WO1994008213A1 - Vorrichtung zur befestigung eines gehäuses - Google Patents
Vorrichtung zur befestigung eines gehäuses Download PDFInfo
- Publication number
- WO1994008213A1 WO1994008213A1 PCT/DE1993/000904 DE9300904W WO9408213A1 WO 1994008213 A1 WO1994008213 A1 WO 1994008213A1 DE 9300904 W DE9300904 W DE 9300904W WO 9408213 A1 WO9408213 A1 WO 9408213A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screw
- housing
- piece
- electronics housing
- net
- Prior art date
Links
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract 3
- 238000007789 sealing Methods 0.000 description 6
- 235000013351 cheese Nutrition 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/40—Clamping arrangements where clamping parts are received in recesses of elements to be connected
- F16B2200/403—Threaded clamping parts
Definitions
- the invention relates to a device for fastening a housing, in particular an electronics housing of a measuring sensor, with a screw-in piece for fastening the measuring sensor in the wall surrounding the measuring medium, a sensor for physically recording the measured value, and a detachable connection , through which the electronics housing with the screw-in unit and in its axially symmetrical position relative to the sensor is fixed and held.
- Housings of this type have the task of enclosing the electronic circuits and electronic connection means of sensors in an insulating and protective manner from the environment. This is necessary because such sensors are used to detect physical properties of process media. For this purpose, the sensors at the measuring location are exposed to a wide variety of harmful environmental influences.
- the sensors are physical
- Transducers with the help of physical properties of process media, e.g. B. level, pressure, temperature, etc. can be determined.
- Such a transducer can, for. B. a capacitive probe, a vibration limit switch, a pressure, temperature sensor, or other sensor.
- these measuring sensors have, in addition to the means for physically recording the measured value, also electrical means with which the physical measured value is converted into an electrical signal.
- the electrical means are implemented as an electronic circuit on a circuit board. Is it z. B. in the transducer around a vibration limit switch, the sensor of which is used for the detection and / or monitoring of the fill level of containers, the electronics housing encloses further electronic circuits, the task of which is to excite the sensor to vibrate. But also the connecting means for the electrical connecting lines, with which the sensor receives the electrical energy necessary for its function and that electrical measuring signal is transmitted to an evaluation device located at a distance from the measuring location, or to an actuator, are enclosed by the electronics housing.
- connection between the electronics housing and the screw-in piece is at least dustproof and splashproof. Why the connection between these parts is of particular importance for maintaining the functional safety of such sensors.
- the electronics housing In spite of the necessary installation position in accordance with the connecting lines or other, despite the function of the sensor and the sealing against the container wall Relationships must be aligned axially symmetrically. It is therefore customary to design the electronics housing in such a way that it is rotatably fastened to the screw-in piece by a certain axial angle and can be fixed again in a position which is favorable for the connection of the connecting lines.
- a capacitive probe is known from DE-AS 27 44 864, in particular FIGS. 1, 2 and 3, which consists of the parts of the probe rod as a sensor, a screw-in piece for fastening the probe in a container wall and the electronics housing.
- the housing For releasable connection of the housing are on arranged three symmetrically distributed threaded bolts, which form a detachable connection between the electronics housing and the screw-in piece, including a seal and a clamping ring, by means of nuts.
- a capacitive probe is also known from GB-AS 15 18 818, in particular FIG. 4, in which cylinder screws and threaded bores form the detachable connection for the detachable connection between the electronics housing and the screw-in piece instead of stud bolts and nuts.
- connections between the electronics housing and screw-in piece are known in practice, in which the electronics housing can be rotated steplessly by almost 360 ° around its axis of symmetry, without the electronic circuits having to be closed or a screw connection having to be loosened .
- a connection again has the disadvantage that the position of the housing in relation to the sensor cannot be fixed, ie it can still be rotated even after the connection lines have been connected, which can very easily lead to damage to the connection lines.
- the object of the invention is to propose a dust and splash-proof detachable connection between the electronics housing and screw-in piece, in which the electronics housing is also rotated axially steplessly almost 360 ° around its axis of symmetry, but fixed in any position to the screw-in piece and can be easily solved and locked again.
- the proposed solution ensures that the electronic circuits arranged in the interior of the electronics housing are fixed in their position even when the housing is rotated.
- Fig. 1 The representation of a level measuring device, in which the invention is applied.
- Fig. 2 shows a section through the device.
- Fig. 3 shows a section through and the top view of the clamping disc, which in the invention for
- FIG. 1 shows a sensor 1 which, for example, is intended to be a level measuring device for measuring and / or monitoring the level of a container which is not shown.
