EP0505482A1 - Soundproofed holding device for an ultrasonic transducer - Google Patents

Soundproofed holding device for an ultrasonic transducer

Info

Publication number
EP0505482A1
EP0505482A1 EP91902149A EP91902149A EP0505482A1 EP 0505482 A1 EP0505482 A1 EP 0505482A1 EP 91902149 A EP91902149 A EP 91902149A EP 91902149 A EP91902149 A EP 91902149A EP 0505482 A1 EP0505482 A1 EP 0505482A1
Authority
EP
European Patent Office
Prior art keywords
ring
transducer
holder according
nozzle
cover
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP91902149A
Other languages
German (de)
French (fr)
Inventor
Alexander Von Jena
Hermann Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of EP0505482A1 publication Critical patent/EP0505482A1/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
    • 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
    • G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details

Definitions

  • the present invention relates to a holder for an ultrasound transducer for emitting or for receiving ultrasound radiation in or from a gaseous medium.
  • the radiation of ultrasound from an oscillating solid surface of a transducer into the medium gas leads to only a small one owing to the very large difference in the acoustic wave resistance of the material of the solid surface and the medium, this difference being of the order of magnitude of 4 powers of ten Power transmission ratio from the solid to the gaseous medium and vice versa.
  • Ultrasonic transducers are used in ultrasonic measuring devices for, in particular, flowing gases, e.g. to determine the one
  • Gas flowing through the pipe is as a gas meter, e.g. as a household gas meter.
  • the ultrasonic transducers which determine the measuring section within a tube, are still at a relatively short distance of e.g. Arranged 240 mm.
  • these transducers are inserted into the pipe wall and radiate the ultrasound obliquely to the pipe axis through the flowing medium gas.
  • One converter is the transmitter converter, the other converter the receiver converter.
  • measurement takes place alternately upstream and downstream and with the formation of the difference in the resulting signals.
  • Such ultrasonic flow meters are described in German patent application P 39 41 546.5; P 39 41 545.7; P 39 41 544.9 is described in detail, for which the present invention is an advantageous further development.
  • the evaluation of the received signal can be decisively impaired by sound intensity, which is transmitted from the pipe wall, for example, from sound sources that are even relatively distant.
  • the transducers used ie especially the receiving transducer, must be mounted in the device or in the tube wall in such a way that the body of the transducer and the tube wall are largely insulated from one another with regard to acoustic sound transmission.
  • a further contribution can be made to the at least partial use of material having a sound-absorbing property on the transducer.
  • FIG. 1 shows a basic diagram of a relevant ultrasound measuring device in tube form, on the flow medium of which
  • ultrasonic transducers 3 are attached. As can be seen, these ultrasonic transducers 3 are in diagonally inserted nozzles 1. In particular in the case of measuring devices which are intended for the measurement of such gases which must not be allowed to escape to the outside, appropriate seals must be provided at those points where the device , e.g. to insert or replace the transducer 3, is to be opened.
  • FIG. 2 shows a detailed illustration of such a lateral pipe socket 51 shown in FIG. 1 in longitudinal section.
  • This nozzle 1 is the actual holder for the transducer 11.
  • the obliquely cut, tubular nozzle 51 has a step 52.
  • the outer tube end of the connecting piece 51 is closed with a cover 58, a sealing ring 57 in a groove 56
  • the cover 58 has a clamping ring 55 as seen in the figure as an approach.
  • This clamping ring 55 is dimensioned to match the diameter of the step 52 of the nozzle 51.
  • This O-ring 54 not only serves as a further seal, but it holds the transducer 53 in the socket 51.
  • the step 2 together with the clamping ring 55, ensures precise positioning of the O-ring 54 in the socket 51 and the annular groove 59 in the transducer 11 for its exact positioning in relation to the O-ring 54.
  • the electrical connections of the converter 11 are omitted. There can be leads through the cover 58 or passages provided laterally in the wall of the connecting piece 51. These connections are to be designed in such a way that they in turn cannot cause any significant structure-borne noise transmission, which is ensured, for example, by the use of connecting strands.
  • an optimum of a sound-insulated holder with a linear pressure of the O-ring 54 is achieved, the pressure going back to the provided cylindrical clamping ring 55.
  • the actual gas-tight seal is formed by the additional sealing ring 57, which is pressed into the groove 57 when the cover 58 is screwed on and ensures a permanently reliable seal.
  • a structure-borne noise level of less than -140 dB can be achieved, which is lost in the noise of the received signal.
  • the invention achieves a gas-tight construction with nevertheless high acoustic decoupling and despite exactly defined transducer positioning.
  • level 52 and ring 55 for the socket and the groove 56 for the transducer body can also be interchanged, but the former arrangement per se is preferred.
  • a further development of the invention consists in providing a second O-ring 154 made of permanently elastic material, namely in an area near the sound-radiating front surfaces of the transducer 3.
  • This ring 154 is preferably used to close the gap 60 between the outer wall of the transducer 11 and the annular inner surface of the pipe socket 51 is inevitably present. It has been shown that dust, small particles and the like which settle in the gas flowing through the measuring tube 4 preferentially settle in this gap. This is prevented by the ring 154, which is inserted into the groove 156 of the transducer 11 and the groove 155 of the inner surface of the nozzle 51.

