WO2006077133A1 - Durchflussmesseinrichtung - Google Patents
Durchflussmesseinrichtung Download PDFInfo
- Publication number
- WO2006077133A1 WO2006077133A1 PCT/EP2006/000496 EP2006000496W WO2006077133A1 WO 2006077133 A1 WO2006077133 A1 WO 2006077133A1 EP 2006000496 W EP2006000496 W EP 2006000496W WO 2006077133 A1 WO2006077133 A1 WO 2006077133A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- measuring device
- flow measuring
- flow
- magnetic
- Prior art date
Links
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
- G01F1/56—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 electric or magnetic effects
- G01F1/58—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 electric or magnetic effects by electromagnetic flowmeters
Definitions
- the invention relates to a flow measuring device for measuring the flow rate of a fluid flowing in a pipeline according to the magnetic-inductive method according to the preamble of claim 1.
- Magnetic-inductive flow measuring devices known in the prior art include special magnetic-inductive measuring devices that are installed when they are inserted into the pipeline in which they are to measure the flow of a flowing fluid.
- the installation of the magnetic-inductive measuring devices takes place via flange connections or via flangeless installation (so-called wafer installation).
- magnetic-inductive measuring devices The basic structure and operating principle of magnetic-inductive measuring devices are described, for example, in the Encyclopedia of Measurement and Automation Technology, edited by Elmar Schrüfer, VDI-Verlag, Dusseldorf 1992, pp. 262-263. Due to the principle of operation, magnetic-inductive measuring devices can only be used be used for measuring the flow of electrically conductive fluids. Under fluid substances is here primarily a liquid to understand, but it could also be a gas. Today, devices are also known in which in addition to the flow measurement still takes place recognition whether the measuring tube is completely, partially or not filled.
- Magnetic-inductive measuring devices are used in particular in a number of industrial process plants, for example in the field of water management (flow measurement in drinking water preparation and wastewater treatment), in the field of chemical and petrochemical industry (flow measurement of water, acids, Lyes, etc.), in the field of the pharmaceutical industry and in the field of the food industry (flow measurement of water, juices, beer, milk products etc.).
- the flanges required in known magnetic-inductive flow measuring device represent a significant cost factor. Another cost factor is the need to install known electromagnetic flowmeters at certain installation sites in the process pipeline in which to measure.
- the process piping must be separated, a piece of pipe that corresponds in length to the length of the magnetic-inductive measuring device, the process piping is removed, and in its place, the magnetic-inductive measuring device is inserted into the process pipe and connected again fluid-tight. Overall, this procedure for installing a magneto-inductive flow measuring device is very expensive.
- the flow measuring device comprises the pipeline itself and an integrated electrode assembly into the pipeline and a magnet system integrated in the pipeline for generating the measuring magnetic field.
- the advantage of a flow measuring device according to the invention is that no longer a separate magnetic-inductive flowmeter must be retrofitted into the pipeline, but that the process piping itself is used quasi as a measuring device.
- the process piping is provided at certain points by integration of an electrode assembly and a magnet system in the pipeline with a flow measurement functionality.
- a flow measuring device according to the invention eliminates the need to separate the pipeline to create the measuring point. Because the measuring point is already created in the pipe section by integration of the electrode assembly and the magnet system in the pipe itself. With the installation of the piping system in the process plant, the flow measuring device is thus automatically built.
- the flow measuring device additionally comprises an electronic signal converter or signal transmission module integrated in the tube wall.
- the signal converter or signal transmission module can comprise, for example, an impedance converter and a signal preamplifier or a filter module, as well as modules for transmitting the measured signals to a process control center.
- the signal transmission can be done for example with two- or four-wire technology, but also via a fieldbus system.
- the flow measuring jobs created through an inventive • flow measuring device in the process piping system are thus Shortcut known in principle way with the process control station or the process control level - and network ready. It can of course be integrated into the pipe wall signal transmission modules for wireless signal transmission.
- the flow measuring device according to the invention comprises a pipeline made of plastic.
