WO2005073690A1 - Vorrichtung zur prüfung mindestens eines qualitätsparameters eines fluids - Google Patents
Vorrichtung zur prüfung mindestens eines qualitätsparameters eines fluids Download PDFInfo
- Publication number
- WO2005073690A1 WO2005073690A1 PCT/EP2004/014725 EP2004014725W WO2005073690A1 WO 2005073690 A1 WO2005073690 A1 WO 2005073690A1 EP 2004014725 W EP2004014725 W EP 2004014725W WO 2005073690 A1 WO2005073690 A1 WO 2005073690A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- working cylinder
- control device
- measuring
- piston
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
- G01N1/2042—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping using a piston actuated by the pressure of the liquid to be sampled
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
Definitions
- the invention relates to a device for testing at least one quality parameter of a fluid in fluid devices, such as working cylinders, hydraulic accumulators, valves, filter housings, pressure hoses, etc.
- the post-published DE 102 47 353 discloses a method for reducing the flow dependency of measuring devices for determining impurities as a statement about the quality of a fluid, in particular of solid contamination in the manner of particles in fluids with a particle counter sensor, particularly after the light blockage - Principle works and which is arranged in a measuring cell of the measuring device, which has a predeterminable inlet cross-section for the fluid flow, the sensor generating a light beam cross-sectional area over which the fluid flow is guided to detect the contamination.
- Particle counter sensors which work according to the light blocking principle, determine the relative proportion of the light beam cross-sectional area (perpendicular to the optical axis), which is covered by the projection of a contamination particle in this plane.
- DE 198 60 169 A1 discloses a method for the qualitative determination of small amounts of water in multicomponent systems in the liquid state, in particular in oil, the method being characterized by repeated repetition of the following process steps: incomplete extraction of water from the multicomponent system by means of an entraining gas ; quantitative determination of the extracted water quantity by measuring the relative humidity in the entraining gas, the entraining gas volume and the temperature; and - Conversion to the amount of water in the multi-component system after determining the multi-component system mass and the saturation vapor density in the trailing gas.
- the known method and the device one is able to measure the absolute saturation concentration of water in fluids, such as hydraulic oil, the parametric determination in question in turn allowing a statement about the quality of the oil.
- DE 101 52 777 A1 discloses a device for determining the quality of a medium, in particular a lubricating and / or cooling oil, with a plurality of sensors which emit an electrical output signal as a function of the respective sensor-specific input variable, one sensor being a temperature sensor, which emits an output signal which is essentially only dependent on the temperature of the medium and in particular is essentially independent of the quality of the medium, and wherein at least one further sensor emits an output signal which is dependent on both the quality of the medium (Fluids) as well as the temperature of the medium.
- the sensors mentioned are in the known solution on a common and arranged in the fluid-immersible substrate, so that the known measuring device can be realized in the smallest installation space.
- the present invention therefore has the task of creating a device that meets the requirements profile mentioned.
- a relevant object is achieved by a device with the features of claim 1 in its entirety.
- the device according to the invention for testing at least one quality parameter for a fluid from fluid devices is characterized in that a predeterminable fluid volume is at least temporarily received in at least one fluid space of the respective fluid device to be tested, which volume after leaving the fluid device by means of a Control device can be stored in a storage device in order to be forwarded from there to a measuring device for determining the respective quality parameter of the fluid to be determined.
- the fluid device manufactured in each case comes to the test, for example in the form of working cylinders, hydraulic accumulators, valves, filter housings, pressure hoses, etc.
- a number of manufacturing steps some of which are of a cutting nature, have usually preceded the functional test, which regularly leads to contamination in the fluid spaces of the leads respective fluid device. Even if no machining has been carried out, soiling occurs, be it in the form of dust or in the form of operating media such as anti-corrosion agents, greases, other hydraulic media, etc.
- the risk involved can be reduced if the fluid medium of the respective fluid device is subjected to the fluid medium of the respective fluid device several times on the test bench in the manner of a rinsing process and then emptied from it again, at least in such a discharge to maintain particle contamination; but even if a very high number of flushing processes is specified here, it cannot be ruled out that, in a special case, contaminants remain in the fluid space, which can then lead to the above-mentioned impairments in the later operation of the fluid device in the hydraulic circuit.
