[go: up one dir, main page]

SE9403781L - Method and apparatus for testing the density of a container - Google Patents

Method and apparatus for testing the density of a container

Info

Publication number
SE9403781L
SE9403781L SE9403781A SE9403781A SE9403781L SE 9403781 L SE9403781 L SE 9403781L SE 9403781 A SE9403781 A SE 9403781A SE 9403781 A SE9403781 A SE 9403781A SE 9403781 L SE9403781 L SE 9403781L
Authority
SE
Sweden
Prior art keywords
container
pressure
testing
limit value
tightness
Prior art date
Application number
SE9403781A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9403781D0 (en
SE515496C2 (en
Inventor
Bo Harde
Original Assignee
Volvo Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Volvo Ab filed Critical Volvo Ab
Priority to SE9403781A priority Critical patent/SE515496C2/en
Publication of SE9403781D0 publication Critical patent/SE9403781D0/en
Priority to PCT/SE1994/001104 priority patent/WO1996014561A1/en
Publication of SE9403781L publication Critical patent/SE9403781L/en
Publication of SE515496C2 publication Critical patent/SE515496C2/en

Links

Classifications

    • 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
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention relates to a method for testing the air-tightness of a closed container (3), comprising an evacuation of the container (3), measuring the pressure (p) in the container (3), measuring the time and providing an indication depending on values of the pressure (p), wherein the container (3) can be evacuated during a certain predetermined time period (t0). The method according to the invention is characterized in that it comprises: a first level detection, wherein the current value of the pressure (p) is compared with a first limit value (p2), the evacuation being switched off if the pressure is below said limit value (p2); and a second level detection after said time period (t0) has elapsed, wherein the current value of the pressure (p) is compared with a second limit value (p3), an indication regarding a leakage being provided if the second limit value (p3) has been exceeded. The invention provides a simplified and cheap, but still safe, testing of the air-tightness of closed containers, in particular fuel tanks for motor vehicles. The invention also relates to a device intended for use in the above-mentioned tightness testing of a container.
SE9403781A 1994-11-04 1994-11-04 Method and apparatus for testing the density of a sealed container SE515496C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9403781A SE515496C2 (en) 1994-11-04 1994-11-04 Method and apparatus for testing the density of a sealed container
PCT/SE1994/001104 WO1996014561A1 (en) 1994-11-04 1994-11-21 A method and a device for testing the tightness of a closed container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9403781A SE515496C2 (en) 1994-11-04 1994-11-04 Method and apparatus for testing the density of a sealed container

Publications (3)

Publication Number Publication Date
SE9403781D0 SE9403781D0 (en) 1994-11-04
SE9403781L true SE9403781L (en) 1996-05-05
SE515496C2 SE515496C2 (en) 2001-08-13

Family

ID=20395849

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9403781A SE515496C2 (en) 1994-11-04 1994-11-04 Method and apparatus for testing the density of a sealed container

Country Status (2)

Country Link
SE (1) SE515496C2 (en)
WO (1) WO1996014561A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE507197C2 (en) * 1996-08-26 1998-04-20 Getinge Skaerhamn Ab Method of testing air leakage
FR2846092B1 (en) * 2002-10-18 2004-12-24 Renault Sa METHOD AND DEVICE FOR TESTING THE SEALING OF A MECHANICAL MEMBER
DK2502043T3 (en) 2009-11-20 2018-04-23 Packaging Tech & Inspection Llc Rest vacuum state of a method and system for vacuum degradation leakage testing
IT1398531B1 (en) * 2010-02-25 2013-03-01 Noci DEVICE AND METHOD OF VERIFICATION OF THE VACUUM, PARTICULARLY FOR SEALING TESTS OF COMPONENTS OF REFRIGERATED AND SIMILAR MACHINES PROCESSED ON EMPTY CAROSELS.
CN107105381A (en) * 2017-06-22 2017-08-29 深圳市山海精仪科技有限公司 A kind of audio amplifier air leak test device and detection method
CN111024337A (en) * 2018-10-09 2020-04-17 郑州宇通重工有限公司 High-voltage electrical junction box air tightness detection device and detection method thereof
CN111795786A (en) * 2020-06-15 2020-10-20 黄山旺荣电子有限公司 Relay gas tightness detection device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790732A (en) * 1971-11-02 1973-02-15 Mannesmann Handel Warmedienst VACUOMETRIC LEAK INDICATOR FOR DOUBLE WALL LIQUID TANKS, ESPECIALLY FOR PETROL TANKS
US3800586A (en) * 1972-04-24 1974-04-02 Uson Corp Leak testing apparatus
IT1047349B (en) * 1975-10-07 1980-09-10 Gastaldo R PROCEDURE AND AUTOMATIC DEVICE FOR SEALING CAVITY TEST
US5261379A (en) * 1991-10-07 1993-11-16 Ford Motor Company Evaporative purge monitoring strategy and system
DE4227698C2 (en) * 1992-08-21 1996-08-01 Daimler Benz Ag Method for determining leaks in a motor vehicle tank ventilation system
DE4232148A1 (en) * 1992-09-25 1994-03-31 Bayerische Motoren Werke Ag Method for leak testing a tank system for motor vehicles
US5369984A (en) * 1993-08-31 1994-12-06 Environmental Systems Products, Inc. Method and apparatus for testing of tank integrity of vehicle fuel systems

Also Published As

Publication number Publication date
SE9403781D0 (en) 1994-11-04
WO1996014561A1 (en) 1996-05-17
SE515496C2 (en) 2001-08-13

Similar Documents

Publication Publication Date Title
CA2394293A1 (en) Nondestructive testing a sealed product for leaks
EP0789235A3 (en) Procedure and device for testing receptacles
DE3172259D1 (en) Method and apparatus for leak detection in pipelines
ES540275A0 (en) A METHOD AND ITS CORRESPONDING DEVICE TO DETECT A PO-SIBLE LEAK IN A VACUUM CONTAINER
DE69310254D1 (en) Leakage detection of packaging
GR3021190T3 (en) Use of a method and device for testing leakage
SE9403781D0 (en) Method and apparatus for testing the density of a container
EP0600491A3 (en) Method and apparatus for testing fluid pressure in a sealed vessel.
GB9320627D0 (en) Improvements in leakage detection
CA2268551A1 (en) Method for testing the reliability of a testing apparatus, specially an empty bottle inspecting device
EP0681168A3 (en) Method and apparatus for determining the internal pressure of a sealed container.
MY113935A (en) Fluid flow measurement
DK1007932T3 (en) Method of checking containers with lids
CA2092959A1 (en) Methods and systems for the negative pressure testing of underground storage tanks containing highly vaporous hydrocarbon liquids
US3675468A (en) Leak testing apparatus and method
JPH07187152A (en) Method for testing leakage of sealed bag
JP3062530B2 (en) Leak detection method and leak detection device
EP0661528A3 (en) Procedure and device for detecting defects in a fluid transporting pipe.
AU688483B2 (en) Pinhole detector
JPH0155440B2 (en)
JPS57171236A (en) Ozone detection type leakage inspector
JPS57141528A (en) Leakage inspecting method
DE3365401D1 (en) Device for detecting the liquid level in a tank, particularly of a liquefied gas in a lighter tank, and tank provided with such device
JP2558419Y2 (en) Inspection device for gas alarm
JPH0752000B2 (en) Inspection gas filling method for membrane tank

Legal Events

Date Code Title Description
NUG Patent has lapsed