- This can in particular also be formed from a fiber composite material and manufactured in winding technology.
- the electrode arrangement comprises conductive regions of the substance-side pipe boundary surface.
- This material-side pipe boundary surface will usually be the pipe inner wall.
- the inside of the pipeline is lined with a so-called liner layer, wherein the liner is used to achieve a high corrosion resistance.
- liner layer is made for example of PTFE plastic or a similar suitable material.
- Methods are known to those skilled in the art to make such plastic pipes, in particular also fiber composite pipes, zone-wise electrically conductive.
- the contacting of such integrated into the pipeline electrode arrangements with the signal converter or signal transmission module is done for example via - also embedded in the pipeline - electrical connection lines.
- magnet system and / or the electrode arrangement are already wrapped in the pipe wall during the production of the pipeline or is integrated in a different way. Then, as it were, an "intelligent" pipeline with an integrated flow measuring point is created.
- a flow measuring device can also be subsequently applied to an existing pipeline. If this pipeline is formed from a fiber composite material in winding technology, the magnet system and the electrode arrangement can subsequently be applied or introduced at each selected location on the pipeline and subsequently wrapped with layers of fiber composite material without the pipeline being separated. At the measuring point created from this way, the pipe wall is then thickened only by a small amount. The connection lines of the electronic signal converter and / or signal transmission assembly can then protrude from the pipe wall, so that they are accessible from the outside.
- FIG. 1 shows a first embodiment of a magneto-inductive flow measuring system according to the invention with conductive signal pick-up and with a fiber composite pipe in its manufacture with a wound magnetic system, schematically in longitudinal section;
- Fig. 2 shows a second embodiment of a magnetic inductive flow measuring system according to the invention with capacitive signal pickup and with a in a pipeline made of fiber composite material in their production with wrapped magnet system, schematically in cross section
- Fig. 3 is a schematic, exemplary representation of a process plant with a piping system in which integrates four partial pipe sections in the pipe wall electrode systems and magnet systems are mounted.
- Fig. 1 shows a section of a process pipe 1, the pipe wall is made of a fiber composite material in winding technology. Individual layers of semi-finished fiber 10 form a composite material with a plastic resin 12. Fig. 1 shows a longitudinal section through the pipe section, the layering is indicated by parallel lines.
- any known in the composite technique method can be applied in an adapted form. Typical thicknesses of individual fiber composite layers are on the order of 0.12 mm to 3 mm.
- a magnet system 14 is integrated into the pipe wall by being wrapped in the manufacture of the pipe with in the layers of fiber composite material.
- the magnet system 14 consists of two circular exciter coils 16, 18 and a ferromagnetic core 20 for magnetic feedback.
- the winding planes of the annular exciting coils 16, 18 extend parallel to each other and to the tube center axis 4. Because of the longitudinal sectional view of the annular coils 16, 18 only the cut surfaces can be seen.
- the ferromagnetic core 20 consists of a flexible ferromagnetic metal sheet which follows between the two coils 16, 18 of an inner cylindrical surface of the pipe section 1 and thus ensures the magnetic return flow, and is embedded in the layers of fiber composite material.
- the exciter coils are conventionally wound flat coils. They are firmly embedded together with their (not shown here) supply lines in the fiber composite material of the pipe wall.
- an electronic signal preprocessing and signal transmission assembly 22 is embedded in the layers.
- measurement signal leads (not shown here) are present from the signal preprocessing module 22 to the electrode system.
- Signal lines 24 led to the outside.
- a transmitter module 26 via which the connection of the measuring point 2 to a central process control and guide unit 28 is established via a fieldbus system 30.
- the process control unit 28 includes at least one process computer.
- the flow measurement system of Fig. 1 comprises a conductive signal tap.
- a pair of electrodes of which only one electrode 32 is shown in FIG. 1, is integrated into the pipe inner wall.
- the measuring electrodes 32 are arranged so that their connecting line is perpendicular to the direction of the magnetic field B generated by the exciting coils 16, 18.
