EP 0063113 A1 19821027 - METHOD AND DEVICE FOR TIGHTNESS TESTING OF A TEST OBJECT HAVING AT LEAST TWO SEPARATE CHAMBERS.
Title (en)
METHOD AND DEVICE FOR TIGHTNESS TESTING OF A TEST OBJECT HAVING AT LEAST TWO SEPARATE CHAMBERS.
Title (de)
VERFAHREN UND VORRICHTUNG ZUR LECKPRÜFUNG EINES MINDESTENS ZWEI VERSCHIEDENE KAMMERN AUFWEISENDEN TESTMUSTERS.
Title (fr)
PROCEDE ET DISPOSITIF SERVANT A VERIFIER L'ETANCHEITE D'UN OBJET POSSEDANT AU MOINS DEUX CHAMBRES SEPAREES.
Publication
Application
Priority
SE 8000258 W 19801024
Abstract (en)
[origin: WO8201590A1] A method and a device for tightness testing of two separate chambers (C1, C2) of a test object (T), the two chambers being separated by at least one partition wall, especially in serial production. A possible pressure change in each chamber compared to the pressure in an associated reference container (R1, R2) is measured. Preferably in a first step, the tightness between the chambers (C1, C2) is tested by connecting each chamber to the respective reference container (R1, R2) and applying different, high pressures (TR1, TR2), The chamber (C2) having the lowest pressure and the associated reference container (R2) are disconnected (V5, V5') from each other and connected to a differential pressure sensor (D1) for detecting a possible pressure increase caused by internal leakage. If no internal leakage is detected, each chamber is then tested with respect to a possible external leakage.
Abstract (fr)
Procede et dispositif permettant de verifier l'etancheite entre deux chambres separees (C1, C2) d'un objet a verifier (T), les deux chambres etant separees par au moins une paroi de separation, notamment lors de la production en serie. Un eventuel changement de pression dans chaque chambre compare a la pression dans un recipient de reference associe (R1, R2) est mesure. De preference pendant une premiere etape, l'etancheite entre les chambres (C1, C2) est verifiee en connectant chaque chambre au recipient de reference respectif (R1, R2) et en appliquant des pressions elevees differentes (TR1, TR2). La chambre (C2) presentant la pression la plus basse et le recipient de reference associe (R2) sont deconnectes (V5, V5') l'un de l'autre et connectes a un detecteur de pression differentiel (D1) permettant de detecter une eventuelle augmentation de la pression provoquee par une fuite interne. Si aucune fuite interne n'est detectee, chaque chambre est examinee pour deceler une eventuelle fuite vers l'exterieur.
IPC 1-7
IPC 8 full level
CPC (source: EP)
G01M 3/3263 (2013.01)
Designated contracting state (EPC)
AT CH DE FR GB LI LU NL SE
DOCDB simple family (publication)
WO 8201590 A1 19820513; EP 0063113 A1 19821027; JP H0128329 B2 19890602; JP S57501596 A 19820902
DOCDB simple family (application)
SE 8000258 W 19801024; EP 80901978 A 19801024; JP 50239780 A 19801024