- the invention provides that after the flushing cycle has been completed, the last quantity of fluid introduced is subjected to a more detailed examination by a corresponding measuring device.
- the fluid volume in question can be brought directly to the measuring device for a measurement in the manner of an online measurement if the amount of fluid stored in the fluid space is sufficient for such an online measurement; otherwise, the amount of fluid required for a reliable online measurement can be collected accordingly with the device according to the invention and made available for the measurement.
- the fluid volumes of the fluid spaces are also regularly large, so that in the outlined online measuring method, until the entire fluid volume has been checked, there is inevitably a very long measuring time, with the result that the test bench continues remains occupied by the fluid device and are not used for checking a fluid device to be reinserted in the test stand can.
- the device according to the invention is suitable for those applications where only short test or measurement times are available, the measurement stand itself therefore requires very high measurement cycles and with fluid quantities that deviate from the optimal measurement volume, for example because the fluid quantities used are just very small or very large are.
- Storage device can be moved and from there the fluid to be checked can be passed on to the measuring device, the control device simultaneously permitting a change of the fluid device to be tested in the test bench. Accordingly, the fluid device can be changed while the actual measurement (check) for the previous fluid device is still running.
- the device according to the invention is therefore particularly suitable for checking quality parameters in fluid devices if large fluid volumes are to be checked and / or if for this or other reasons only short measuring times are available. Due to the intelligent design of the control device, preferably designed in microprocessor technology, it is thus possible to test fluid devices with small fluid spaces online or with a predeterminable time offset, whereby the measurement time can be used to achieve the desired exchange within the Test bench.
- Said storage device preferably consists of a working cylinder, in particular in the form of a pneumatic cylinder, which can be connected on the piston side in a fluid-conducting manner via an inlet line to the assignable fluid space of the fluid device by means of the control device, the flow line of the fluid downstream of the working cylinder in a discharge line Measuring device is arranged.
- the storage device has a correspondingly large volume, it is also possible, if necessary, to store a plurality of fluid quantities for a plurality of flushing cycles which are carried out in succession, in order then to call them up for the overall measurement. This allows a statistically improved, reliable evaluation and therefore an overall statement about the quality of the fluid device produced.
- the device according to the invention it is possible in particular to obtain a reliable statement about the contamination situation of the fluid to be checked and consequently about the fluid device, and, if this should be desired, in addition to a determination of the number of (contamination) particles
- statements can also be made about the size, type and speed of the particles in the fluid to be checked, whereby the relevant quality parameter check can be supplemented by further values such as viscosity, temperature, free radicals, pH Values, electrical conductivity of the fluid to be checked etc.
- the device shown as a whole in the figure is used to test at least one quality parameter of a fluid in fluid devices, for example in the form of a hydraulic working cylinder 10.
- a fluid device of this type at least temporarily absorbs a predeterminable volume of fluid in at least one fluid space
- the hydraulic working cylinder 10 has a rod-side fluid space 12 and a piston-side fluid space 14.
- the respective fluid volume is in a storage device after leaving the fluid device, here in the form of the hydraulic working cylinder 10, by means of a control device designated as a whole by 16 can be stored, the storage device 18 being assigned to the fluid space 12 and the additional storage device 20 to the piston-side fluid space 14, which is essentially constructed in the same way as the first storage device 18.
- the flow can be obtained from the respective storage device 18, 20 Forward idvolume to an assignable measuring device 22, 24, which serves to determine the respective quality parameter of the fluid.
- the measuring devices 22, 24 in question also correspond essentially to one another.
- Such a measuring device 22, 24 can be used as described in DE 10247 353.
- the measuring device described in this way implements a method for reducing the flow dependency of the relevant measuring devices for determination of impurities, in particular solid contamination in the manner of particles in fluids with a particle counter sensor, which operates in particular according to the light blocking principle and which is arranged in a measuring cell of the measuring device which has a predeterminable inlet cross section for the fluid flow, the sensor having a light beam cross-sectional area Generated, via which the fluid flow is carried out for the detection of the contamination, the light beam cross-sectional area being chosen to be larger in the direction of the fluid flow than transverse to the point of entry of the contamination into the light beam cross-sectional area.