- All other additional devices which are known and usually present in magnetic-inductive measuring devices, for example grounding electrodes for contacting the fluid or shielding electrodes, are present in the flow measuring device according to FIG. 1, although not shown here. This is also true for the signal lines from the measuring electrodes 32 to the signal preprocessing module 22.
- a first inner layer is wound on a cylindrical core, for example of aluminum.
- a cylindrical core for example of aluminum.
- This can either consist of resin-impregnated fibers in the form of a so-called roving or semifinished fiber products, for example in the form of a tailored fabric with suitable individual fiber layers. It could also be first applied a liner layer of, for example Teflon, and then applied to this first layer of resin-impregnated fibers.
- the measuring electrodes are already attached at this stage. On this first layer, while covering the measuring electrodes, a few further layers are wound up, the leads being fixed to the measuring electrodes. After wrapping shield electrodes, the wall is revealed by a few more layers.
- the parts of the magnet system namely the ferromagnetic core and the exciting coils, are fixed and then wrapped and finally fixed.
- the excitation coils 16, 18 are mounted so that the magnetic field in the tube interior perpendicular to the pipe center axis 4 and perpendicular to the connecting line between see the measuring electrodes 32 extends, as indicated in Fig. 1 by the arrows B.
- the magnet system depends on a very high positioning accuracy, in particular to a low rotation, if a high measurement accuracy is to be achieved. With appropriate careful winding the achievable geometric precision is very high. Thus, one can limit a twist of the coils and the core of less than one degree.
- the signal preprocessing assembly 22 is fixed and wrapped by further layers.
- the wrapping of the magnet system 14 and the Signalvor kausbaud 22 happens locally limited to the measuring point two forming portion of the pipe section 1.
- the pipe wall is slightly thicker than in the remaining part of the pipe section.
- a shielding layer 34 of conductive material for example, from a semi-finished fiber made of electrically conductive material such.
- the measuring electrodes 32 could also be constructed from pieces of electrically conductive carbon fibers.
- the transmitter module 26 can already contain a variety of functional subgroups for signal processing, for further filtering, buffering and transmission - either via bus cables, then it includes corresponding modules for the realization of the respectively required bus transmission protocol, or for wireless transmission by means of radio stations included.
- the core is removed again by pulling it out of the finished cured pipe section.
- Known techniques such. As the heating of the core can be used to support.
- a variant of the manufacturing method is that a cylindrical tube of liner material, for example of Teflon or thermoplastic, is used as the core. The tube can be brought into the required cylindrical shape, for example by applying compressed gas. After applying the fiber composite material with all embedded components and subsystems to the liner, the liner core is then removed again by pulling it out.
- the liner remains in the interior of the pipe section 1 after application of the fiber composite material layers.
- FIG. 2 shows a second embodiment of a magneto-inductive flow measuring system according to the invention, identical or identically acting parts or assemblies bearing the same reference numerals as in FIG. 1, supplemented in each case by the letter A.
- the flow measuring system according to the invention is shown in cross section.
- the difference from the exemplary embodiments shown in FIG. 1 is that, in the embodiment according to FIG. 2, the signal tap takes place capacitively.
- the pipe section 1a at a small distance from the pipe inner surface capacitive electrodes 36 and outwardly corresponding shielding electrodes 38 are wrapped.
- the use of shielding electrodes as well as the basic structure of a capacitive signal recording system in connection with a magnetic-inductive flow measuring system are basically known in the rest.
- FIG. 3 shows a schematic, exemplary representation of a process plant with a pipeline system 40, in which flow measurement sites were created on four pipe sections 42, 44, 46, 48 by flow measuring devices according to the invention.
- the reference numerals 42, 44, 46, 48 are therefore also used below to denote the flow measuring points.
- the schematic, exemplary representation of a process plant comprises a reservoir 50 in which a liquid substance is stored.
- the liquid substance from the reservoir 50 is passed into two reactors 52, 54.
- the substance is different in processed final products, and then stored in intermediate storage containers 56, 58 and stored.
