DE10252652A1 - Apparatus analyzing gas content of transformer-, lubricating-, engine and hydraulic oils or aqueous solutions, comprises mercury-free vacuum pump for degasification - Google Patents
Apparatus analyzing gas content of transformer-, lubricating-, engine and hydraulic oils or aqueous solutions, comprises mercury-free vacuum pump for degasification Download PDFInfo
- Publication number
- DE10252652A1 DE10252652A1 DE10252652A DE10252652A DE10252652A1 DE 10252652 A1 DE10252652 A1 DE 10252652A1 DE 10252652 A DE10252652 A DE 10252652A DE 10252652 A DE10252652 A DE 10252652A DE 10252652 A1 DE10252652 A1 DE 10252652A1
- Authority
- DE
- Germany
- Prior art keywords
- gas
- vessel
- degassing
- vacuum
- fluid samples
- 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.)
- Granted
Links
- 238000007872 degassing Methods 0.000 title claims description 31
- 239000007864 aqueous solution Substances 0.000 title description 2
- 239000010687 lubricating oil Substances 0.000 title description 2
- 239000010705 motor oil Substances 0.000 title description 2
- 239000010720 hydraulic oil Substances 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 23
- 238000004458 analytical method Methods 0.000 claims description 7
- 238000004868 gas analysis Methods 0.000 abstract description 2
- 238000002309 gasification Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 54
- 239000003921 oil Substances 0.000 description 24
- 239000012528 membrane Substances 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 6
- 229910052753 mercury Inorganic materials 0.000 description 6
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Specific substances contained in the oils or fuels
- G01N33/2841—Gas in oils, e.g. hydrogen in insulating oils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0036—Flash degasification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0063—Regulation, control including valves and floats
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
-
- 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
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
- G01N2001/2229—Headspace sampling, i.e. vapour over liquid
-
- 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
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N2001/2267—Sampling from a flowing stream of gas separating gas from liquid, e.g. bubbles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren für die Entgasung von Fluidproben, für die Bestimmung ihres Gesamtgasgehaltes sowie der einzelnen Gaskomponenten, wie es z. B. für die Gas-in-Öl-Analyse erforderlich ist.The invention relates to a device and a procedure for the degassing of fluid samples for which Determination of their total gas content as well as the individual gas components, how it z. B. for the gas-in-oil analysis is required.
Durch Fehlfunktionen wie Überhitzung oder elektrische Entladungen bilden sich in Hochstromgeräten fehlerspezifische Gase wie Wasserstoff, Methan, Ethan, Ethen, Ethin, Propan und Propen, Kohlendioxid und Kohlenmonoxid, die sich in den Transformatorölen lösen. Aus der Art und Menge dieser Gase lassen sich wichtige Rückschlüsse über den Betriebszustand von Hochstromgeräten wie Transformatoren ziehen. Außerdem ist eine Fehlerdiagnostik möglich. [VDEW-Ölbuch Isolierflüssigkeiten, Verlag VWEW, Frankfurt 1996]Due to malfunctions such as overheating or electrical discharges are fault-specific in high-current devices Gases such as hydrogen, methane, ethane, ethene, ethyne, propane and propene, Carbon dioxide and carbon monoxide, which dissolve in the transformer oils. Out The type and amount of these gases allow important conclusions to be drawn about the operating status of high-current devices how to pull transformers. Moreover error diagnosis is possible. [VDEW oil book Insulating liquids, publishing house VWEW, Frankfurt 1996]
Die Bestimmung dieser Gase erfolgt in zwei Schritten: Zuerst werden die im Öl gelösten Gase aus der Probe extrahiert. Das Gasgemisch wird dann in einem zweiten Schritt mit Hilfe der Gaschromatographie in die einzelnen Gase aufgetrennt, identifiziert und quantitativ bestimmt [H. Müller, J. Bachmann: Elektrizitätswirtschaft 92 (93) 809].These gases are determined in two steps: First, the gases dissolved in the oil are extracted from the sample. The gas mixture is then in a second step using the Gas chromatography separated into the individual gases, identified and quantified [H. Miller, J. Bachmann: Electricity industry 92 (93) 809].