- the respective storage device 16, 18 consists of a working cylinder, in particular in the form of a pneumatic cylinder of a conventional type, which is fluid-carrying on the piston side via an inlet line 26 and can be assigned to it. Ren fluid space 12, 14 of the fluid device can be connected by means of the control device 16, the respective measuring device 22, 24 being arranged in a drain line 28 in the flow direction of the fluid behind the pneumatic working cylinder.
- the drain line 28 leads from the measuring device 22, 24 via an adjustable throttle 30 to the tank side T of the device.
- the working cylinder of the two storage devices 18, 20 has a piston rod 32 with a continuous fluid guide (not shown), which opens into the respective piston chamber 34 of the working cylinder on one side and into a connecting line 36 on the other side, which is provided by the control device 16 is lockable. In continuation of the connecting line 36, this in turn leads to the tank side T.
- the rod side 38 of the respective working cylinder is connected to a compressed gas source 40, in particular in the form of a compressed air or nitrogen source, which supplies a working pressure of several bar, for example 6 bar.
- a monitoring device 44 as part of the control device 16 with limit switches.
- the control device 16 has switching valves, in particular in the form of 2/2-way switching valves 46, 48, the switching valves 46, 48 being shown in their blocking starting position, as shown in the figure, and each of which shows the fluid path after activation release their other switching position.
- the switching valves 46 and 48 release the fluid-carrying path or block it for the inlet line 26 and the connecting line 36.
- the control device 16 uses the output signals of the monitoring device 44 in the form of the four limit switches according to FIG Representation according to the figure.
- a pressure limiting valve 50 is connected between the latter and the associated switching valve 46 of the control device 16.
- the relevant pressure relief valve 50 in turn leads to the tank side T.
- the hydraulic working cylinder 10 shown in the figure is said to come from production and is being subjected to a more detailed functional test on a test bench (not shown). Since cutting processes are also included in the manufacture of the hydraulic working cylinders in question, it is to be expected that there will be contaminations in the fluid spaces 12, 14 which can also result from residues of cooling lubricant or the like. Before the device is actually used, the hydraulic working cylinder 10 is rinsed, i.e. a fluid is alternately introduced and discharged into the fluid spaces 12, 14, which serves to ensure that the contaminants are discharged from the fluid spaces mentioned.
- the fluid located in the rod-side fluid chamber 12 when the piston is retracted is first subjected to a more detailed check by the assignable measuring device 22.
- the control device 16 opens the switching valve 46 and fluid flows into the first storage device 18 via the feed line 26.
- the switching valve 48 remains closed, the amount of fluid introduced into the feed line 26 can serve to flush the valve 46 as well as the measuring device 22 and the piston chamber 34 of the storage device 18. If the switching valve 48 is closed, fluid under pressure penetrates into the Piston chamber 34, the piston rising up to an upper end position, which is controlled by the monitoring device 44. The fluid now located in the piston chamber 34 is then later to be supplied to the assignable measuring device 22 for the particle detection already described. If there are surprisingly high pressures, the relevant system state is secured by the pressure relief valve 50, which in this respect performs a safety function.
- control device 16 closes the switching valve 46 and by activating the compressed gas source 40, compressed gas reaches the rod side of the pneumatic cylinder and the piston 42 moves downward in the direction of the figure, the lower end position being assigned to the monitoring device by the assignable end position switch 44 is monitored.
- the measuring device in question is particularly suitable for fluid devices, such as large hydraulic working cylinders 10, which have fluid spaces 12, 14 of volumetric size. Basically, there is also the possibility, depending on the size of the hydraulic working cylinder 10, of introducing a plurality of flushing quantities into the respective storage devices one after the other and then later measuring quality in terms of measurement technology.
- the device according to the invention is therefore particularly suitable for large volume flows and for measuring times that are only available for a short time.
- the storage device 18, 20 is also helpful and during a retracting and extending process of the cylinder the measurement can be carried out online via the measuring device 22 , 24 take place, in which case the respective switching valve 46 in the feed lines 26 is to be actuated.
