WO2007012571A1 - Transmetteur de pression hydraulique et capteur de pression a transmetteur de pression hydraulique - Google Patents

Transmetteur de pression hydraulique et capteur de pression a transmetteur de pression hydraulique Download PDF

Info

Publication number
WO2007012571A1
WO2007012571A1 PCT/EP2006/064209 EP2006064209W WO2007012571A1 WO 2007012571 A1 WO2007012571 A1 WO 2007012571A1 EP 2006064209 W EP2006064209 W EP 2006064209W WO 2007012571 A1 WO2007012571 A1 WO 2007012571A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
sensor
separation membrane
membrane
outer edge
Prior art date
Application number
PCT/EP2006/064209
Other languages
German (de)
English (en)
Inventor
Wolfgang Dannhauer
Raimund Becher
Original Assignee
Endress+Hauser Gmbh+Co.Kg
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 Endress+Hauser Gmbh+Co.Kg filed Critical Endress+Hauser Gmbh+Co.Kg
Publication of WO2007012571A1 publication Critical patent/WO2007012571A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G01L19/0627—Protection against aggressive medium in general
    • G01L19/0645—Protection against aggressive medium in general using isolation membranes, specially adapted for protection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0092—Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/04—Means for compensating for effects of changes of temperature, i.e. other than electric compensation

