CA2445088C - System for monitoring systems which in turn monitor the impermeability of a hollow body - Google Patents
System for monitoring systems which in turn monitor the impermeability of a hollow body Download PDFInfo
- Publication number
- CA2445088C CA2445088C CA2445088A CA2445088A CA2445088C CA 2445088 C CA2445088 C CA 2445088C CA 2445088 A CA2445088 A CA 2445088A CA 2445088 A CA2445088 A CA 2445088A CA 2445088 C CA2445088 C CA 2445088C
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- CA
- Canada
- Prior art keywords
- test body
- leak
- vacuum chamber
- pressure increase
- hollow body
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- Expired - Lifetime
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/007—Leak detector calibration, standard leaks
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a system for monitoring systems, which in turn monitor the impermeability of a hollow body. A test body (2), which generates a defined increase in pressure in a measuring chamber (4) over a predetermined time period, is used in the system in place of the hollow body. Said defined increase in pressure corresponds exactly to the pressure increase generated by a hollow body with negligible leakage, the hollow body being thus recognised as leakproof. The test body can be configured as a glass capillary, which runs in a sealed manner between two chambers at different air pressures.
Alternatively, the test body can consist of a substance, which during storage absorbs moisture from the ambient atmosphere in a defined manner. A vacuum created around the body removes moisture from the test body and said moisture evaporates at least partially in the vacuum, causing in turn an increase in pressure in the chamber. This pressure increase corresponds to the increase in pressure that is still acceptable for a hollow body to be tested.
Alternatively, the test body can consist of a substance, which during storage absorbs moisture from the ambient atmosphere in a defined manner. A vacuum created around the body removes moisture from the test body and said moisture evaporates at least partially in the vacuum, causing in turn an increase in pressure in the chamber. This pressure increase corresponds to the increase in pressure that is still acceptable for a hollow body to be tested.
Description
SYSTEM FOR MONITORING SYSTEMS WHICH IN TURN MONITOR
THE IMPERMEABILITY OF A HOLLOW BODY
Description The present invention relates to a system for monitoring systems which in turn monitor the impermeability of a hollow body.
Facilities and systems for monitoring the impermeability of a hollow body often work 3.o according to the pressure-resisting principle. In this case, the hollow body to be monitored is surrounded by a vacuum. If the vacuum remains constant over a test period, the hollow body is considered to be impermeable. If, on the other hand, the vacuum decreases and the pressure increases above a predetermined fixed value, the hollow body is classified as permeable.
Containers or cartridges for medical fluids or dosing aerosols for inhaling devices are noted as examples of test subjects from the medical field. By way of example, reference is made to the publications EP 0 775 076 B 1 , WO 00/49988, WO 97/39831 and WO
00/23037. All cartridges or containers described in these documents must, as hollow bodies, be monitored for impermeability. This is accomplished, inter alia, according to the aforementioned pressure-resisting principle.
To ensure the continuity of the monitoring process, it is necessary to monitor the system itself with which the impermeability of the hollow body is monitored to ascertain whether the measured increases in pressure are still measured correctly on the basis of a possible leakage and whether the correct conclusions are drawn from the measured values. Therefore, it is necessary to monitor the impermeability monitoring system itself.
=
THE IMPERMEABILITY OF A HOLLOW BODY
Description The present invention relates to a system for monitoring systems which in turn monitor the impermeability of a hollow body.
Facilities and systems for monitoring the impermeability of a hollow body often work 3.o according to the pressure-resisting principle. In this case, the hollow body to be monitored is surrounded by a vacuum. If the vacuum remains constant over a test period, the hollow body is considered to be impermeable. If, on the other hand, the vacuum decreases and the pressure increases above a predetermined fixed value, the hollow body is classified as permeable.
Containers or cartridges for medical fluids or dosing aerosols for inhaling devices are noted as examples of test subjects from the medical field. By way of example, reference is made to the publications EP 0 775 076 B 1 , WO 00/49988, WO 97/39831 and WO
00/23037. All cartridges or containers described in these documents must, as hollow bodies, be monitored for impermeability. This is accomplished, inter alia, according to the aforementioned pressure-resisting principle.
