DE10233296A1 - Method for producing a housing for an encapsulated sensor and corresponding housing - Google Patents
Method for producing a housing for an encapsulated sensor and corresponding housing Download PDFInfo
- Publication number
- DE10233296A1 DE10233296A1 DE2002133296 DE10233296A DE10233296A1 DE 10233296 A1 DE10233296 A1 DE 10233296A1 DE 2002133296 DE2002133296 DE 2002133296 DE 10233296 A DE10233296 A DE 10233296A DE 10233296 A1 DE10233296 A1 DE 10233296A1
- Authority
- DE
- Germany
- Prior art keywords
- housing
- sensor
- pot
- cover
- compound
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
- G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves for discrete levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2968—Transducers specially adapted for acoustic level indicators
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Gehäuses (3) für einen gekapselten Sensor (16). Das Gehäuse (3) ist zweiteilig und besteht aus einem Gehäusetopf (1) und einem Gehäusedeckel (2). In dem Gehäusetopf (1) wird eine definierte flüssige Vergußmasse (13) eingefüllt; der Gehäusedeckel (2) wird auf dem Gehäusetopf (1) so befestigt, daß zumindest der untere Randbereich (17) des Gehäusedeckels (2) in die Vergußmasse (13) eintaucht. Anschließend wird das Gehäuse (3) in eine Schräglage gebracht, so daß die Längsachse (4) des Gehäuses (3) in einem spitzen Winkel gegen die Normale (5) ausgerichtet ist. In dieser Schräglage wird das Gehäuse (3) in eine Rotationsbewegung versetzt.The invention relates to a method for producing a housing (3) for an encapsulated sensor (16). The housing (3) is in two parts and consists of a housing pot (1) and a housing cover (2). A defined liquid potting compound (13) is filled into the housing pot (1); the housing cover (2) is attached to the housing pot (1) in such a way that at least the lower edge region (17) of the housing cover (2) is immersed in the sealing compound (13). Then the housing (3) is brought into an inclined position so that the longitudinal axis (4) of the housing (3) is aligned at an acute angle to the normal (5). In this inclined position, the housing (3) is rotated.
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Gehäuses für einen gekapselten Sensor. Desweiteren bezieht sich die Erfindung auf ein Gehäuse bzw. auf einen gekapselten Sensor. Das Gehäuse ist zweiteilig ausgestaltet und weist einen Gehäusetopf und einen Gehäusedeckel auf. Das Gehäuse ist nach dem erfindungsgemäßen Verfahren gefertigt.The invention relates to a Method for manufacturing an encapsulated sensor housing. Furthermore, the invention relates to a housing or on an encapsulated sensor. The housing is designed in two parts and has a housing pot and a housing cover on. The housing is according to the inventive method manufactured.
Von der Anmelderin werden unter den Bezeichnungen Liquiphant FTL260 und Liquiphant FTL20 gekapselte Grenzstanddetektoren angeboten und vertrieben. Um die gewünschte Kapselung der Sensoren zu erreichen, wird nach der Montage der Antriebs-/Empfangseinheit und des Elektronikteils eine vorgegebene Menge einer flüssigen Vergußmasse in den Gehäusetopf eingefüllt. Anschließend wird der Deckel bzw. der Verschlußstopfen des Gehäuses in die noch flüssige Vergußmasse eingepreßt. Die Menge an Vergußmassse ist so bestimmt, daß bei Fertigstellung des gekapselten Sensors die Elektronikteile komplett in die Vergußmasse eingelassen sind und daß nur noch die Anschlüsse aus der Vergußmasse herausragen. Um sicherzustellen, daß in der Vergußmasse befindliche Gasblasen während der Trockenphase nach außen entweichen können, sind im Randbereich des Deckels Aussparungen vorgesehen. Ohne diese Maßnahme besteht die Gefahr, daß sich in dem Gehäuse ein Überdruck aufbaut, der zu dem höchst unenrwünschten Effekt führen könnte, daß Vergußmasse aus dem Gehäuse herausgepreßt wird.From the applicant are among the Designations Liquiphant FTL260 and Liquiphant FTL20 encapsulated Point level detectors offered and sold. To the desired encapsulation of the sensors is achieved after installing the drive / receiver unit and the electronic part a predetermined amount of a liquid potting compound in the housing pot filled. Then will the lid or the plug of the housing into the still fluid sealing compound pressed. The amount of potting compound is determined so that at Completion of the encapsulated sensor complete the electronic parts into the sealing compound are admitted and that only nor the connections from the sealing compound protrude. To make sure that there is any in the potting compound Gas bubbles during the Dry phase to the outside are able to escape Recesses are provided in the edge area of the cover. Without this measure the risk that in the housing an overpressure builds up to the highest unenrwünschten Effect could that potting compound the housing is pressed out.