Definitions

  • the present invention relates to a hydraulic diaphragm seal and a pressure transducer with a hydraulic diaphragm seal.
  • Hydraulic diaphragm seals usually include a body, a
  • the pressure chamber and the hydraulic path are filled with a transmission fluid.
  • a temperature-sensitive temperature sensor arranged next to the separating membrane requires either an additional opening in the media container or the media-carrying line through which the temperature sensor can be inserted, or for a given separating membrane surface the radius of the base body must be increased by such a value that on the edge There is still room for mounting a temperature sensor next to the separation membrane.
  • the object is achieved by the pressure transmitter according to the independent claim 1 and the pressure transducer according to the independent claim. 8
  • the pressure transmitter according to the invention for transmitting a pressure of a process smediums comprises:
  • the separation membrane is a ring membrane having a circumferential inner edge and a peripheral outer edge and both the inner edge and the outer edge are pressure-tightly connected to the surface of the base body; wherein the pressure transmitter further comprises a sensor for a second measurement, which is arranged in the region surrounded by the inner edge of the separation membrane.
  • the sensor for a second measured variable may be, for example, a temperature sensor, a humidity sensor, a potentiometric sensor, in particular a pH sensor, a photometric, spectrometric or another analytical sensor.
  • the main body may, for example, have a continuous, central bore into which the second sensor is inserted from the back of the base body remote from the media.
  • the sensor can be viewed from the front, i. the side to which the separation membrane is attached to the base body or in a central opening of the base body are attached.
  • the base body and the separation membrane to a metallic material, wherein the separation membrane may be welded or soldered to the surface of the body, optionally may be provided between the separation membrane and the material of the body intermediate layers to facilitate the attachment of the separation membrane ,
  • the separation membrane has, for example, stainless steel, tantalum, or coated metallic membranes.
  • Separation membrane extends the so-called work area, ie the range is deflected to record temperature-induced changes in volume of the transfer fluid in the pressure chamber can.
  • This work area as well as possibly the aligned area of the surface of the body, the so-called Membrane bed, may have a wave structure, whereby the maximum volume stroke of the separation membrane is increased.
  • the separation membrane between the inner and / or outer edge and the working area each have a circumferential bead, which is preferably deeper than the amplitudes of the wave structure of the working area.
  • the separation membrane which, apart from the possibly provided wave structure and optionally provided beads, is designed substantially in sections, may be formed as a cup membrane, d. h.
  • the separation membrane has an inner edge region and an outer edge region and a work area extending between the inner and the outer edge region, wherein the work area, based on a plane defined by the outer edge region of the separation membrane is lower ,
  • the surface of the body is designed accordingly, d. H. it has an axially projecting outer edge region and a corresponding axially projecting inner region and an intermediate membrane bed over which extends the working region of the separation membrane, wherein the separation membrane with its outer edge region and its inner edge region at corresponding outer and inner edge region in the surface is attached.
  • the separating diaphragm designed as a membrane membrane preferably has inclined transition surfaces which extend between the working area and the edge areas.
  • the aforementioned beads are to be realized in cup membranes, they preferably extend between the transition surfaces and the working area.
  • the pressure transducer according to the invention comprises an inventive
  • Pressure transmitter and a pressure measuring cell which can be acted upon by the hydraulic path with the pressure of the process medium, as well as an electronic circuit to generate from a primary signal of the pressure measuring cell, a conditioned pressure-dependent signal.
  • the pressure measuring cell can be designed according to all principles familiar to the person skilled in the art, for example as capacitive, resistive in the context of the piezoresistive pressure measuring cell, or measuring cell according to a resonator principle.
  • the electronic circuit also processes the signals of the sensor for the second measured variable.
  • the sensor for the second measured variable is a temperature sensor, its signal can be used to correct a temperature error of the pressure reading.
  • pressure transducer refers to the context of the present invention
  • FIG. 1 shows a longitudinal section through a pressure transducer according to the invention
  • FIG. 2 shows a longitudinal section through an alternative embodiment of a pressure transmitter according to the invention.
  • the pressure transducer shown comprises a base body 1 with a surface 2 to which an annular separation membrane 3 is fixed with circumferential welds on its inner edge 31 and its outer edge 32, whereby a pressure chamber 4 forms between the base body and the separation membrane. From the pressure chamber 4, a capillary 5 extends, which connects to a bore 6 through the base body 1 in order to transmit the pressure to a pressure receiver.
  • the components described so far relate to a diaphragm seal module, which is combined with a sensor module to form the pressure transducer according to the invention.
  • the sensor module comprises a sensor carrier body 10, to which a piezoresistive pressure measuring cell 11 is attached.
  • the pressure measuring cell 11 is acted upon via a bore 12 into which the capillary 5 opens, with the pressure to be measured.
  • the pressure measuring cell 11 serves as a pressure receiver of the through the capillary 5 and the holes 6 and 12 realized hydraulic path.
  • a filling pin not shown here in detail is arranged, so that the annular gap between the lateral surface of the bore and the filler pin applies as flame arrestor of type of protection Exd.
  • the primary signal of the pressure measuring cell 11 is first preprocessed by a circuit on a circuit board 14 before it is further processed and processed for communication via the common protocols, such as 4-2OmA or digital fieldbus protocols.
  • the pressure transducer according to the invention further comprises a temperature sensor
  • the primary signal of the temperature sensor for example, a PT 10,000 sensor is fed via lines 21 of the board 14 to be processed as a measurement signal and optionally used to compensate for the primary signal of the pressure sensor.
  • the lines 21 are guided in a stainless steel tube 22, which extends between the main body 1 and the sensor carrier body 10.
  • a glass feedthrough 23 of type of protection Exd is provided in the steel pipe.
  • the steel tube 22, which is completely through the Base body 1 extends is in the passage plane, that is welded to the separation membrane-side surface 2 of the base body 1 with a circumferential fillet weld 24 with the base body 1.
  • the main body 1 is l ⁇ integriert in the embodiment shown in a flange. Likewise, however, any other process connections are possible, such as threaded connections.
  • a cylindrical sleeve 16 which supports the sensor carrier body and the tube 22 and the capillary 5 protects.
  • the diaphragm seal according to FIG. 2 comprises a main body 41 with a medial side surface 42 to which an annular separating diaphragm 43 with its inner edge 44 and its outer edge 45 is fastened. Between the separation membrane and the main body 41, a pressure chamber is included, which communicates via a bore 46 with a hydraulic path. In the area enclosed by the inner edge of the separating membrane region of the base body 41, a bore 48 is provided, in which a temperature sensor 47 is arranged. Details are explained in connection with FIG. 1.
  • the separation membrane of this embodiment is designed as a Napfmembran.
  • the separation membrane comprises a deflectable working region 49 which is lower than the plane defined by the inner or outer edge region of the separation membrane.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention concerne un transmetteur de pression servant au transfert de pression d'un fluide de traitement, comprenant un corps de base (1) présentant une surface (2) et une membrane de séparation (3) qui est fixée à la surface (2), cependant qu'il est formé entre la membrane de séparation et la surface, une chambre de pression (4) qui communique, via une ouverture (6) ménagée dans la surface, avec un parcours hydraulique (7), la membrane de séparation étant sollicitée par le fluide de traitement, la chambre de pression (4) et le parcours hydraulique (5) étant remplis d'un liquide de transmission pour le transfert de la pression du fluide de traitement ; la membrane de séparation (3) est une membrane annulaire présentant un bord intérieur périphérique (31) et un bord extérieur périphérique (32), le bord intérieur et le bord extérieur étant reliés, étanches à la pression, avec la surface (2) du corps de base (1) ; le transmetteur de pression comprend en outre un détecteur (20) pour une seconde grandeur de mesure, ledit détecteur étant placé dans la zone entourée par le bord intérieur (31) de la membrane de séparation (3).
PCT/EP2006/064209 2005-07-28 2006-07-13 Transmetteur de pression hydraulique et capteur de pression a transmetteur de pression hydraulique WO2007012571A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005035931.0 2005-07-28
DE200510035931 DE102005035931B4 (de) 2005-07-28 2005-07-28 Hydraulischer Druckmittler und Druckwandler mit hydraulischem Druckmittler