- the fill level measuring device 1 is arranged in the wall of the container in such a way that it can come into contact with the measuring medium if it has reached a certain level.
- the fill level measuring device 1 is formed from the sensor 2, the screw-in piece 3 and the electronics housing 4.
- the screw-in piece 3 has a thread 31 and a hexagon 32.
- the hexagon 32 serves to introduce a torque with the aid of which the fill level measuring device 1 with the thread 32 is screwed into a threaded hole penetrating the container wall.
- the screw-in piece 3 is supported for sealing the threaded bore
- the sensor 2 and thus the vibrating rods 21, 22 are excited in opposite senses by a first excitation circuit enclosed by the electronics housing 4.
- the oscillating frequency of the vibrating rods 21, 22 and thus of the sensor changes.
- the fill level measuring device 1 has a further circuit 5, which is also located in the electronics housing 4.
- the connecting lines are inserted into the housing 4 via the PG screw connection 41.
- connection of the connecting lines in the electronics housing 4 is very difficult because the electronics housing 4 assumes a position in which the insertion and connection means are very difficult to access. This difficulty can be determined by the permanently installed lines, but also by other cramped conditions at the measuring location.
- the connection between the screw-in piece 3 and the electronics housing 4 must be designed so that the electronics housing 4 can change its position axially so that the housing assumes a position in which an easy connection of the connecting lines is possible.
- FIG. 2 shows a partial section through the screw-in piece 3 and the electronics housing 4.
- the tubular pin 34 adjoins the hexagon 32.
- the pin 34 is not of constant diameter, but two short sections 35, 36 of smaller diameter are formed.
- a sleeve 43 is formed on the bottom 42 of the housing 4 for fastening the housing 4 with the screw-in piece 3 and for arranging the connecting lines between the sensor and the electronic circuit.
- the pin 34 penetrates the sleeve 43 completely and protrudes a little further into the interior 44 of the housing 4.
- the short sections 35, 36 of smaller diameter form two grooves.
- An annular sealing ring is arranged in the groove 35 and seals the interior space 44 of the housing 4 in a dustproof and splashproof manner from the environment.
- the electrical circuits 6 of the fill level measuring device 1 are formed on the circuit board 61 by electronic components and connecting lines, not shown.
- the circuits 6 are enclosed by the insulating body 62 for the electrical insulation.
- the insulating body 62 does not completely penetrate the interior 44 of the housing 4, but leaves a space 45 free from the base of a circular section.
- an insulating bush 63 protrudes, which encloses the inner electrical connections between the sensor 2 and the electrical circuits 6 in an insulating manner.
- the detachable connection between screw-in piece 3 and electronics housing 4, which can be rotated steplessly through almost 360 ° and can be fixed in any position, is formed by a single easily accessible socket head screw 46.
- the cheese head screw 46 penetrates a clamping ring 47. In the inserted state, the clamping ring 47 assumes a position in which it is penetrated by the pins 34 and is supported in the groove 36 of the pin 34.
- FIG. 3 shows a section through and the top view of the clamping ring 47.
- the clamping ring 47 is approximately elliptical and is pierced by an opening 48.
- the opening 48 is not circular, however, but extends somewhat more in the longitudinal direction of the clamping ring 47.
- a collar 49 runs around the clamping ring 47, but not completely, but ends in a holding plate 50.
- the holding plate 50 occupies a position in which it extends at a short distance from the floor 51, parallel to the latter.
- the holding plate 50 is pierced by a threaded bore 52.
- Two projections 53, 54 protrude into the opening 48. They form the detents with which the housing 4 is fixed in its position.
- a driver 55 is also integrally formed on the clamping ring 47.
- the catch 55 penetrates, enclosed by an elastic stopper 56, a holder 64 formed on the bottom of the insulating body 62.
- the easily accessible cheese head screw 46 is now screwed further into the threaded bore 52.
- the cap screw 46 is supported on the bottom of the support hole 57.
- the cheese head screw 46 lifts the holding plate 50 of the clamping ring 47.
- the clamping ring 47 pivots about the pivot 58.
- the pivotal movement can be continued until the projections 53, 54 are supported on the annular wall surface of the groove 36 facing the interior 44.
- the different lever arms between the fulcrum 58 and the projections 53, 54 on the one hand and between the projections 53, 54 and the cheese head screw 46 on the other hand causes a clamp connection between the projections 53, 54 and the wall of the groove 36, which the electronics housing 4 in determines its position in a stable manner.