- the piping system 40 includes in addition to the already mentioned, the measuring points bearing pipe pieces 42, 44, 46, 48 pipe bends still 60, T-pieces 62 and straight pieces of pipe 64. All parts of the piping system 40 are made of fiber composite material, as in the plant to processing substance is particularly corrosive and chemically aggressive.
- the measuring points forming pipe sections 42, 44, 46, 48 are each constructed as described in FIGS. 1 and 2. All pipeline pieces forming the pipeline system 40 are connected to each other at connection points 66 indicated by dashed lines by known fiber composite techniques.
- the signal lines 24, 24 ⁇ 24 ", 24 '" of the pipe sections 42, 44, 46, 48 are connected to a fieldbus system 30, to which the process control and lead unit 28 a is connected with integrated therein process computer.
- the process control unit 28 a the evaluation and further processing of the flow data supplied from the process pipe system 40 by means of the flow measuring devices according to the invention, for example, for balancing, quality monitoring or the like.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/794,816 US7578202B2 (en) | 2005-01-21 | 2006-01-20 | Pipeline with integrated flow meter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005002905A DE102005002905A1 (de) | 2005-01-21 | 2005-01-21 | Durchflussmesseinrichtung |
DE102005002905.1 | 2005-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006077133A1 true WO2006077133A1 (de) | 2006-07-27 |
Family
ID=36570683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/000496 WO2006077133A1 (de) | 2005-01-21 | 2006-01-20 | Durchflussmesseinrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US7578202B2 (de) |
CN (1) | CN100567910C (de) |
DE (1) | DE102005002905A1 (de) |
WO (1) | WO2006077133A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2000790B1 (de) * | 2006-03-29 | 2012-09-12 | JMS Co., Ltd. | Druckdetektionseinrichtung |
DE102008038163B4 (de) * | 2008-08-18 | 2010-10-21 | Abb Technology Ag | Durchflussmesseinrichtung |
WO2011020059A1 (en) * | 2009-08-14 | 2011-02-17 | Paul Lott | Pipeline inspection apparatus and method |
US8245580B2 (en) * | 2009-10-02 | 2012-08-21 | Rosemount Inc. | Compliant coil form |
DE102011085408A1 (de) * | 2011-10-28 | 2013-05-02 | Endress + Hauser Flowtec Ag | Meßwandler sowie damit gebildetes Meßsystem |
US9316514B2 (en) * | 2014-03-26 | 2016-04-19 | Rosemount Inc. | High pressure wafer style magnetic flowmeter |
DE102014105645B4 (de) * | 2014-04-22 | 2015-11-19 | Endress + Hauser Flowtec Ag | Durchflussmessgerät für strömende Fluide |
US9255825B1 (en) * | 2014-09-30 | 2016-02-09 | Rosemount Inc. | Self-aligning wafer-style process instrument |
US10371550B2 (en) * | 2016-10-24 | 2019-08-06 | Ademco Inc. | Compact magnetic field generator for magmeter |
DE102019118711B4 (de) * | 2019-07-10 | 2024-06-27 | Endress+Hauser Flowtec Ag | Das magnetisch-induktive Durchflussmessgerät und Verfahren zur Herstellung des magnetisch-induktiven Durchflussmessgerätes |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3406569A (en) * | 1965-07-07 | 1968-10-22 | Fischer & Porter Co | Magnetic flowmeter of improved linearity |
US3824856A (en) * | 1973-01-22 | 1974-07-23 | Fischer & Porter Co | High-pressure electromagnetic flowmeter |
US4181018A (en) * | 1977-02-23 | 1980-01-01 | Fischer & Porter Co. | Unitary electromagnetic flowmeter |