To ensure the continuity of the monitoring process, it is necessary to monitor the system itself with which the impermeability of the hollow body is monitored to ascertain whether the measured increases in pressure are still measured correctly on the basis of a possible leakage and whether the correct conclusions are drawn from the measured values. Therefore, it is necessary to monitor the impermeability monitoring system itself.
=
Accordingly, the present invention provides a monitoring system for an impermeability monitoring system of this type. In addition, an appropriate test body is to be proposed which can be inserted in the system instead of the hollow body to be tested and permits a reliable conclusion, based on its properties, about whether the impermeability monitoring system is still functioning properly.
Accordingly, the present invention provides a system for monitoring systems, which in turn serve to monitor the impermeability of a hollow body, wherein a test body is placed in a vacuum chamber instead of the hollow body, a defined quantity of moisture having been introduced beforehand into the test body, and a pressure increase in the vacuum chamber is measured within a predetermined time period, and, whereby the measured pressure increase exceeding a predetermined maximum pressure increase, indicates that the impermeability monitoring system has a malfunction.
A test body according to the invention for use in the system described above is designed such that the preset leakage is realized by a glass capillary of a predetermined length and preset diameter. This glass capillary thus passes through the already mentioned seal between the two chambers of the test chamber in which different air pressures prevail.
The glass capillary thus simulates a hollow body, i.e. for example a cartridge according to the aforementioned publications, with a maximum tolerable leakage. In a special , mbar application, the leakage rate of the glass capillary carries 6.67 x 1O sec X 1 at ambient atmosphere. (ambient air).
This value corresponds to the maximum tolerable value for the cartridge or hollow body.
For reasons of practicability, the glass capillary is preferably carried by a closed hollow body.
The preset leakage of the glass fiber is preferably preset by the diameter of the capillary, so that it is in the range of max. 50 ftM.
There is also provided an integrity testing system for leak-tightness testing systems, which are adapted in turn for determining or testing whether a canister or other sealed, hollow body filled with a liquid or gas under pressure is leaky, where such leak-tightness testing systems employ a vacuum chamber and any change in pressure within the vacuum chamber is monitored, the integrity testing system comprising: a test body having a pre-determined amount of removably absorbed moistness and the vacuum chamber of the leak-tightness testing system; wherein at least a portion of the test body is exposed to the vacuum chamber; whereby moisture is removed from the test body when a vacuum is generated in the vacuum chamber, the removed moisture producing a pressure increase in the vacuum chamber over a pre-determined time span.
There is still further provided a process for the integrity testing of leak-tightness testing systems, which leak-tightness testing systems in turn test whether a canister or other sealed, hollow body is leak-tight, the process comprising: providing a test body, wherein a defined amount of moistness is removably supplied to the test body in advance; placing the test body in a vacuum chamber of a leak-tightness testing system; generating a vacuum around the test body in the vacuum chamber, whereby moisture is removed from the test body, and whereby a pressure increase is produced in the vacuum chamber by the moisture removed from the test body; and measuring the pressure increase in the vacuum chamber over a pre-determined time span to determine the integrity of the leak-tightness testing system.
The basis for this system is that the test body consists of a material which can absorb defined moisture from the ambient atmosphere when stored. The amount of absorbable moisture can be influenced, among other things, by the size of the surface of the test body.
A vacuum is now generated in the vacuum chamber about the test body. During the test period, moisture is now removed from the test body and evaporated at least partially in the vacuum. This evaporation thereby increases the pressure in the vacuum chamber.
Depending on the time period and on the amount of fluid absorbed, a defined increase in pressure is thus produced in the vacuum chamber. This correlates to a pressure increase that is still tolerable in the hollow body to be monitored for impermeability, the actual test subject of the impermeability monitoring system.
The system relies on the actual impermeability monitoring system being adjusted such that it simulates the leakages which are still tolerable and that, in the actual test process, when the pressure increase is exceeded, it is a clear indication of additional leakages or other malfunctions in the system.
As already mentioned, the test body in the system consists of a special material.