- the electronic circuit can also be installed in the interior 44 by inserting the complete insulating body 62. This can happen because the single connection screw 46 of the detachable connection is easily accessible through the space 45 at all times despite the electronic circuit 6 being introduced.
- the insulating body 62 assumes a position in which the driver 55 of the clamping disk 47 including the elastic pin 56 penetrates the holder 64. The result of this is that with every rotational movement of the housing 4 about its axis of symmetry, the insulating body also is held in position by 62, so that damage to the inner connecting lines existing between the sensor 2 and the electronic circuit 6 is excluded by the axial rotary movement of the electronics housing 4.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93920655A EP0615611B1 (de) | 1992-10-05 | 1993-09-21 | Vorrichtung zur befestigung eines gehäuses |
DE59302518T DE59302518D1 (de) | 1992-10-05 | 1993-09-21 | Vorrichtung zur befestigung eines gehäuses |
US08/244,596 US5440455A (en) | 1992-10-05 | 1993-09-21 | Device for fastening a housing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4233315A DE4233315C2 (de) | 1992-10-05 | 1992-10-05 | Vorrichtung zur Befestigung eines Gehäuses |
DEP4233315.6 | 1992-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994008213A1 true WO1994008213A1 (de) | 1994-04-14 |
Family
ID=6469578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1993/000904 WO1994008213A1 (de) | 1992-10-05 | 1993-09-21 | Vorrichtung zur befestigung eines gehäuses |
Country Status (5)
Country | Link |
---|---|
US (1) | US5440455A (de) |
EP (1) | EP0615611B1 (de) |
JP (1) | JP2537025B2 (de) |
DE (2) | DE4233315C2 (de) |
WO (1) | WO1994008213A1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19532330A1 (de) * | 1995-09-01 | 1997-03-06 | Teves Gmbh Alfred | Sensor-Haltebaugruppe, insbesondere für Drehzahlsensoren |
DE29619628U1 (de) * | 1995-11-30 | 1997-04-10 | Hiss, Eckart, Dr., 24105 Kiel | Strömungsüberwachungsgerät |
US6050764A (en) * | 1996-10-23 | 2000-04-18 | Endress + Hauser Gmbh + Co. | Measuring device having a cylindrical connection piece and a fastening collar therearound |
DE19643751A1 (de) * | 1996-10-23 | 1998-05-07 | Endress Hauser Gmbh Co | Meßgerät |
US6148681A (en) * | 1997-01-06 | 2000-11-21 | Rosemount Inc. | Level probe with modular connection |
US5955684A (en) * | 1997-01-06 | 1999-09-21 | Rosemount Inc. | Modular probe |
DE19715556B4 (de) * | 1997-04-15 | 2012-05-10 | Gm Global Technology Operations Llc (N.D.Ges.D. Staates Delaware) | Anordnung eines Sensorgehäuses an einer Wand |
DE19724309B4 (de) * | 1997-06-10 | 2007-01-18 | Ifm Electronic Gmbh | Sensorgehäuse mit Prozeßanschluß |
DE19811970C2 (de) * | 1998-03-19 | 2000-05-18 | Klaus Kobold | Meßanzeigevorrichtung |
DE29804930U1 (de) * | 1998-03-19 | 1998-07-02 | Kobold, Klaus, Antwerpen | Meßanzeigevorrichtung |
DE10124678A1 (de) * | 2001-05-18 | 2002-11-21 | Endress & Hauser Gmbh & Co Kg | Prozeßanschluß |
US20030019650A1 (en) * | 2001-05-18 | 2003-01-30 | Robert Schmidt | Process adapter |
WO2005059475A2 (de) * | 2003-12-18 | 2005-06-30 | Endress+Hauser Gmbh+Co. Kg | Messvorrichtung mit mechanisch schwingfähiger einheit sowie verfahren und vorrichtung zu deren herstellung |
US7467548B2 (en) * | 2005-10-14 | 2008-12-23 | Rosemount Tank Radar Ab | Radar level gauge system and coupling |
DE202009008646U1 (de) * | 2009-06-22 | 2010-11-04 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt | Elektromotorischer Verstellantrieb für ein Kraftfahrzeug |
DE102011005113A1 (de) * | 2011-03-04 | 2012-09-06 | Zf Friedrichshafen Ag | Gehäuse und Abdeckungselement für einen Sensorträger |