Neben der Kapselung dient die Vergußmasse dazu, die Elektronikteile, insbesondere die Leiterplatten und die Antriebs-/Empfangseinheit des Sensors in dem Gehäuse zu fixieren. Nach dem Abkühlungs- und Trocknungsprozeß sind die Elektronikteile rüttelfest in der Vergußmasse des Gehäuses eingebettet.In addition to the encapsulation, the potting compound serves the electronic parts, especially the circuit boards and the drive / receiver unit of the sensor in the housing to fix. After cooling and drying process the electronic parts are vibration-proof in the sealing compound of the housing embedded.
Der Nachteil des bekannten Herstellungsverfahrens ist darin zu sehen, daß die hermetisch dichte Kapslung des Sensorgehäuses, insbesondere der Verschluß der Aussparungen im Randbereich des Gehäusedeckels, nur über die Kapillarwirkung des Verschlußstopfens bzw. des Gehäusedeckels erzielt wird. Damit reagiert dieses Herstellungsverfahren empfindlich auf Schwankungen in der Füllhöhe der Vergußmasse. Im ungünstigen Fall kann dies dazu führen, daß die Aussparungen nur unzureichend mit Vergußmasse benetzt werden. Damit ist eine hermetische Abdichtung des Gehäuses nicht mehr erreichbar.The disadvantage of the known manufacturing process can be seen in the fact that hermetically sealed encapsulation of the sensor housing, in particular the closure of the cutouts in the edge area of the housing cover, only over the capillary action of the sealing plug or the housing cover is achieved. This means that this manufacturing process is sensitive for fluctuations in the fill level of the sealing compound. In a bad way Case this can cause that the Recesses are insufficiently wetted with potting compound. In order to hermetic sealing of the housing is no longer achievable.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung eines hermetisch dichten Sensorgehäuses vorzuschlagen. Desweiteren schlägt die Erfindung ein hermetisch dichtes Gehäuse für einen Sensor vor.The invention is based on the object To propose a method for producing a hermetically sealed sensor housing. Furthermore strikes the invention provides a hermetically sealed housing for a sensor.
Die Aufgabe wird dadurch gelöst, daß in den Gehäusetopf eine definierte flüssige Vergußmasse eingefüllt wird, daß der Gehäusedeckel auf dem Gehäusetopf befestigt wird, so daß zumindest der untere Randbereich des Gehäusedeckels in die Vergußmasse eintaucht, daß das Gehäuse in eine Schräglage gebracht wird, so daß die Längsachse des Gehäuses in einem spitzen Winkel gegen die Normale ausgerichtet ist, und daß das Gehäuse in der Schräglage in eine Rotationsbewegung versetzt wird.The object is achieved in that in the housing pot a defined fluid Potting compound is filled, that the housing cover on the housing pot is attached so that at least the lower edge area of the housing cover into the sealing compound dives that the casing in an inclined position brought so that the longitudinal axis of the housing is oriented at an acute angle to the normal, and that this casing in the inclined position in a rotational movement is offset.
Gemäß einer bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens wird die Längsachse des Gehäuses in einen Winkel von 30° zur Normalen gebracht. Zwecks Aushärtung der Vergußmasse wird die Längsachse anschließend wieder parallel zur Normalen ausgerichtet.According to a preferred embodiment of the inventive method becomes the longitudinal axis of the housing at an angle of 30 ° to the normal brought. For curing the sealing compound becomes the longitudinal axis subsequently again aligned parallel to the normal.
Weiterhin wird die Aufgabe durch ein Gehäuse für einen gekapselten Sensor gelöst, der nach dem erfindungsgemäßen Verfahren hergestellt ist. Bevorzugt handelt es sich bei dem Sensor um einen Grenzstanddetektor zur Erkennung und/oder Überwachung des Füllstands eines Mediums in einem Behälter.The task continues through a housing for one encapsulated sensor released, that according to the inventive method is made. The sensor is preferably a point level detector for detection and / or monitoring the level of a medium in a container.