Publications (1)

Publication Number Publication Date
WO2007012571A1 true WO2007012571A1 (fr) 2007-02-01

Family

ID=37036772

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/064209 WO2007012571A1 (fr) 2005-07-28 2006-07-13 Transmetteur de pression hydraulique et capteur de pression a transmetteur de pression hydraulique

Country Status (2)

Country Link
DE (1) DE102005035931B4 (fr)
WO (1) WO2007012571A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009067016A1 (fr) * 2007-11-19 2009-05-28 Presens As Unité de détection de pression
DE102012018551A1 (de) * 2012-09-20 2014-03-20 Wika Alexander Wiegand Se & Co. Kg Edelstahlrohr mit Randhärtung
US9267758B2 (en) 2011-07-05 2016-02-23 Roberto RISICATO Pointer illuminator device for autonomous use and with a toy weapon

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007056844A1 (de) 2007-11-23 2009-06-10 Endress + Hauser Gmbh + Co. Kg Membranbett für einen Druckmittler, Druckmittler mit einem solchen Membranbett sowie Drucksensor mit einem solchen Druckmittler
DE102010012823C5 (de) * 2009-12-11 2017-03-02 Armaturenbau Gmbh Druckmittler mit Temperatursensor
DE102016114421A1 (de) * 2016-08-04 2018-02-08 Thorsten Michel Meßeinrichtung
DE102018123433A1 (de) 2018-09-24 2020-03-26 Endress+Hauser SE+Co. KG Hydraulischer Druckmittler und Druckaufnehmer mithydraulischem Druckmittler
DE102020101446A1 (de) 2020-01-22 2021-07-22 Endress+Hauser SE+Co. KG Hydraulischer Druckmittler und Druckaufnehmer mit hydraulischem Druckmittler

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801658A1 (de) * 1977-01-17 1978-07-20 Rosemount Inc Kapazitiver druckfuehler
US4924701A (en) * 1988-09-06 1990-05-15 Panex Corporation Pressure measurement system
WO2004097361A1 (fr) * 2003-04-29 2004-11-11 Endress+Hauser Gmbh+Co. Kg Capteur de pression a compensation de temperature