Nach geltender Norm wird die Probe in eine Entgasungs-Apparatur (Töpler-Pumpe) eingefüllt, bei der durch Senken eines Quecksilber-Niveaugefäßes ein Vakuum im Ölbehälter erzeugt wird. Die im Öl gelösten Gase werden dabei teilweise freigesetzt und können durch Heben des Quecksilber-Niveaugefäßes in eine Gasbürette überführt werden. Durch mehrmaliges Heben und Senken des Quecksilber-Niveaugefäßes ist eine quantitative Abtrennung der Gase aus der Probe möglich. [DIN EN 60 567] Dieses Verfahren liefert ausgezeichnete Analysenwerte, ist aber wegen der bekannten Gefahren beim Umgang mit Quecksilber nicht mehr zeitgemäß. Außerdem treten erhebliche Probleme bei der mobilen Anwendung am Transformator oder auf Messwagen auf.According to the applicable standard, the sample filled in a degassing apparatus (Töpler pump) in which a vacuum is created in the oil container by lowering a mercury level vessel becomes. The one in the oil dissolved Gases are partially released and can be lifted into one by lifting the mercury level vessel Gas burette to be transferred. By lifting and lowering the mercury level vessel several times quantitative separation of the gases from the sample is possible. [DIN EN 60 567] This method provides excellent analytical values, is because of the known dangers when handling mercury not up to date anymore. Also kick significant problems with the mobile application on the transformer or on measuring car.
Um die Probleme beim Umgang mit Quecksilber
zu vermeiden, wurde eine spezielle Kolben-Zylinder-Einheit vorgeschlagen,
in der die Gase im Vakuum aus der Probe abgetrennt und in einem
Gassammelbehälter
aufgefangen werden [
Deshalb wurde in
Von der Firma Hewlett Packard wurde vorgeschlagen, die in Öl gelösten Gase mit Hilfe der Headspace-Technik abzutrennen [HP Application Note 228-310]. Dieses Verfahren konnte sich allerdings in der Praxis nicht durchsetzen, da keine Übereinstimmung der Analysenwerte mit dem Standardverfahren gefunden werden. Bisher wird den Transformatoren bei laufendem Betrieb nach festen Zeitabständen eine Ölprobe entnommen und im Labor analysiert. Das Analysenergebnis steht erst nach Stunden oder gar Tagen zur Verfügung. Diese Zeitspanne kann bei kritischen Entwicklungen viel zu lang sein. Der konsequente Weg zur Reduzierung der Zeit zwischen den Analysen und der Analysenzeit kann nur die online-Gas-in-Öl-Analytik sein.From the Hewlett Packard company suggested that in oil dissolved Separating gases using headspace technology [HP Application Note 228-310]. However, this procedure could be used in practice do not enforce as there is no match the analytical values are found using the standard procedure. So far an oil sample is taken from the transformers at regular intervals during operation and analyzed in the laboratory. The analysis result is only after hours or even days available. This period of time can be far too long for critical developments his. The consistent way to reduce the time between Analyzes and the analysis time can only be done by online gas-in-oil analysis his.
Für
Messungen direkt am Transformator existieren Varianten zur Abtrennung
der Gase über eine
gasdurchlässige
Membran. Über
diese Gasdiffusionsstrecke werden die im Öl gelösten Gase in eine Gasspeicherkammer,
die mit einem Mehrwegedosierventil mit Probenschleife verbunden
ist, überführt. Mit
Hilfe eines Trägergases
erfolgt der Transport in einen Gaschromatographen [
Dieses Problem wird durch eine Anordnung mit den Merkmalen des Anspruches 1 sowie ein Verfahren mit den Merkmalen des Anspruches 9 gelöst.This problem is dealt with by an arrangement the features of claim 1 and a method with the features of claim 9 solved.