Gemäß einer vorteilhaften Ausgestaltung umschließt die Vergußmasse den Elektronikteil zumindest teilweise. Insbesondere handelt es sich bei der Vergußmasse um Sil-Gel.According to an advantageous embodiment, the potting compound encloses the Electronics part at least partially. In particular it is with the sealing compound about Sil-Gel.
Eine vorteilhafte Weiterbildung des erfindungsgemäßen Gehäuses sieht in dem unteren Randbereich des Gehäusedeckels zumindest eine Aussparung vor.An advantageous development of the housing according to the invention sees at least one recess in the lower edge region of the housing cover in front.
Die Erfindung wird anhand der nachfolgenden Zeichnungen näher erläutert. Es zeigt:The invention is based on the following Drawings closer explained. It shows:
Bei dem Sensor
Der Sensor
Das Gehäuse
Die Membran
Bei der Empfangseinheit kann es sich
beispielsweise ebenso wie bei der Antriebseinheit um ein einziges
Piezoelement handeln. Die Antriebs- /Empfangseinheit
Aufgrund dieses Schwingungsverhaltens des
piezo-elektrischen Elements bewirkt die Spannungsdifferenz ein Durchbiegen
der in das Gehäuse
Der Elektronikteil
Im unteren Randbereich des Gehäusedeckels
- 11
- Gehäusetopfhousing pot
- 22
- Gehäusedeckelhousing cover
- 33
- Gehäusecasing
- 44
- Längsachselongitudinal axis
- 55
- Normalenormal
- 66
- Schwinggabeltuning fork
- 77
- Membranmembrane
- 88th
- Antriebs-/EmpfangseinheitDriver / receiver unit
- 99
- Elektronikteilelectronics part
- 1010
- Steckkontakteplug contacts
- 1111
- Platinecircuit board
- 1212
- Aussparungrecess
- 1313
- Vergußmassesealing compound
- 1414
- Anschlußkontaktconnection contact
- 1515
- Führungsstiftguide pin
- 1616
- Sensorsensor
- 1717
- Randbereichborder area
- 1818
- Gewindethread
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002133296 DE10233296A1 (en) | 2002-07-22 | 2002-07-22 | Method for producing a housing for an encapsulated sensor and corresponding housing |
AU2003250101A AU2003250101A1 (en) | 2002-07-22 | 2003-07-18 | Method for the production of a housing for an encapsulated sensor and corresponding housing |
PCT/EP2003/007840 WO2004010092A2 (en) | 2002-07-22 | 2003-07-18 | Method for the production of a housing for an encapsulated sensor and corresponding housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002133296 DE10233296A1 (en) | 2002-07-22 | 2002-07-22 | Method for producing a housing for an encapsulated sensor and corresponding housing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10233296A1 true DE10233296A1 (en) | 2004-02-12 |
Family
ID=30128240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002133296 Withdrawn DE10233296A1 (en) | 2002-07-22 | 2002-07-22 | Method for producing a housing for an encapsulated sensor and corresponding housing |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003250101A1 (en) |
DE (1) | DE10233296A1 (en) |
WO (1) | WO2004010092A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005059662A1 (en) * | 2005-12-12 | 2007-06-14 | Endress + Hauser Gmbh + Co. Kg | Sensor unit monitoring process variable comprises single-piece chamber housing sensor, electronics, partition and connections assembly, behind removable cover |
EP2642255A2 (en) | 2012-03-22 | 2013-09-25 | Krohne Messtechnik GmbH | Measuring apparatus |
DE102020118473B4 (en) | 2019-08-08 | 2024-04-11 | Vega Grieshaber Kg | Drive for a vibration sensor, vibration sensor and use of gels as a drive element in vibration sensors |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3170969A1 (en) | 2015-11-17 | 2017-05-24 | Services Pétroliers Schlumberger | Encapsulated sensors and electronics |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4311963A1 (en) * | 1993-04-10 | 1994-10-13 | Endress Hauser Gmbh Co | Level measuring device |