Abstract

Afin de retenir dans une position exacte et de manière insonorisée un transducteur ultrasonique (3) dans un fluxmètre (figure 1), on utilise un joint torique (4) situé entre des contacts linéaires (2, 5, 6) distribués selon le principe de support à trois points et dont un (rainure 6) retient le transducteur (3).In order to retain in an exact position and in a soundproofed manner an ultrasonic transducer (3) in a flux meter (figure 1), an O-ring (4) is used located between linear contacts (2, 5, 6) distributed according to the principle of three-point support, one of which (groove 6) retains the transducer (3).

Description

Schallisolierte Halterung eines Ultraschallwandlers Soundproof holder for an ultrasonic transducer
Die vorliegende Erfindung bezieht sich auf eine Halterung eines Ultraschallwandlers für das Aussenden bzw. für den Empfang von Ultraschallstrahlung in bzw. aus einem gasförmigen Medium.The present invention relates to a holder for an ultrasound transducer for emitting or for receiving ultrasound radiation in or from a gaseous medium.
Die Abstrahlung von Ultraschall von einer schwingenden Festkör¬ perfläche eines Wandlers in das Medium Gas führt in Folge des sehr großen Unterschiedes des akustischen Wellenwiderstandes des Materials der Festkörperfläche und des Mediums, dieser Unterschied liegt in der Größenordnung von 4 Zehner-Potenzen, zu einem nur geringen Leistungs-Übertragunsverhältnis vom Fest¬ körper in das gasförmige Medium und umgekehrt.The radiation of ultrasound from an oscillating solid surface of a transducer into the medium gas leads to only a small one owing to the very large difference in the acoustic wave resistance of the material of the solid surface and the medium, this difference being of the order of magnitude of 4 powers of ten Power transmission ratio from the solid to the gaseous medium and vice versa.
Man verwendet Ultraschallwandler in Ultraschall-Meßgeräten für insbesondere strömende Gase, so z.B. zur Bestimmung des einUltrasonic transducers are used in ultrasonic measuring devices for, in particular, flowing gases, e.g. to determine the one
Rohr durchströmenden Gasvolumens. Eine Anwendung eines solchen Gerätes ist die als Gaszähler, z.B. als Haushalts-Gaszähler.Gas flowing through the pipe. One application of such a device is as a gas meter, e.g. as a household gas meter.
In solchen Geräten sind die die Meßstrecke innerhalb eines Rohres bestimmenden Ultraschallwandler, bezogen auf die Rohr¬ achse, in einem noch relativ geringen Abstand von z.B. 240 mm angeordnet. Im allgemeinen sind diese Wandler in die Rohrwand eingesetzt und strahlen den Ultraschall schräggerichtet zur Rohrachse durch das strömende Medium Gas hindurch. Ein Wandler ist dabei der Sendewandler, der andere Wandler der Empfangs- waπdler. Im allgemeinen erfolgt Messung abwechselnd stromauf und stromab und mit Differenzbildung der sich ergebenden Signale. Solche Ultraschall-Durchflußmesser sind in der deut¬ schen Patentanmeldung P 39 41 546.5; P 39 41 545.7; P 39 41 544.9 ausführlich beschrieben, zu denen die vorliegen¬ de Erfindung eine vorteilhafte Weiterbildung ist.In such devices, the ultrasonic transducers, which determine the measuring section within a tube, are still at a relatively short distance of e.g. Arranged 240 mm. In general, these transducers are inserted into the pipe wall and radiate the ultrasound obliquely to the pipe axis through the flowing medium gas. One converter is the transmitter converter, the other converter the receiver converter. In general, measurement takes place alternately upstream and downstream and with the formation of the difference in the resulting signals. Such ultrasonic flow meters are described in German patent application P 39 41 546.5; P 39 41 545.7; P 39 41 544.9 is described in detail, for which the present invention is an advantageous further development.
