-17 SIKA Dr. Siebert & Kühn GmbH & Co. KG Flow meter
EP3594634A1 (fr) * 2018-07-10 2020-01-15 SIKA Dr.Siebert & Kühn GmbH & Co. KG. Débitmètre

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