DE4314844A1 (en) * | 1993-05-05 | 1994-11-10 | Clean Autec Ges Fuer Umwelt & | Pressure measuring device with a resistance measuring bridge |
DE4340177A1 (en) * | 1993-11-25 | 1995-06-01 | Mannesmann Kienzle Gmbh | Sensor |
DE4405438A1 (en) * | 1994-02-21 | 1995-08-24 | Vdo Schindling | Rotation sensor for vehicle antilock braking system |
EP0539555B1 (en) * | 1991-05-06 | 1996-04-10 | Sensonor A.S. | Arrangement for encasing a functional device, and a process for the production of same |
DE19504608A1 (en) * | 1995-02-11 | 1996-08-14 | Balluff Gebhard Feinmech | Process to produce position sensor |
DE19538696A1 (en) * | 1995-10-17 | 1997-04-24 | Endress Hauser Gmbh Co | Arrangement for monitoring a predetermined fill level of a liquid in a container |
DE4407810C2 (en) * | 1994-03-09 | 1998-02-26 | Semikron Elektronik Gmbh | Circuit arrangement (module) |
DE19929754C2 (en) * | 1999-06-29 | 2001-08-16 | Siemens Ag | Potting an assembled component with vibration-damping casting compound |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0766072B1 (en) * | 1995-09-28 | 1999-12-22 | Endress + Hauser GmbH + Co. | Electronic casing |
DE19546865C1 (en) * | 1995-12-15 | 1996-10-02 | Vdo Schindling | Magnetic field sensor assembly method |
EP0984248B1 (en) * | 1998-09-02 | 2004-06-09 | Endress + Hauser GmbH + Co. KG | Measurement detector |
-
2002
- 2002-07-22 DE DE2002133296 patent/DE10233296A1/en not_active Withdrawn
-
2003
- 2003-07-18 WO PCT/EP2003/007840 patent/WO2004010092A2/en not_active Application Discontinuation
- 2003-07-18 AU AU2003250101A patent/AU2003250101A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0539555B1 (en) * | 1991-05-06 | 1996-04-10 | Sensonor A.S. | Arrangement for encasing a functional device, and a process for the production of same |
DE4311963A1 (en) * | 1993-04-10 | 1994-10-13 | Endress Hauser Gmbh Co | Level measuring device |
DE4314844A1 (en) * | 1993-05-05 | 1994-11-10 | Clean Autec Ges Fuer Umwelt & | Pressure measuring device with a resistance measuring bridge |
DE4340177A1 (en) * | 1993-11-25 | 1995-06-01 | Mannesmann Kienzle Gmbh | Sensor |
DE4405438A1 (en) * | 1994-02-21 | 1995-08-24 | Vdo Schindling | Rotation sensor for vehicle antilock braking system |
DE4407810C2 (en) * | 1994-03-09 | 1998-02-26 | Semikron Elektronik Gmbh | Circuit arrangement (module) |
DE19504608A1 (en) * | 1995-02-11 | 1996-08-14 | Balluff Gebhard Feinmech | Process to produce position sensor |
DE19538696A1 (en) * | 1995-10-17 | 1997-04-24 | Endress Hauser Gmbh Co | Arrangement for monitoring a predetermined fill level of a liquid in a container |
DE19929754C2 (en) * | 1999-06-29 | 2001-08-16 | Siemens Ag | Potting an assembled component with vibration-damping casting compound |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005059662A1 (en) * | 2005-12-12 | 2007-06-14 | Endress + Hauser Gmbh + Co. Kg | Sensor unit monitoring process variable comprises single-piece chamber housing sensor, electronics, partition and connections assembly, behind removable cover |
EP2642255A2 (en) | 2012-03-22 | 2013-09-25 | Krohne Messtechnik GmbH | Measuring apparatus |
DE102012005637A1 (en) | 2012-03-22 | 2013-09-26 | Krohne Messtechnik Gmbh | gauge |
US9030190B2 (en) | 2012-03-22 | 2015-05-12 | Krohne Messtechnik Gmbh | Measuring device |
DE102012005637B4 (en) | 2012-03-22 | 2019-02-21 | Krohne Messtechnik Gmbh | gauge |
DE102020118473B4 (en) | 2019-08-08 | 2024-04-11 | Vega Grieshaber Kg | Drive for a vibration sensor, vibration sensor and use of gels as a drive element in vibration sensors |
Also Published As
Publication number | Publication date |
---|---|
WO2004010092A3 (en) | 2004-05-13 |
WO2004010092A2 (en) | 2004-01-29 |
AU2003250101A1 (en) | 2004-02-09 |
AU2003250101A8 (en) | 2004-02-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8141 | Disposal/no request for examination |