Die Entgasungsvorrichtung besteht
aus einer quecksilberfrei arbeitenden Vakuumpumpe
Es wurde gefunden, dass eine quantitative Entgasung von Ölproben möglich ist, wenn diese in ein Vakuum eindosiert und die freigesetzten Gasbestandteile kontinuierlich abgesaugt und gesammelt werden, nachdem zu Beginn der Analyse ein identisches Vakuum im Evakuierungsgefäß und im Entspannungsgefäß erzeugt worden ist. Zweckmäßig ist, dass ein im Verhältnis zum Volumen der Ölprobe großer Gasaustauschraum zur Verfügung steht. Das Verhältnis der Volumina von Ölprobe zu Gasraum muss mindestens 1 : 3 betragen. Durch die kontinuierliche Gasabsaugung wird erreicht, dass die Gasbestandteile schnell und quantitativ aus dem Öl abgetrennt werden. Dies ist besonders bei den Kohlenwasserstoffen Ethan, Ethen, Ethin, Propan und Propen vorteilhaft. Das erfindungsgemäße Verfahren kann zur Bestimmung von Gasen in Transformatorenölen oder Schmier- und Motorölen, Hydraulikflüssigkeiten sowie auch in wässrigen Lösungen vorteilhaft genutzt werden.It was found that quantitative degassing of oil samples possible is when this is metered into a vacuum and the gas components released be continuously aspirated and collected after beginning the analysis an identical vacuum in the evacuation vessel and in Relaxation vessel created has been. It is useful that one in proportion large gas exchange space to the volume of the oil sample to disposal stands. The relationship the volumes of oil sample to gas space must be at least 1: 3. Through the continuous Gas extraction is achieved that the gas components quickly and quantitatively from the oil be separated. This is particularly the case with hydrocarbons Ethane, ethene, ethyne, propane and propene advantageous. The method according to the invention can for the determination of gases in transformer oils or lubricating and motor oils, hydraulic fluids as well as in aqueous solutions be used to advantage.
Mit Hilfe der vorgeschlagenen Erfindung ist es möglich, Gase in Fluiden entweder vor Ort oder später im Labor sowohl hinsichtlich des Gesamtgasgehaltes als auch der Anteile der einzelnen Gaskomponenten des Fluids zu bestimmen.With the help of the proposed invention Is it possible, Gases in fluids either on site or later in the laboratory both with regard to the total gas content as well as the proportions of the individual gas components to determine the fluid.
Das gesamte freigesetzte Gasvolumen
kann über
die Längenänderung
des Entspannungsgefäßes
Alternativ kann das gesamte freigesetzte Gasvolumen
ermittelt werden, indem vor der Injektion des Öles in das evakuierte Entgasungsgefäß
Ausführungsbeispiel:Embodiment:
Es zeigenShow it
Eine definierte Menge Inertgas kann bei geringen Gehalten an Gas im Fluid zugesetzt werden, um dieses bestimmen zu können.A defined amount of inert gas can at low levels of gas in the fluid can be added to this to be able to determine.