Possible materials are those which have a relatively high absorption of a moisture, e.g.
water. Polyamide or polyoxymethyl come into consideration.
A great advantage of the proposed test body is seen therein that they can be used again after a recuperation time. According to the first proposed solution, a pressure equalization with the environment takes place after the test during the recuperation time of the test body for the system. A reabsorption of moisture from the environment in a constant atmosphere takes place after the test in the test bodies for the system according to the second proposed solution.
Accordingly, the present invention provides a system for monitoring systems, which in turn serve to monitor the impermeability of a hollow body, wherein a test body is placed in a vacuum chamber instead of the hollow body, a defined quantity of moisture having been introduced beforehand into the test body, and a pressure increase in the vacuum chamber is measured within a predetermined time period, and, whereby the measured pressure increase exceeding a predetermined maximum pressure increase, indicates that the impermeability monitoring system has a malfunction.
A test body according to the invention for use in the system described above is designed such that the preset leakage is realized by a glass capillary of a predetermined length and preset diameter. This glass capillary thus passes through the already mentioned seal between the two chambers of the test chamber in which different air pressures prevail.
The glass capillary thus simulates a hollow body, i.e. for example a cartridge according to the aforementioned publications, with a maximum tolerable leakage. In a special , mbar application, the leakage rate of the glass capillary carries 6.67 x 1O sec X 1 at ambient atmosphere. (ambient air).
This value corresponds to the maximum tolerable value for the cartridge or hollow body.
For reasons of practicability, the glass capillary is preferably carried by a closed hollow body.
The preset leakage of the glass fiber is preferably preset by the diameter of the capillary, so that it is in the range of max. 50 ftM.
There is also provided an integrity testing system for leak-tightness testing systems, which are adapted in turn for determining or testing whether a canister or other sealed, hollow body filled with a liquid or gas under pressure is leaky, where such leak-tightness testing systems employ a vacuum chamber and any change in pressure within the vacuum chamber is monitored, the integrity testing system comprising: a test body having a pre-determined amount of removably absorbed moistness and the vacuum chamber of the leak-tightness testing system; wherein at least a portion of the test body is exposed to the vacuum chamber; whereby moisture is removed from the test body when a vacuum is generated in the vacuum chamber, the removed moisture producing a pressure increase in the vacuum chamber over a pre-determined time span.
There is still further provided a process for the integrity testing of leak-tightness testing systems, which leak-tightness testing systems in turn test whether a canister or other sealed, hollow body is leak-tight, the process comprising: providing a test body, wherein a defined amount of moistness is removably supplied to the test body in advance; placing the test body in a vacuum chamber of a leak-tightness testing system; generating a vacuum around the test body in the vacuum chamber, whereby moisture is removed from the test body, and whereby a pressure increase is produced in the vacuum chamber by the moisture removed from the test body; and measuring the pressure increase in the vacuum chamber over a pre-determined time span to determine the integrity of the leak-tightness testing system.
The basis for this system is that the test body consists of a material which can absorb defined moisture from the ambient atmosphere when stored. The amount of absorbable moisture can be influenced, among other things, by the size of the surface of the test body.
A vacuum is now generated in the vacuum chamber about the test body. During the test period, moisture is now removed from the test body and evaporated at least partially in the vacuum. This evaporation thereby increases the pressure in the vacuum chamber.
Depending on the time period and on the amount of fluid absorbed, a defined increase in pressure is thus produced in the vacuum chamber. This correlates to a pressure increase that is still tolerable in the hollow body to be monitored for impermeability, the actual test subject of the impermeability monitoring system.
The system relies on the actual impermeability monitoring system being adjusted such that it simulates the leakages which are still tolerable and that, in the actual test process, when the pressure increase is exceeded, it is a clear indication of additional leakages or other malfunctions in the system.
As already mentioned, the test body in the system consists of a special material.
Possible materials are those which have a relatively high absorption of a moisture, e.g.
water. Polyamide or polyoxymethyl come into consideration.
A great advantage of the proposed test body is seen therein that they can be used again after a recuperation time. According to the first proposed solution, a pressure equalization with the environment takes place after the test during the recuperation time of the test body for the system. A reabsorption of moisture from the environment in a constant atmosphere takes place after the test in the test bodies for the system according to the second proposed solution.