Bei wie angegebenen geringen Wandlerabstaπd ergeben sich an- sich noch keine gravierenden Probleme in Folge auftretender Strömungsgeräusche. Die Auswertung des Empfangssignals kann jedoch entscheidend durch Schallintensität beeinträchtigt werden, die von der Rohrwand von z.B. sogar relativ weit entfernten Schallquellen herrührend übertragen wird. Um diese Körperschallübertragung zu minimieren, müssen die verwendeten Wandler, d.h. speziell der Empfangswandler, in dem Gerät bzw. in der Rohrwand so montiert sein, daß der Körper des Wandlers und die Rohrwand hinsichtlich akustischer Schallübertragung weitgehend voneinander isoliert sind. Einen weiteren Beitrag kann die wenigstens teilweise Verwendung von schalldämpfende Eigenschaft aufweisendem Material am Wandler erzielt werden.With the small converter spacing, as stated, there are no serious problems arising as a result Flow noise. However, the evaluation of the received signal can be decisively impaired by sound intensity, which is transmitted from the pipe wall, for example, from sound sources that are even relatively distant. In order to minimize this structure-borne noise transmission, the transducers used, ie especially the receiving transducer, must be mounted in the device or in the tube wall in such a way that the body of the transducer and the tube wall are largely insulated from one another with regard to acoustic sound transmission. A further contribution can be made to the at least partial use of material having a sound-absorbing property on the transducer.
Aufgabe der vorliegenden Erfindung ist es, insbesondere für Massenprodukte geeignet, eine schallisolierte Halterung eines Festkörper-Wandlers in einem wie einschlägigen Gerät anzugeben.It is an object of the present invention, particularly suitable for mass products, to provide a sound-insulated holder for a solid-state transducer in a device of this type.
Diese Aufgabe wird mit den Merkmalen des Patentanspruchs gelöst.This object is achieved with the features of the patent claim.
Die Figur 1 zeigt ein Prinzipbild eines einschlägigen Ultra¬ schallmeßgerätes in Rohrform, an dessen das strömende MediumFIG. 1 shows a basic diagram of a relevant ultrasound measuring device in tube form, on the flow medium of which
- führendem Rohr zwei Ultraschallwandler 3 angebracht sind. Wie ersichtlich, befinden sich diese Ultraschallwandler 3 in schräg gerichtet in die Rohrwaπd eingesetzten Stutzen 1. Insbesondere bei Meßgeräten, die für die Messung solcher Gase vorgesehen sind, die nicht nach außen treten dürfen, sind entsprechende Abdichtungen an solchen Stellen vorzusehen, an denen das Gerät, z.B. zum Einsetzen oder Auswechseln der Wandler 3, zu öffnen ist.- Leading tube two ultrasonic transducers 3 are attached. As can be seen, these ultrasonic transducers 3 are in diagonally inserted nozzles 1. In particular in the case of measuring devices which are intended for the measurement of such gases which must not be allowed to escape to the outside, appropriate seals must be provided at those points where the device , e.g. to insert or replace the transducer 3, is to be opened.
Fig. 2 zeigt in einer Detaildarstellung einen solchen in Fig. 1 gezeigten, seitlichen Rohransatz-Stutzen 51 im Längsschnitt. Dieser Stutzen 1 ist der eigentliche Halter für den Wandler- 11. Der schräg abgeschnittene, rohrförmige Stutzen 51 weist eine Stufe 52 auf. Das äußere Rohrende des Stutzen 51 ist mit einem Deckel 58 verschlossen, wobei ein Dichtring 57 in einer Nut 56FIG. 2 shows a detailed illustration of such a lateral pipe socket 51 shown in FIG. 1 in longitudinal section. This nozzle 1 is the actual holder for the transducer 11. The obliquely cut, tubular nozzle 51 has a step 52. The outer tube end of the connecting piece 51 is closed with a cover 58, a sealing ring 57 in a groove 56
- vorgesehen ist. Der Deckel 58 hat einen wie aus der Figur ersichtlichen Klemmring 55 als Ansatz. Dieser Klemmring 55 ist auf den Durchmesser der Stufe 52 des Stutzen 51 abgestimmt bemessen. Es ist ein O-Ring 54 aus Gummi oder einem vergleich¬ bar dauerelastischem Material vorgesehen, der wie aus 'der Fig. 2 ersichtlich plaziert ist. Dieser O-Ring 54 dient nicht nur einer weiteren Abdichtung, sondern er haltert den Wandler 53 im Stutzen 51. Die Stufe 2 bewirkt zusammen mit dem Klemmring 55 präzise Positionierung des O-Ringes 54 im Stutzen 5 1 und die Ringnut 59 im Wandler 11 sorgt für dessen exakte Positionierung gegenüber dem O-Ring 54.- is provided. The cover 58 has a clamping ring 55 as seen in the figure as an approach. This clamping ring 55 is dimensioned to match the diameter of the step 52 of the nozzle 51. There is provided an O-ring 54 of rubber or a vergleich¬ bar permanently elastic material, which is placed as seen in 'Fig. 2. This O-ring 54 not only serves as a further seal, but it holds the transducer 53 in the socket 51. The step 2, together with the clamping ring 55, ensures precise positioning of the O-ring 54 in the socket 51 and the annular groove 59 in the transducer 11 for its exact positioning in relation to the O-ring 54.