- the piston 42 of the respective storage device 18, 20 then moves into its respective assignable position, which can be initiated accordingly via the control device.
- the device according to the invention does not need to be limited to use in hydraulic working cylinders, but is basically suitable for any form of fluid devices in which at times a predeterminable amount of fluid or fluid volume is recorded. Further applications are therefore conceivable for hydraulic accumulators, hydraulic valves, filter housings, pressure hoses etc.
- the measurement does not need to be limited to particle evaluation, but depending on the measuring device used, further data can be collected here, such as free radicals in the oil , pH values, electrical conductivity, consistency, viscosity etc.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006549917A JP4949856B2 (ja) | 2004-01-29 | 2004-12-27 | 流体の少なくとも一つの品質パラメータのテスト装置 |
EP04804315A EP1709423A1 (de) | 2004-01-29 | 2004-12-27 | Vorrichtung zur pr fung mindestens eines qualit tsparam eters eines fluids |
KR1020067015469A KR101147033B1 (ko) | 2004-01-29 | 2004-12-27 | 유체의 하나 이상의 특성 변수를 시험하기 위한 장치 |
US10/587,305 US7690245B2 (en) | 2004-01-29 | 2004-12-27 | Device for testing at least one quality parameter of a fluid |
CN2004800411304A CN1906474B (zh) | 2004-01-29 | 2004-12-27 | 用于测试流体的至少一种质量参数的设备 |
HK07104272.4A HK1097907A1 (en) | 2004-01-29 | 2007-04-24 | Device for testing at least one quality parameter of a fluid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004004342A DE102004004342A1 (de) | 2004-01-29 | 2004-01-29 | Vorrichtung zur Prüfung mindestens eines Qualitätsparameters eines Fluids |
DE102004004342.6 | 2004-01-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005073690A1 true WO2005073690A1 (de) | 2005-08-11 |
Family
ID=34801158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/014725 WO2005073690A1 (de) | 2004-01-29 | 2004-12-27 | Vorrichtung zur prüfung mindestens eines qualitätsparameters eines fluids |
Country Status (8)
Country | Link |
---|---|
US (1) | US7690245B2 (de) |
EP (1) | EP1709423A1 (de) |
JP (1) | JP4949856B2 (de) |
KR (1) | KR101147033B1 (de) |
CN (1) | CN1906474B (de) |
DE (1) | DE102004004342A1 (de) |
HK (1) | HK1097907A1 (de) |
WO (1) | WO2005073690A1 (de) |
Cited By (1)
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---|---|---|---|---|
CN105319154A (zh) * | 2015-11-20 | 2016-02-10 | 山东大学 | 地压、水压可控的隧道渗透失稳模型试验装置及试验方法 |
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JP5015077B2 (ja) * | 2008-06-27 | 2012-08-29 | 日立建機株式会社 | 作動油の汚染度検出装置 |
EP2589652A4 (de) * | 2010-07-01 | 2017-04-05 | Kaneka Corporation | Einweg-set für zellkulturen, zellkulturvorrichtung und zellpräparationsverfahren |
CN102221509A (zh) * | 2010-10-27 | 2011-10-19 | 武汉市天虹仪表有限责任公司 | 一种补偿振荡天平测量浓度的方法 |
CN102147276B (zh) * | 2010-12-21 | 2013-06-26 | 李浩宇 | 一种具有化学灌浆流量计的气动单缸双液式化学灌浆泵 |
CN104089654B (zh) * | 2014-07-15 | 2016-08-31 | 徐工集团工程机械股份有限公司 | 一种流体特性在线数据采集方法和系统 |
DE102014110544B3 (de) | 2014-07-25 | 2015-09-24 | Leibniz-Institut Für Analytische Wissenschaften - Isas - E.V. | Vorrichtung zur Entnahme einer Probe und zur Zuführung in ein analytisches Auswertesystem |