The invention will be described schematically in greater detail with reference to two embodiments, showing:
Fig. 1 schematically the system according to the first proposed solution in preparation for the monitoring of the impermeability monitoring system, Fig. 2 the ready-to-use system according to the first proposed solution, Fig. 3 the system of Fig. 2 during the test, and Fig. 4 the system according to the second proposed solution.
The same reference numbers designate the same parts in the following.
Fig. 1 schematically shows the first system. It essentially consists of the test chamber 5 in which, after the impermeability monitoring system has been acknowledged as ready-to-use, the actual test subject, namely the hollow body, is placed. However, to monitor this system, the test body 2 is used. The test body 2 extends through a seal 6 with which the lower part of the test chamber 5 is sealed and thus separates a first test chamber 3 in which the ambient air pressure generally prevails.
In this case, the test body 2 consists of a hollow body and a defined leakage, which is realized by a glass capillary 7 of a defined length and defined diameter. As shown in Fig. 2, to carry out the test, a suction bell 8 is placed on the seal 6 and the area thus defined is evacuated until the pressure found therein is, for example, about 1 mbar. The suction bell 8 surrounds the second chamber 4 of the test chamber 5. If the air pressure in the first chamber 3 is about 1000 mbar and about 1 mbar in the second chamber 4, then the pressure difference between both chambers is 999 mbar. Together with the glass capillary 7 of the test body 2, this results in a certain pressure equalization between the chambers 3 and 4 within a predetermined time period. This is schematically illustrated in Fig. 3, where the air flow through the glass capillary 7 is shown by the arrow 9.
The glass capillary 7 is dimensioned such that the leakage rate corresponds to a leakage rate which indicates a still acceptable leakage in the hollow bodies to be monitored.
The leakage rate is ascertained by sensors (not shown). If the leakage rate exceeds a preset value, then it is concluded that the system as such does not meet the requirements in order to continue to be used in the impermeability monitoring process.
Additional leakages are then the main cause of a malfunction.
Fig. 4 schematically shows the second proposed solution. A test body 20 is placed in a vacuum chamber 30. A vacuum is produced about this test body in the vacuum chamber 30. During the test phase, moisture is removed from the test body 20 and evaporated at least partially in the vacuum. This evaporation increases the pressure in the vacuum chamber 30 which can be detected by sensors (not shown). This pressure increase corresponds to that pressure increase which is still tolerable in the hollow bodies which can then be monitored for impermeability in the impermeability monitoring system.
Fig. 1 schematically the system according to the first proposed solution in preparation for the monitoring of the impermeability monitoring system, Fig. 2 the ready-to-use system according to the first proposed solution, Fig. 3 the system of Fig. 2 during the test, and Fig. 4 the system according to the second proposed solution.
The same reference numbers designate the same parts in the following.
Fig. 1 schematically shows the first system. It essentially consists of the test chamber 5 in which, after the impermeability monitoring system has been acknowledged as ready-to-use, the actual test subject, namely the hollow body, is placed. However, to monitor this system, the test body 2 is used. The test body 2 extends through a seal 6 with which the lower part of the test chamber 5 is sealed and thus separates a first test chamber 3 in which the ambient air pressure generally prevails.
In this case, the test body 2 consists of a hollow body and a defined leakage, which is realized by a glass capillary 7 of a defined length and defined diameter. As shown in Fig. 2, to carry out the test, a suction bell 8 is placed on the seal 6 and the area thus defined is evacuated until the pressure found therein is, for example, about 1 mbar. The suction bell 8 surrounds the second chamber 4 of the test chamber 5. If the air pressure in the first chamber 3 is about 1000 mbar and about 1 mbar in the second chamber 4, then the pressure difference between both chambers is 999 mbar. Together with the glass capillary 7 of the test body 2, this results in a certain pressure equalization between the chambers 3 and 4 within a predetermined time period. This is schematically illustrated in Fig. 3, where the air flow through the glass capillary 7 is shown by the arrow 9.