Der Übersichtlichkeit halber sind die elektrischen Anschlüsse des Wandlers 11 weggelassen. Es können durch den Deckel 58 hin¬ durchgeführte Leitungen oder auch seitlich in der Wand des Stutzen 51 vorgesehene Durchführungen sein. Diese Anschlüsse sind so auszubilden, daß sie ihrerseits keine nennenswerte Körperschallübertragung bewirken können, was z.B., durch die Verwendung von Anschlußlitzen gewährleistet ist.For the sake of clarity, the electrical connections of the converter 11 are omitted. There can be leads through the cover 58 or passages provided laterally in the wall of the connecting piece 51. These connections are to be designed in such a way that they in turn cannot cause any significant structure-borne noise transmission, which is ensured, for example, by the use of connecting strands.
Die erfindungsgemäße Halterung des Wandlers 11 ist derart, daß Vorteile gegenüber einer in einer älteren Patentanmeldung P 38 32 947 (= GR 88 P 1653) beschriebenen Halterung eines Ultraschallwandlers erzielt sind. Mit der Erfindung ist ein Optimum einer schallisolierten Halterung mit einer linienhaften Pressung des O-Ringes 54 erreicht, wobei die Pressung auf den vorgesehenen zylinderförmigen Klemmring 55 zurückgeht. Bei der Erfindung liegt in dem parasitären Schwallweg eine (zweifache) Kanteπauflage mit nur minimalem Flächenkontakt vor. Den eigentlichen gasdichten Abschluß bildet der zusätzliche Dichtring 57, der beim Anschrauben des Deckels 58 in die Nut 57 gepresst wird und für dauerhaft zuverlässige Abdichtung sorgt.The holder of the transducer 11 according to the invention is such that advantages over an holder of an ultrasonic transducer described in an earlier patent application P 38 32 947 (= GR 88 P 1653) are achieved. With the invention, an optimum of a sound-insulated holder with a linear pressure of the O-ring 54 is achieved, the pressure going back to the provided cylindrical clamping ring 55. In the invention, there is a (double) edge support with only minimal surface contact in the parasitic surge path. The actual gas-tight seal is formed by the additional sealing ring 57, which is pressed into the groove 57 when the cover 58 is screwed on and ensures a permanently reliable seal.
Mit den erfindungsgemäßen Maßnahmen läßt sich ein Körperschall¬ pegel kleiner als -140 dB erreichen, der im Rauschen des Empfangssignals untergeht. Mit der Erfindung ist ein gasdichter Aufbau mit dennoch hoher akustischer Entkopplung und trotzαem exakt definierte Wandlerpositionierung erreicht.With the measures according to the invention, a structure-borne noise level of less than -140 dB can be achieved, which is lost in the noise of the received signal. The invention achieves a gas-tight construction with nevertheless high acoustic decoupling and despite exactly defined transducer positioning.
Die anspruchsgemäße Zuordnung der Stufe 52 und des Ringes 55 zum Stutzen und der Nut 56 zum Wandlerkörper kann auch ver¬ tauscht sein, jedoch ist die erstere Anordnung an sich zu be¬ vorzugen.The correct assignment of level 52 and ring 55 for the socket and the groove 56 for the transducer body can also be interchanged, but the former arrangement per se is preferred.
Eine Weiterbildung der Erfindung besteht darin, noch einen zweiten O-Ring 154 aus dauerelastischem Material vorzusehen, nämlich in einem Bereich nahe der schallabstrahlenden Frontflä¬ chen des Wandlers 3. Dieser Ring 154 dient vorzugsweise dazu, den Spalt 60 zu verschließen, der zwischen der Außenwand des Wandlers 11 und der ringförmigen Innenfläche des Rohrstutzens 51 zwangsläufig vorhanden ist. Es hat sich nämlich gezeigt, daß sich in diesem Spalt bevorzugt Staub, kleine Partikel und der¬ gleichen absetzen, die in dem durch das Meßrohr 4 hindurch- strömenden Gas mitgeführt werden. Dies wird durch den Ring 154 verhindert, der in die Nut 156 des Wandlers 11 und die Nut 155 der Innenfläche des Stutzens 51 eingesetzt ist. A further development of the invention consists in providing a second O-ring 154 made of permanently elastic material, namely in an area near the sound-radiating front surfaces of the transducer 3. This ring 154 is preferably used to close the gap 60 between the outer wall of the transducer 11 and the annular inner surface of the pipe socket 51 is inevitably present. It has been shown that dust, small particles and the like which settle in the gas flowing through the measuring tube 4 preferentially settle in this gap. This is prevented by the ring 154, which is inserted into the groove 156 of the transducer 11 and the groove 155 of the inner surface of the nozzle 51.