US20180291325A1 (en) * | 2015-05-14 | 2018-10-11 | Merck Sharp & Dohme Corp. | In vitro pharmacokinetic-pharmacodynamic device |
DE102016007094B3 (de) * | 2016-06-10 | 2016-12-22 | Qfood Gmbh | Probenentnahmevorrichtung zur Entnahme von Getränkeproben aus einer Getränkeleitung, die ein unter Druck stehendes gashaltiges Getränk enthält |
CN113504148A (zh) * | 2021-07-06 | 2021-10-15 | 辽宁工程技术大学 | 一种煤层瓦斯残存量测定装置及测定方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2441844A1 (de) * | 1974-08-31 | 1976-03-11 | Dornier System Gmbh | Vorrichtung zur entnahme von fluessigkeitsproben |
US4527436A (en) * | 1983-12-06 | 1985-07-09 | Jones Richard W | Apparatus and method for sampling a liquid |
EP0405475A2 (de) * | 1989-06-27 | 1991-01-02 | Sartorius Ag | An eine Prozess- oder Abfülleitung anschliessbares Probenentnahmegerät für Flüssigkeiten |
DD294569A5 (de) * | 1990-04-20 | 1991-10-02 | Adw,Institut Fuer Biotechnologie,De | Anordnung zur bestimmung von analyten in fluessigen medien |
WO1998001750A1 (de) * | 1996-07-09 | 1998-01-15 | Hydac Filtertechnik Gmbh | Vorrichtung zur überwachung von gebrauchseigenschaften von fluiden, insbesondere von druckflüssigkeiten in fluidtechnischen anlagen |
US5736654A (en) * | 1995-11-22 | 1998-04-07 | The Dow Chemical Company | Self-contained on-line sampling apparatus |
FR2792071A1 (fr) * | 1999-04-07 | 2000-10-13 | Elf Exploration Prod | Dispositif de prelevement d'echantillons d'un liquide en circulation dans une canalisation |
DE10059217A1 (de) * | 2000-11-29 | 2002-06-13 | Brand Gmbh & Co Kg | Verfahen zum Abgeben von Flüssigkeitsvolumina sowie Abgabevorrichtung dafür |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE294569C (de) | ||||
JPS49142293U (de) * | 1973-04-05 | 1974-12-07 | ||
US4259291A (en) | 1979-07-13 | 1981-03-31 | Technicon Instruments Corporation | Metering device |
DE3024832A1 (de) * | 1980-07-01 | 1982-01-28 | Hunter Douglas Industries B.V., Rotterdam | Vorrichtung zum herstellen von lamellen fuer eine lamellenjalousie |
US4625571A (en) * | 1981-10-31 | 1986-12-02 | British Petroleum Company | Grab sampler |
JPS60166841A (ja) * | 1984-02-09 | 1985-08-30 | Fuji Electric Corp Res & Dev Ltd | 油中ガス自動分析装置 |
JPS623061A (ja) * | 1985-06-28 | 1987-01-09 | 株式会社東芝 | 回路基板用グリ−ンシ−トの製造方法 |
US4976137A (en) * | 1989-01-06 | 1990-12-11 | Ecolab Inc. | Chemical mixing and dispensing system |
US5172586A (en) * | 1990-10-26 | 1992-12-22 | Atlantic Richfield Company | System and method for determining vapor pressure of liquid compositions |
JP3257850B2 (ja) * | 1993-02-25 | 2002-02-18 | 株式会社日立製作所 | 低圧気中微粒子サンプリングシステム及び微粒子計測システム並びに化学反応装置及びcvd装置及びエッチング装置 |
NO178357C (no) * | 1993-10-12 | 1996-03-06 | Statoil As | Apparatur for bruk ved testing av en skjærkraftpåvirkbar tetningsvæske |
JP2001059799A (ja) * | 1995-10-13 | 2001-03-06 | Takeda Chem Ind Ltd | 定量注入器 |
JP2965937B2 (ja) * | 1997-05-08 | 1999-10-18 | 株式会社 地下計測技術コンサルタント | ボーリング用地層ガス検知方法 |
JPH11304684A (ja) * | 1998-03-17 | 1999-11-05 | L'air Liquide | ガスシリンダの容器弁の評価方法 |