The glass capillary 7 is dimensioned such that the leakage rate corresponds to a leakage rate which indicates a still acceptable leakage in the hollow bodies to be monitored.
The leakage rate is ascertained by sensors (not shown). If the leakage rate exceeds a preset value, then it is concluded that the system as such does not meet the requirements in order to continue to be used in the impermeability monitoring process.
Additional leakages are then the main cause of a malfunction.
Fig. 4 schematically shows the second proposed solution. A test body 20 is placed in a vacuum chamber 30. A vacuum is produced about this test body in the vacuum chamber 30. During the test phase, moisture is removed from the test body 20 and evaporated at least partially in the vacuum. This evaporation increases the pressure in the vacuum chamber 30 which can be detected by sensors (not shown). This pressure increase corresponds to that pressure increase which is still tolerable in the hollow bodies which can then be monitored for impermeability in the impermeability monitoring system.
Claims (24)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A system for monitoring systems, which in turn serve to monitor the impermeability of a hollow body, wherein a test body (20) is placed in a vacuum chamber (30) instead of the hollow body, a defined quantity of moisture having been introduced beforehand into the test body (20), and a pressure increase in the vacuum chamber (30) is measured within a predetermined time period, and, whereby the measured pressure increase exceeding a predetermined maximum pressure increase, indicates that the impermeability monitoring system has a malfunction.
2. The system for monitoring systems, which in turn serve to monitor the impermeability of a hollow body according to Claim 1, characterized in that the test body is made of polyamide with a defined size of the surface area.
3. The system for monitoring systems, which in turn serve to monitor the impermeability of a hollow body according to Claim 2, characterized in that the test body is made of polyoxymethylene (POM) with a defined size of the surface area.
4. The system for monitoring systems, which in turn serve to monitor the impermeability of a hollow body according to Claim 1, characterized in that a predetermined leakage is obtained by means of a glass capillary (7) of predetermined length and predetermined diameter.
5. The system for monitoring systems, which in turn serve to monitor the impermeability of a hollow body according to Claim 4, where the leakage rate of the glass capillary (7) is 6.67 x 10 -3 ~ x 1 at ambient atmosphere.
6. The system for monitoring systems, which in turn serve to monitor the impermeability of a hollow body according to Claim 4 or 5, characterized in that the glass capillary (7) has a maximum diameter of approximately 50 µm.
7. An integrity testing system for leak-tightness testing systems, which are adapted in turn for determining or testing whether a canister or other sealed, hollow body filled with a liquid or gas under pressure is leaky, where such leak-tightness testing systems employ a vacuum chamber and any change in pressure within the vacuum chamber is monitored, the integrity testing system comprising:
a test body (20) having a pre-determined amount of removably absorbed moistness and the vacuum chamber (30) of the leak-tightness testing system;
wherein at least a portion of the test body is exposed to the vacuum chamber;
whereby moisture is removed from the test body when a vacuum is generated in the vacuum chamber, the removed moisture producing a pressure increase in the vacuum chamber over a pre-determined time span.
a test body (20) having a pre-determined amount of removably absorbed moistness and the vacuum chamber (30) of the leak-tightness testing system;
wherein at least a portion of the test body is exposed to the vacuum chamber;
whereby moisture is removed from the test body when a vacuum is generated in the vacuum chamber, the removed moisture producing a pressure increase in the vacuum chamber over a pre-determined time span.
8. The integrity testing system as recited in claim 7, wherein the test body comprises polyamide.
9. The integrity testing system as recited in claim 7, wherein the test body comprises polyoxymethylene (POM).
10. The integrity testing system as recited in claim 7, 8 or 9, wherein the test body is adapted to absorb a defined amount of moistness from the ambient atmosphere before being placed in the vacuum chamber.
11. The integrity testing system as recited in any one of claims 7 to 10, wherein the test body is a re-useable test body.
12. The integrity testing system of any one of claims 7 to 11, wherein the pressure increase is a pre-determined pressure increase when the vacuum chamber is leak-tight.