Claims

Patentansprüche Claims
1. Exakt positionierende, schallisolierte Halterung eines Ultraschallwandlers (11) in einem Stutzen (51) eines Ultra¬ schall-Durchflußmessers (Fig. 1) g e k e n n z e i c h n e t d u r c h1. Exactly positioning, sound-insulated holder of an ultrasonic transducer (11) in a connection piece (51) of an ultrasonic flow meter (FIG. 1) g e k e n n z e i c h n e t d u r c h
- einen am Ort der Halterung des Ultraschallwandlers (11) im Stutzen (51) vorgesehenen O-Ring (54) aus dauerlastischem Material,an O-ring (54) made of permanently elastic material provided in the socket (51) at the location of the mounting of the ultrasonic transducer (11),
- der positioniert ist zwischen:- which is positioned between:
- einer Stufe (52) im Innern des Stutzen (51),- a step (52) inside the nozzle (51),
- der Kante eines im Innern des Stutzen (51) und der Stufe (52) axial gegenüberliegend befindlichen Ringes (55) und - einer Nut (56), die sich in der Aussenwand des Wandlers (53) befindet,- the edge of a ring (55) located axially opposite one another in the interior of the connecting piece (51) and the step (52) and - a groove (56) which is located in the outer wall of the transducer (53),
- wobei die Stufe (52) und die Kante des Ringes (55) eine ring¬ förmig umlaufende, unter einem Anpressdruck stehende nur li- nienhafte Berührung mit dem O-Ring (54) haben und - die Nut (57) eine dritte ringförmige Anlage für den O-Ring (54) bildet- The step (52) and the edge of the ring (55) have a ring-shaped circumferential, only under linear contact with the O-ring (54) under pressure, and - The groove (57) has a third ring-shaped contact forms for the O-ring (54)
- und die linienhaften Berührungen und diese Anlage in der Nut (57) nach dem Prinzip einer 3-Puπkt-Halterung zueinander ver¬ teilt sind.- And the linear contacts and this system in the groove (57) are distributed according to the principle of a 3-point bracket.
2. Halterung nach Anspruch 1, g e k e n n z e i c h n e t d u r c h einen O-Ring (54) aus Gummi.2. Holder according to claim 1, g e k e n n z e i c h n e t d u r c h an O-ring (54) made of rubber.
3. Halterung nach Anspruch 1 oder 2, g e k e n n z e i c h n e t d u r c h einen Ring, der ein Klemmring (55) ist.3. Holder according to claim 1 or 2, g e k e n n z e i c h n e t d u r c h a ring which is a clamping ring (55).
4. Halterung nach Anspruch 1, 2 oder 3, g e k e n n z e i c h n e t d u r c h einen Ring (55) als Teil eines Deckels (58) des Stutzen (51).4. Holder according to claim 1, 2 or 3, g e k e n n z e i c h n e t d u r c h a ring (55) as part of a cover (58) of the nozzle (51).
5. Halterung nach einem der Ansprüche 1 bis 4, g e k e n n z e i c h n e t d a d u r c h daß der Stutzen (51) mit einem Deckel (58) verschlossen ist.5. Holder according to one of claims 1 to 4, characterized thereby that the nozzle (51) is closed with a cover (58).
6. Halterung nach Anspruch 5, g e k e n n z e i c h n e t d a d u r c h daß zur Abdeckung von Stutzen (51) und Deckel (58) ein Dicht¬ ring (57) vorgesehen ist.6. Holder according to claim 5, g e k e n n z e i c h n e t d a d u r c h that a sealing ring (57) is provided to cover the nozzle (51) and cover (58).
7. Halterung nach einem der Ansprüche 1 bis 6, g e k e n n z e i c h n e t d a d u r c h daß sich in Nuten (15&, 155) des Wandlers (11) und der Innen¬ fläche des Rohrstutzens (51) ein weiterer O-Ring Q54) aus dauerelastischem Material befindet. 7. Holder according to one of claims 1 to 6, g e k e n n z e i c h n e t d a d u r c h that is in grooves (15 &, 155) of the transducer (11) and the inner surface of the pipe socket (51) another O-ring Q54) made of permanently elastic material.
EP91902149A 1989-12-15 1990-12-13 Soundproofed holding device for an ultrasonic transducer Ceased EP0505482A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3941634 1989-12-15
DE3941634A DE3941634A1 (en) 1989-12-15 1989-12-15 SOUND-INSULATED BRACKET OF AN ULTRASONIC TRANSDUCER