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD242274A1 (de) * 1985-11-07 1987-01-21 Mertik Veb Temperaturkompensierter elektrischer druckaufnehmer
DE4031791A1 (de) * 1990-10-08 1992-04-09 Leybold Ag Sensor fuer ein kapazitaetsmanometer
EP0757237B1 (fr) * 1995-08-01 2002-04-10 Endress + Hauser GmbH + Co. Capteur de pression
DE10105230A1 (de) * 2001-02-02 2002-08-29 Endress & Hauser Gmbh & Co Kg Differenzdrucksensor mit Überlastsicherung
DE10150691A1 (de) * 2001-10-17 2003-04-30 Endress & Hauser Gmbh & Co Kg Druckmeßaufnehmer mit Trennmembran und Temperaturkompensation
DE10152681A1 (de) * 2001-10-19 2003-04-30 Endress & Hauser Gmbh & Co Kg Druckmittler mit Trennmembran und Verfahren zu dessen Herstellung
DE10336914A1 (de) * 2003-08-07 2005-03-10 Grieshaber Vega Kg Druckmittler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801658A1 (de) * 1977-01-17 1978-07-20 Rosemount Inc Kapazitiver druckfuehler
US4924701A (en) * 1988-09-06 1990-05-15 Panex Corporation Pressure measurement system
WO2004097361A1 (fr) * 2003-04-29 2004-11-11 Endress+Hauser Gmbh+Co. Kg Capteur de pression a compensation de temperature

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009067016A1 (fr) * 2007-11-19 2009-05-28 Presens As Unité de détection de pression
US8122771B2 (en) 2007-11-19 2012-02-28 Presens As Pressure sensor unit
US9267758B2 (en) 2011-07-05 2016-02-23 Roberto RISICATO Pointer illuminator device for autonomous use and with a toy weapon
DE102012018551A1 (de) * 2012-09-20 2014-03-20 Wika Alexander Wiegand Se & Co. Kg Edelstahlrohr mit Randhärtung

Also Published As

Publication number Publication date
DE102005035931A1 (de) 2007-02-01
DE102005035931B4 (de) 2013-05-29

Similar Documents

Publication Publication Date Title
DE102005035931B4 (de) Hydraulischer Druckmittler und Druckwandler mit hydraulischem Druckmittler
EP3857196B1 (fr) Transmetteur de pression hydraulique et capteur de pression à transmetteur de pression hydraulique
DE10311977B4 (de) Druckgeber mit Prozeßkopplung
EP1167938B1 (fr) Dispositif de mesure de pression
EP1618362B1 (fr) Capteur de pression a compensation de temperature
EP2189774B1 (fr) Procédé destiné à la détection et à la compensation d'un changement de température rapide sur une cellule de mesure de pression
DE202016008703U1 (de) Druckmittleraufbau mit evakuierter Doppelmembran und Vakuumüberwachung und kombiniertem Alarmsignal
DE102011088044A1 (de) Drucksensoranordnung zur Erfassung eines Drucks eines fluiden Mediums in einem Messraum
EP2841899B1 (fr) Capteur de mesure de pression
US20120125112A1 (en) Pressure transmitter
DE102006057828A1 (de) Differenzdruckmeßaufnehmer
EP3384263B1 (fr) Ensemble capteur de pression et transducteur de mesure pour l'instrumentation de traitement comportant un tel ensemble capteur de pression
DE102006035230A1 (de) Druckmessaufnehmer
DE102015116147A1 (de) Sensorbaugruppe für einen Sensor, Sensor sowie damit gebildetes Meßsystem
DE102015216626A1 (de) Drucksensoranordnung sowie Messumformer zur Prozessinstrumentierung mit einer derartigen Drucksensoranordnung
WO2008046768A1 (fr) Générateur de pression, capteur de pression avec générateur de pression et procédé de fabrication d'un générateur de pression
DE102012025070A1 (de) Hydraulisches Messwerk mit koplanaren Druckeingängen und Differenzdrucksensor mit einem solchen Messwerk
DE102009024576B4 (de) Differenzdrucksensor
EP3309528B1 (fr) Transmetteur de pression de tubulure
EP2294376A1 (fr) Ensemble capteur de pression
EP3237866B1 (fr) Convertisseur de pression et procédé permettant de faire fonctionner ledit convertisseur
DE202016008710U1 (de) Druckmittleraufbau mit evakuierter Doppelmembran und Vakuumüberwachung mit Ringkanal
EP3232173B1 (fr) Capteur de pression différentielle
WO2015197254A1 (fr) Capteur de pression pour enregistrer la pression d'un milieu fluide dans une chambre de mesure
DE102020122193A1 (de) Hydraulischer Druckmittler und Druckaufnehmer mit hydraulischem Druckmittler

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase

Ref document number: 06777761

Country of ref document: EP

Kind code of ref document: A1