13. The integrity testing system as recited in claim 12, wherein the pre-determined pressure increase simulates the amount of leakage that would be just-tolerable from a leak-tight hollow body to be tested in the vacuum chamber.
14. The integrity testing system of any one of claims 7 to 11, wherein the vacuum chamber is not leak-tight when the pressure increase exceeds a pre-determine pressure increase.
15. The integrity testing system as recited in claim 14, wherein the pre-determined pressure increase simulates the amount of leakage that would be just-tolerable from a leak-tight hollow body to be tested in the vacuum chamber.
16. A process for the integrity testing of leak-tightness testing systems, which leak-tightness testing systems in turn test whether a canister or other sealed, hollow body is leak-tight, the process comprising:
providing a test body, wherein a defined amount of moistness is removably supplied to the test body in advance;
placing the test body in a vacuum chamber of a leak-tightness testing system;
generating a vacuum around the test body in the vacuum chamber, whereby moisture is removed from the test body, and whereby a pressure increase is produced in the vacuum chamber by the moisture removed from the test body;
and measuring the pressure increase in the vacuum chamber over a pre-determined time span to determine the integrity of the leak-tightness testing system.
providing a test body, wherein a defined amount of moistness is removably supplied to the test body in advance;
placing the test body in a vacuum chamber of a leak-tightness testing system;
generating a vacuum around the test body in the vacuum chamber, whereby moisture is removed from the test body, and whereby a pressure increase is produced in the vacuum chamber by the moisture removed from the test body;
and measuring the pressure increase in the vacuum chamber over a pre-determined time span to determine the integrity of the leak-tightness testing system.
17. The process of claim 16, wherein the test body absorbs the defined amount of moistness from the ambient atmosphere before being placed in the vacuum chamber.
18. The process of claim 16 or 17, wherein the test body can be re-used.
19. The process of claim 16, 17 or 18, wherein the test body comprises polyamide.
20. The process of claim16, 17 or 18, wherein the test body comprises polyoxymethylene (POM).
21. The process of any one of claims 16 to 20, wherein the pressure increase is a pre-determined pressure increase when the leak-tightness testing system is leak-tight.
22. The process of claim 21, wherein the pre-determined pressure increase simulates the amount of leakage that would be just-tolerable from a leak-tight hollow body to be tested in the leak-tightness testing system.
23. The process of any one of claims 16 to 20, wherein the leak-tightness testing system is not leak-tight when the pressure increase exceeds a pre-determined pressure increase.
24. The process of claim 23, wherein the pre-determined pressure increase simulates the amount of leakage that would be just-tolerable from a leak-tight hollow body to be tested in the vacuum chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10124260.3 | 2001-05-18 | ||
| DE10124260A DE10124260A1 (en) | 2001-05-18 | 2001-05-18 | System for checking systems which in turn serve to check the tightness of a hollow body |
| PCT/EP2002/004072 WO2002095348A1 (en) | 2001-05-18 | 2002-04-12 | System for monitoring systems, which in turn monitor the impermeability of a hollow body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2445088A1 CA2445088A1 (en) | 2002-11-28 |
| CA2445088C true CA2445088C (en) | 2013-11-12 |
Family
ID=7685276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2445088A Expired - Lifetime CA2445088C (en) | 2001-05-18 | 2002-04-12 | System for monitoring systems which in turn monitor the impermeability of a hollow body |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP1388003B1 (en) |