Publications (1)

Publication Number Publication Date
EP0505482A1 true EP0505482A1 (en) 1992-09-30

Family

ID=6395626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91902149A Ceased EP0505482A1 (en) 1989-12-15 1990-12-13 Soundproofed holding device for an ultrasonic transducer

Country Status (8)

Country Link
EP (1) EP0505482A1 (en)
JP (1) JPH05502297A (en)
AU (1) AU7070691A (en)
CA (1) CA2071828A1 (en)
DE (1) DE3941634A1 (en)
FI (1) FI922732A0 (en)
NO (1) NO922333L (en)
WO (1) WO1991009279A1 (en)

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DE59405055D1 (en) * 1994-04-19 1998-02-19 Siemens Ag BRACKET DEVICE FOR ULTRASONIC TRANSDUCERS
DE4413894C2 (en) * 1994-04-21 2002-12-12 Teves Gmbh Alfred Bending converter in pot form
DE4443415A1 (en) * 1994-12-06 1996-06-13 Siemens Ag Device for receiving a sound transducer and ultrasonic flow meter with the same
DE19601570A1 (en) * 1996-01-17 1997-07-24 Siemens Ag Acoustic coupling
DE19723488A1 (en) * 1997-06-05 1998-12-10 Elster Produktion Gmbh Device for attaching an ultrasonic transducer to a measuring device
DE19951874C2 (en) * 1999-10-28 2003-05-22 Krohne Ag Basel Ultrasonic flowmeter
DE102008033098C5 (en) * 2008-07-15 2016-02-18 Krohne Ag ultrasound transducer
DE102010064119A1 (en) 2010-12-23 2012-06-28 Endress + Hauser Flowtec Ag Flowmeter
SG193540A1 (en) 2011-03-23 2013-10-30 Halliburton Energy Serv Inc Ultrasound transducer with acoustic isolator and corresponding mounting method
CN103090915B (en) * 2013-01-21 2015-03-18 大连环岛仪表有限公司 Transducer capable of being directly applied to various ultrasonic flow meters
US10199028B2 (en) 2013-05-21 2019-02-05 Endress + Hauser Flowtec Ag Ultrasonic transducer mounting assembly

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Also Published As

Publication number Publication date
FI922732A0 (en) 1992-06-12
JPH05502297A (en) 1993-04-22
NO922333D0 (en) 1992-06-12
WO1991009279A1 (en) 1991-06-27
NO922333L (en) 1992-06-12
DE3941634A1 (en) 1991-06-20
CA2071828A1 (en) 1991-06-16
AU7070691A (en) 1991-07-18

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