US4741215A (en) * | 1985-07-03 | 1988-05-03 | Rosemount Inc. | Flow tube for a magnetic flowmeter |
US4774844A (en) * | 1987-06-25 | 1988-10-04 | Fischer & Porter Co. | Encapsulated electromagnetic flowmeter |
US4892764A (en) * | 1985-11-26 | 1990-01-09 | Loctite Corporation | Fiber/resin composites, and method of making the same |
EP1300658A2 (de) * | 2001-10-03 | 2003-04-09 | Hemina S.p.A. | Elektromagnetischer Durchflussmesser für elektrisch leitende Flüssigkeiten |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1924152U (de) * | 1965-06-29 | 1965-09-23 | J C Eckardt A G | Magnetische durchflussmesser fuer abwasserleitungen. |
US3479871A (en) * | 1968-03-06 | 1969-11-25 | Vincent J Cushing | Electromagnetic flowmeter including hum compensation means |
US3608375A (en) * | 1968-11-05 | 1971-09-28 | Vincent J Cushing | Electromagnetic flowmeter |
US4098118A (en) * | 1977-02-23 | 1978-07-04 | Fischer & Porter Co. | Unitary electromagnetic flowmeter |
US4567775A (en) * | 1977-02-23 | 1986-02-04 | Fischer & Porter Co. | Unitary electromagnetic flowmeter having molded electrodes |
US4214477A (en) * | 1978-12-07 | 1980-07-29 | Fischer & Porter Co. | Flangeless electromagnetic flowmeter |
JPS5934117A (ja) * | 1982-08-20 | 1984-02-24 | Yamatake Honeywell Co Ltd | 電磁流量計 |
DE3823614A1 (de) * | 1988-07-12 | 1990-01-18 | Vollmar Oskar Gmbh | Verfahren und anlage zur durchflussmessung |
US5297425A (en) * | 1992-03-23 | 1994-03-29 | Tennessee Valley Authority | Electromagnetic borehole flowmeter system |
EP0762084A3 (de) * | 1995-09-12 | 1998-04-22 | Georg Fischer Rohrleitungssysteme AG | Magnetisch-induktiver Durchflussmesser |
US5731527A (en) * | 1996-09-20 | 1998-03-24 | Micro Motion, Inc. | Coriolis flowmeters using fibers and anisotropic material to control selected vibrational flowmeter characteristics |
DE19708857A1 (de) * | 1996-12-20 | 1998-07-02 | Krohne Ag | Magnetisch-induktives Durchflußmeßgerät für strömende Medien |
EP1207374A1 (de) * | 2000-10-19 | 2002-05-22 | ABB PATENT GmbH | Magnetisch-induktives Durchflussmessgerät |
US7344667B2 (en) * | 2002-04-23 | 2008-03-18 | Toray Industries, Inc. | Prepreg, production process thereof, and molded article |
US6983661B2 (en) * | 2003-05-15 | 2006-01-10 | Endress + Hauser Flowtec Ag | Electromagnetic flow sensor |
DE10347878A1 (de) * | 2003-10-10 | 2005-05-04 | Abb Patent Gmbh | Magnetisch-induktives Messgerät für strömende Stoffe und Verfahren zu dessen Herstellung |
DE10347890A1 (de) * | 2003-10-10 | 2005-05-04 | Abb Patent Gmbh | Magnetisch-induktives Messgerät für strömende Stoffe und Verfahren zu dessen Herstellung |
-
2005
- 2005-01-21 DE DE102005002905A patent/DE102005002905A1/de not_active Withdrawn
-
2006
- 2006-01-20 US US11/794,816 patent/US7578202B2/en not_active Expired - Fee Related
- 2006-01-20 WO PCT/EP2006/000496 patent/WO2006077133A1/de not_active Application Discontinuation
- 2006-01-20 CN CNB2006800029075A patent/CN100567910C/zh not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3406569A (en) * | 1965-07-07 | 1968-10-22 | Fischer & Porter Co | Magnetic flowmeter of improved linearity |
US3824856A (en) * | 1973-01-22 | 1974-07-23 | Fischer & Porter Co | High-pressure electromagnetic flowmeter |
US4181018A (en) * | 1977-02-23 | 1980-01-01 | Fischer & Porter Co. | Unitary electromagnetic flowmeter |
US4741215A (en) * | 1985-07-03 | 1988-05-03 | Rosemount Inc. | Flow tube for a magnetic flowmeter |