| JP (1) | JP4045190B2 (en) |
| AR (1) | AR033894A1 (en) |
| AT (1) | ATE458990T1 (en) |
| CA (1) | CA2445088C (en) |
| DE (2) | DE10124260A1 (en) |
| ES (1) | ES2338215T3 (en) |
| MX (2) | MXPA03010526A (en) |
| PE (1) | PE20030014A1 (en) |
| TW (1) | TW544514B (en) |
| UY (1) | UY27292A1 (en) |
| WO (1) | WO2002095348A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098891A (en) * | 2009-12-10 | 2011-06-15 | 佳能企业股份有限公司 | Waterproof electronic device with test structure, water leakage tester and testing method |
| DE102012210040A1 (en) * | 2012-06-14 | 2013-12-19 | Inficon Gmbh | Tester with a test gas container |
| DE102012220108A1 (en) * | 2012-11-05 | 2014-05-22 | Inficon Gmbh | Method for testing a leak test system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5640712A (en) * | 1979-09-11 | 1981-04-17 | Toshiba Corp | Standard leakage unit |
| DE3340353A1 (en) * | 1983-11-08 | 1985-05-15 | Pfanni-Werke Otto Eckart KG, 8000 München | Method and device for detecting leaks in sealed containers |
| DE3613694A1 (en) * | 1986-04-23 | 1987-10-29 | Leybold Heraeus Gmbh & Co Kg | DEVICE FOR CALIBRATING THE DETECTOR OF A LEAK DETECTOR |
| DE4038266A1 (en) * | 1990-11-30 | 1992-06-04 | Siemens Ag | Testing gas pressure tightness, esp. sulphur hexa:fluoride tightness of capacitors - placing component in container, evacuating container, then taking and measuring gas sample |
| DE4212938A1 (en) * | 1992-04-18 | 1993-10-21 | Rexroth Mannesmann Gmbh | Seal testing appts. e.g. for testing vehicle shock absorber - has pressure source for filling first chamber with gas and uses pressure sensor to determine pressure increase in second chamber |
| DE9401662U1 (en) * | 1994-02-02 | 1994-04-07 | Leybold Ag, 63450 Hanau | Leakage rate determining capillary for a test leak |
| DE19726559A1 (en) * | 1997-06-23 | 1998-12-24 | Bosch Gmbh Robert | Diagnostic module |
| DE19853368A1 (en) * | 1998-11-19 | 2000-06-08 | Weick Hans Joachim | Measuring water quantity and leakage in containers, e.g. of motor vehicle air conditioning system; involves determining partial pressure of water vapor |
-
2001
- 2001-05-18 DE DE10124260A patent/DE10124260A1/en not_active Ceased
-
2002
- 2002-04-12 MX MXPA03010526A patent/MXPA03010526A/en active IP Right Grant
- 2002-04-12 DE DE50214234T patent/DE50214234D1/en not_active Expired - Lifetime
- 2002-04-12 ES ES02727556T patent/ES2338215T3/en not_active Expired - Lifetime
- 2002-04-12 WO PCT/EP2002/004072 patent/WO2002095348A1/en active Application Filing
- 2002-04-12 MX MXPA03010561A patent/MXPA03010561A/en unknown
- 2002-04-12 EP EP02727556A patent/EP1388003B1/en not_active Expired - Lifetime
- 2002-04-12 AT AT02727556T patent/ATE458990T1/en active
- 2002-04-12 CA CA2445088A patent/CA2445088C/en not_active Expired - Lifetime
- 2002-04-12 JP JP2002591776A patent/JP4045190B2/en not_active Expired - Lifetime
- 2002-05-07 TW TW091109470A patent/TW544514B/en active
- 2002-05-16 UY UY27292A patent/UY27292A1/en not_active Application Discontinuation
- 2002-05-17 AR ARP020101828A patent/AR033894A1/en not_active Withdrawn
- 2002-05-17 PE PE2002000417A patent/PE20030014A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| TW544514B (en) | 2003-08-01 |
| UY27292A1 (en) | 2002-12-31 |
| DE10124260A1 (en) | 2002-12-05 |
| ES2338215T3 (en) | 2010-05-05 |
| JP4045190B2 (en) | 2008-02-13 |
| ATE458990T1 (en) | 2010-03-15 |
| DE50214234D1 (en) | 2010-04-08 |
| EP1388003A1 (en) | 2004-02-11 |
| EP1388003B1 (en) | 2010-02-24 |
| WO2002095348A1 (en) | 2002-11-28 |
| CA2445088A1 (en) | 2002-11-28 |
| JP2004525387A (en) | 2004-08-19 |
| PE20030014A1 (en) | 2003-02-24 |
| AR033894A1 (en) | 2004-01-07 |
| MXPA03010526A (en) | 2004-03-02 |
| MXPA03010561A (en) | 2004-03-15 |
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Effective date: 20220412 |