Die Durchführung einer Fluidentgasung
ist in
- 11
- Entgasungsgefäßdegassing vessel
- 22
- Drucksensorpressure sensor
- 33
- Magnetventilmagnetic valve
- 44
- Magnetventilmagnetic valve
- 55
- Magnetventilmagnetic valve
- 66
- Vakuumpumpevacuum pump
- 77
- Entspannungsgefäßflash vessel
- 88th
- Septumanschlussseptum port
- 99
- Gasausganggas output
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10252652.4A DE10252652B4 (en) | 2002-11-11 | 2002-11-11 | Apparatus and method for degassing fluid samples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10252652.4A DE10252652B4 (en) | 2002-11-11 | 2002-11-11 | Apparatus and method for degassing fluid samples |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE10252652A1 true DE10252652A1 (en) | 2004-05-19 |
| DE10252652B4 DE10252652B4 (en) | 2021-09-02 |
Family
ID=32115466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10252652.4A Expired - Lifetime DE10252652B4 (en) | 2002-11-11 | 2002-11-11 | Apparatus and method for degassing fluid samples |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10252652B4 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1914546A3 (en) * | 2006-10-19 | 2009-04-22 | IAV GmbH Ingenieurgesellschaft Auto und Verkehr | Method and device for determining the usage properties of a lubricant |
| CN100554919C (en) * | 2007-05-08 | 2009-10-28 | 中国科学院广州地球化学研究所 | The high precision collection device of minimum gas and using method |
| WO2015044516A1 (en) | 2013-09-24 | 2015-04-02 | Vaisala Oyj | Method and system for gas concentration measurement of gas dissolved in liquids |
| CN107525879A (en) * | 2017-09-26 | 2017-12-29 | 国网上海市电力公司 | A kind of method of propane content in measure insulating oil |
| CN107796886A (en) * | 2017-09-26 | 2018-03-13 | 国网上海市电力公司 | A kind of method of propylene content in measure insulating oil |
| CN109253995A (en) * | 2018-10-31 | 2019-01-22 | 中国石油天然气股份有限公司 | A kind of mercury isotope testing method and device for natural gas |
| CN113552017A (en) * | 2021-08-31 | 2021-10-26 | 广东电网有限责任公司 | A device and method for measuring gas content in oil |
| AT523841B1 (en) * | 2020-10-19 | 2021-12-15 | Omicron Electronics Gmbh | Device and method for degassing a device and corresponding test system for gas analysis |
| DE102016118701B4 (en) | 2015-10-12 | 2023-03-23 | GM Global Technology Operations LLC | Method of testing a pressurized liquid for dissolved and/or entrained gases |
| CN118465153A (en) * | 2024-07-09 | 2024-08-09 | 宁波理工环境能源科技股份有限公司 | Degassing device and degassing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409814A (en) | 1981-02-06 | 1983-10-18 | Tokyo Shibaura Denki Kabushiki Kaisha | Gas extracting device |
| US4444040A (en) | 1981-07-27 | 1984-04-24 | Hitachi, Ltd. | Method and apparatus for detecting gas components in oil in oil-filled device |
| EP0179296B1 (en) | 1984-10-25 | 1989-04-26 | BBC Brown Boveri AG | Device for determining the quantitative composition of gases |
| DE9210855U1 (en) | 1992-08-13 | 1992-11-19 | Siemens AG, 8000 München | Device for the gas chromatographic analysis of gases contained in liquids |
| DE29606210U1 (en) | 1996-04-04 | 1996-06-20 | FEV Motorentechnik GmbH & Co. KG, 52078 Aachen | Device for measuring the gas content in liquids |
-
2002
- 2002-11-11 DE DE10252652.4A patent/DE10252652B4/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1914546A3 (en) * | 2006-10-19 | 2009-04-22 | IAV GmbH Ingenieurgesellschaft Auto und Verkehr | Method and device for determining the usage properties of a lubricant |
| CN100554919C (en) * | 2007-05-08 | 2009-10-28 | 中国科学院广州地球化学研究所 | The high precision collection device of minimum gas and using method |
| WO2015044516A1 (en) | 2013-09-24 | 2015-04-02 | Vaisala Oyj | Method and system for gas concentration measurement of gas dissolved in liquids |
| DE102016118701B4 (en) | 2015-10-12 | 2023-03-23 | GM Global Technology Operations LLC | Method of testing a pressurized liquid for dissolved and/or entrained gases |
| CN107525879A (en) * | 2017-09-26 | 2017-12-29 | 国网上海市电力公司 | A kind of method of propane content in measure insulating oil |