US4892764A (en) * | 1985-11-26 | 1990-01-09 | Loctite Corporation | Fiber/resin composites, and method of making the same |
US4774844A (en) * | 1987-06-25 | 1988-10-04 | Fischer & Porter Co. | Encapsulated electromagnetic flowmeter |
EP1300658A2 (de) * | 2001-10-03 | 2003-04-09 | Hemina S.p.A. | Elektromagnetischer Durchflussmesser für elektrisch leitende Flüssigkeiten |
Also Published As
Publication number | Publication date |
---|---|
US7578202B2 (en) | 2009-08-25 |
DE102005002905A1 (de) | 2006-07-27 |
US20080022781A1 (en) | 2008-01-31 |
CN100567910C (zh) | 2009-12-09 |
CN101107498A (zh) | 2008-01-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2006077133A1 (de) | Durchflussmesseinrichtung | |
DE102005002907A1 (de) | Magnetisch-induktives Durchflussmessgerät | |
DE19708857A1 (de) | Magnetisch-induktives Durchflußmeßgerät für strömende Medien | |
WO2006097118A1 (de) | Rohrförmiger einsatz für einen magnetisch induktiven durchflussmesser | |
WO2015158503A1 (de) | Gehäuse für magnetisch induktives durchflussmessgerät | |
WO2008028872A1 (de) | Magnetisch- induktives durchflussmessgerät | |
DE102006018415B4 (de) | Messrohr für einen magnetisch induktiven Durchflussmesser | |
DE3024767A1 (de) | Elektromagnetischer stroemungsmesser | |
WO2021037491A1 (de) | Magnetisch-induktive durchflussmesssonde und verfahren zum betreiben einer magnetisch-induktiven durchflussmesssonde | |
DE102014113404A1 (de) | Magnetisch-induktives Durchflussmessgerät mit einem Vierspulen- Magnetsystem | |
DE102005060208A1 (de) | Messaufnehmer eines magnetisch induktiven Durchflussmessgeräts | |
EP1536176A2 (de) | Flanschverbindung und Verfahren zu deren Herstellung | |
EP3301411A1 (de) | Messrohreinheit und coriolis-massedurchflussmessgerät | |
DE102004057695B4 (de) | Magnetisch induktiver Durchflussmesser mit einem Messrohr aus Kunststoff | |
DE102018131167A1 (de) | Magnetisch-induktives Durchflussmessgerät | |
EP1756531A1 (de) | Magnetisch-induktiver durchflussaufnehmer | |
DE2330593A1 (de) | Keramik-stroemungsmesswertumformer | |
DE19705436C2 (de) | Meßrohranordnung für elektromagnetische Durchflußmesser und Verfahren zu ihrer Herstellung | |
EP1692465A1 (de) | Magnetisch-induktiver durchflussaufnehmer und verfahren zu dessen herstellung | |
DE102010029343A1 (de) | Adapter zum Anschluss eines flanschlossen Durchflussmessgeräts an eine Rohrleitung | |
EP1662236A2 (de) | Coriolis-Massendurchflussmessgerät und Verfahren zur Herstellung eines Messrohrs für ein Coriolis-Massendurchflussmessgerät | |
DE102020113950A1 (de) | Vorschweißflansch für den Anschluss eines Messrohrs eines Durchflussmessgeräts und Durchflussmessgerät mit einem Vorschweißflansch | |
DE102019118711A1 (de) | Das magnetisch-induktive Durchflussmessgerät und Verfahren zur Herstellung des magnetisch-induktiven Durchflussmessgerätes | |
DE102006008433B4 (de) | Magnetisch-induktives Durchflussmessgerät mit einem Messrohr aus Kunststoff | |
DE102011014225A1 (de) | Durchflussmessgerät |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 11794816 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680002907.5 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 11794816 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06706329 Country of ref document: EP Kind code of ref document: A1 |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 6706329 Country of ref document: EP |