USD738760S1 (en) * | 2013-11-05 | 2015-09-15 | Vega Grieshaber Kg | Mounting device for pivotably mounting a fill level radar to a container |
CN103822685B (zh) * | 2014-03-05 | 2017-01-11 | 丹东通博电器(集团)有限公司 | 浮筒液位计调零点装置 |
DK3177119T3 (en) * | 2015-12-01 | 2019-01-14 | Friwo Geraetebau Gmbh | Waterproof housing, power supply and mounting procedure |
DE202017101790U1 (de) * | 2017-03-28 | 2017-04-20 | Endress+Hauser Gmbh+Co. Kg | Feldgerät der Automatisierungstechnik |
US20240175741A1 (en) * | 2021-08-04 | 2024-05-30 | Abb Schweiz Ag | Assemblies, circuits, and methods of transmitters between different equipment protection levels in a hazardous environment |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2448205B1 (de) * | 1974-10-09 | 1975-12-18 | Endress Hauser Gmbh Co | Kapazitive Sonde |
FR2405469A1 (fr) * | 1977-10-05 | 1979-05-04 | Endress Hauser Gmbh Co | Dispositif de fixation d'une sonde dans une ouverture d'un recipient |
DE3337481A1 (de) * | 1983-10-14 | 1985-04-25 | VEGA Grieshaber GmbH & Co, 7620 Wolfach | Explosionsgeschuetzte vorrichtung fuer die kapazitive fuellstandsmessung |
US4574328A (en) * | 1982-06-04 | 1986-03-04 | Endress U. Hauser Gmbh U. Co. | Sensor for capacitively measuring the level of material in a container |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1140352B (de) * | 1956-12-22 | 1962-11-29 | Elima G M B H Elek Sche Messin | Mit einem vorderen Flansch entweder als Einbaugeraet auf einem Traeger oder als Aufbaugeraet in einem an dem Traeger zu halternden Gehaeuse loesbar auf dessen Rand zu befestigendes Messinstrument |
DE7023877U (de) * | 1970-06-25 | 1970-09-24 | Neugebauer G | Manometer thermometer und dgl. fuer messgeraetetafel-einbau |
DE2330679A1 (de) * | 1973-06-16 | 1975-03-20 | Bosch Gmbh Robert | Befestigungsvorrichtung fuer sensoren in abgaskanaelen |
DE3262465D1 (en) * | 1982-01-19 | 1985-03-28 | Gegauf Fritz Ag | Sewing machine thread nipping and cutting device |
US5230422A (en) * | 1990-11-05 | 1993-07-27 | Allen-Bradley Company, Inc. | Operator/cartridge assembly |
US5146056A (en) * | 1991-04-29 | 1992-09-08 | Kuczynski Robert A | Snap-in bracket for circuit breaker |
US5359497A (en) * | 1993-05-10 | 1994-10-25 | Regents Of The University Of California | Planar triode pulser socket |
-
1992
- 1992-10-05 DE DE4233315A patent/DE4233315C2/de not_active Expired - Fee Related
-
1993
- 1993-09-21 DE DE59302518T patent/DE59302518D1/de not_active Expired - Fee Related
- 1993-09-21 EP EP93920655A patent/EP0615611B1/de not_active Expired - Lifetime
- 1993-09-21 US US08/244,596 patent/US5440455A/en not_active Expired - Lifetime
- 1993-09-21 JP JP6508576A patent/JP2537025B2/ja not_active Expired - Lifetime
- 1993-09-21 WO PCT/DE1993/000904 patent/WO1994008213A1/de active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2448205B1 (de) * | 1974-10-09 | 1975-12-18 | Endress Hauser Gmbh Co | Kapazitive Sonde |
FR2405469A1 (fr) * | 1977-10-05 | 1979-05-04 | Endress Hauser Gmbh Co | Dispositif de fixation d'une sonde dans une ouverture d'un recipient |
US4574328A (en) * | 1982-06-04 | 1986-03-04 | Endress U. Hauser Gmbh U. Co. | Sensor for capacitively measuring the level of material in a container |
DE3337481A1 (de) * | 1983-10-14 | 1985-04-25 | VEGA Grieshaber GmbH & Co, 7620 Wolfach | Explosionsgeschuetzte vorrichtung fuer die kapazitive fuellstandsmessung |
Also Published As
Publication number | Publication date |
---|---|
DE4233315C2 (de) | 1996-07-25 |
DE59302518D1 (de) | 1996-06-13 |
DE4233315A1 (de) | 1994-04-07 |
JPH06511090A (ja) | 1994-12-08 |
EP0615611A1 (de) | 1994-09-21 |
US5440455A (en) | 1995-08-08 |
EP0615611B1 (de) | 1996-05-08 |
JP2537025B2 (ja) | 1996-09-25 |
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