| CN107796886A (en) * | 2017-09-26 | 2018-03-13 | 国网上海市电力公司 | A kind of method of propylene content in measure insulating oil |
| CN109253995A (en) * | 2018-10-31 | 2019-01-22 | 中国石油天然气股份有限公司 | A kind of mercury isotope testing method and device for natural gas |
| AT523841B1 (en) * | 2020-10-19 | 2021-12-15 | Omicron Electronics Gmbh | Device and method for degassing a device and corresponding test system for gas analysis |
| AT523841A4 (en) * | 2020-10-19 | 2021-12-15 | Omicron Electronics Gmbh | Device and method for degassing a device and corresponding test system for gas analysis |
| CN113552017A (en) * | 2021-08-31 | 2021-10-26 | 广东电网有限责任公司 | A device and method for measuring gas content in oil |
| CN113552017B (en) * | 2021-08-31 | 2023-06-27 | 广东电网有限责任公司 | A device and method for measuring gas content in oil |
| CN118465153A (en) * | 2024-07-09 | 2024-08-09 | 宁波理工环境能源科技股份有限公司 | Degassing device and degassing method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10252652B4 (en) | 2021-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE602004013199T2 (en) | SYSTEM AND METHOD FOR DETERMINING THE LEAKAGE SAFETY OF AN OBJECT | |
| DE69223872T2 (en) | Determination of the gas volume in the cooling oil of a transformer | |
| DE10252652B4 (en) | Apparatus and method for degassing fluid samples | |
| EP3071964A1 (en) | Apparatus and method for detecting gas | |
| DE69212416T2 (en) | Method and device for the continuous monitoring of gas dissolved in oil | |
| DE602004011795T2 (en) | METHOD FOR INTRODUCING STANDARD GAS INTO A SAMPLING VESSEL | |
| DE19627922A1 (en) | Method and appliance for recovering helium used in leakage tests | |
| DE2139992A1 (en) | METHOD AND DEVICE FOR SAMPLING AND APPLYING A SAMPLE INTO AN ANALYZER | |
| DE2445124B2 (en) | Device for connecting a mass spectrometer with sampling lines branching off at selected points in a system to be monitored | |
| DE68928356T4 (en) | Method and device for taking a sample from a cryogenic liquid | |
| EP3234537B1 (en) | Device and method for performing a leak test on fuel rod capsules | |
| EP2233922A1 (en) | Method for online monitoring of the atmospheric gases dissolved in insulation liquids from high-voltage systems and device for carrying out this method | |
| DE1773609C3 (en) | Method and device for the analysis of the hydrogen contained in steel by hot extraction of a sample and gas chromatographic determination | |
| CH615509A5 (en) | Method and sampling column for discontinuous sampling of gases, vapours or mixtures thereof | |
| DE20217473U1 (en) | Degassing module, used for fluid samples, comprises glass flask, outflow tap, stirring system and vacuum flange on flask neck, divider piece for valve, valve for introducing inert gas, pressure measuring head, and gas removal connection | |
| CH709526A2 (en) | Device for extraction and analysis of gases. | |
| DE2713623A1 (en) | Gas concentration monitor - with side stream pumper in variable volume and circulated through semiconductor measuring module | |
| EP4200608B1 (en) | Apparatus and method for degassing a device, and corresponding test system for gas analysis | |
| EP0483613B1 (en) | Method and apparatus for the qualitative and/or quantitative monitoring of liquid raw materials | |
| DE2017242B2 (en) | DOSING VALVE AND METHOD FOR INTRODUCING A PRESSURIZED MEDIUM INTO ANALYZING APPARATUS | |
| DE102006025932B3 (en) | Sampling device for volatile compounds in gaseous atmospheres allows automated desorption for analysis by enclosure of adsorbent sampling tubes in septum sealed containers for through-needle connection | |
| DE10132390B4 (en) | Apparatus and method for analyzing organic substances of pure or ultrapure water | |
| EP3710808B1 (en) | Method for measuring the vapour pressure of fluids and solids | |
| DE4132358C2 (en) | Method and device for examining gaseous starting material | |
| DE3234561A1 (en) | Oil transformer gas analysis device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| R016 | Response to examination communication | ||
| R018 | Grant decision by examination section/examining division | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
| R020 | Patent grant now final |