JP2003521688A (ja) * | 2000-01-25 | 2003-07-15 | ザ ステイト オブ オレゴン アクティング バイ アンド スルー ザ ステイト ボード オブ ハイヤー エデュケイション オン ビハーフ オブ ポートランド ステイト ユニヴァーシティ | 分析用のサンプルを濃縮するための方法及び装置 |
JP2001221793A (ja) * | 2000-02-08 | 2001-08-17 | Hitachi Constr Mach Co Ltd | 作動油の汚れ状態診断装置 |
JP2003121429A (ja) * | 2001-10-19 | 2003-04-23 | Mitsubishi Heavy Ind Ltd | 有害物質汚染容器の洗浄判定方法 |
US7104116B2 (en) * | 2003-09-25 | 2006-09-12 | Rockwell Automation Technologies, Inc. | Fluid sensor fixture for dynamic fluid testing |
US7017392B2 (en) * | 2003-11-10 | 2006-03-28 | Caterpillar Inc | System for monitoring dilution |
-
2004
- 2004-01-29 DE DE102004004342A patent/DE102004004342A1/de not_active Withdrawn
- 2004-12-27 KR KR1020067015469A patent/KR101147033B1/ko not_active IP Right Cessation
- 2004-12-27 WO PCT/EP2004/014725 patent/WO2005073690A1/de not_active Application Discontinuation
- 2004-12-27 EP EP04804315A patent/EP1709423A1/de not_active Withdrawn
- 2004-12-27 JP JP2006549917A patent/JP4949856B2/ja not_active Expired - Fee Related
- 2004-12-27 CN CN2004800411304A patent/CN1906474B/zh not_active Expired - Fee Related
- 2004-12-27 US US10/587,305 patent/US7690245B2/en not_active Expired - Fee Related
-
2007
- 2007-04-24 HK HK07104272.4A patent/HK1097907A1/xx not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2441844A1 (de) * | 1974-08-31 | 1976-03-11 | Dornier System Gmbh | Vorrichtung zur entnahme von fluessigkeitsproben |
US4527436A (en) * | 1983-12-06 | 1985-07-09 | Jones Richard W | Apparatus and method for sampling a liquid |
EP0405475A2 (de) * | 1989-06-27 | 1991-01-02 | Sartorius Ag | An eine Prozess- oder Abfülleitung anschliessbares Probenentnahmegerät für Flüssigkeiten |
DD294569A5 (de) * | 1990-04-20 | 1991-10-02 | Adw,Institut Fuer Biotechnologie,De | Anordnung zur bestimmung von analyten in fluessigen medien |
US5736654A (en) * | 1995-11-22 | 1998-04-07 | The Dow Chemical Company | Self-contained on-line sampling apparatus |
WO1998001750A1 (de) * | 1996-07-09 | 1998-01-15 | Hydac Filtertechnik Gmbh | Vorrichtung zur überwachung von gebrauchseigenschaften von fluiden, insbesondere von druckflüssigkeiten in fluidtechnischen anlagen |
FR2792071A1 (fr) * | 1999-04-07 | 2000-10-13 | Elf Exploration Prod | Dispositif de prelevement d'echantillons d'un liquide en circulation dans une canalisation |
DE10059217A1 (de) * | 2000-11-29 | 2002-06-13 | Brand Gmbh & Co Kg | Verfahen zum Abgeben von Flüssigkeitsvolumina sowie Abgabevorrichtung dafür |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105319154A (zh) * | 2015-11-20 | 2016-02-10 | 山东大学 | 地压、水压可控的隧道渗透失稳模型试验装置及试验方法 |
CN105319154B (zh) * | 2015-11-20 | 2018-04-24 | 山东大学 | 地压、水压可控的隧道渗透失稳模型试验装置及试验方法 |
Also Published As
Publication number | Publication date |
---|---|
KR101147033B1 (ko) | 2012-05-17 |
JP2007519907A (ja) | 2007-07-19 |
US20070157743A1 (en) | 2007-07-12 |
HK1097907A1 (en) | 2007-07-06 |
JP4949856B2 (ja) | 2012-06-13 |
CN1906474A (zh) | 2007-01-31 |
US7690245B2 (en) | 2010-04-06 |
CN1906474B (zh) | 2010-04-28 |
EP1709423A1 (de) | 2006-10-11 |
KR20070006735A (ko) | 2007-01-11 |
DE102004004342A1 (de) | 2005-08-18 |
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