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1. (WO1998050769) LEAK TEST FOR CLOSED RECEPTACLES, TESTING CHAMBER, TESTING DEVICE AND INSTALLATION THEREFOR
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1998/050769 International Application No.: PCT/CH1998/000181
Publication Date: 12.11.1998 International Filing Date: 05.05.1998
Chapter 2 Demand Filed: 11.09.1998
IPC:
G01M 3/18 (2006.01) ,G01M 3/32 (2006.01)
G PHYSICS
01
MEASURING; TESTING
M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3
Investigating fluid tightness of structures
02
by using fluid or vacuum
04
by detecting the presence of fluid at the leakage point
16
using electric detection means
18
for pipes, cables, or tubes; for pipe joints or seals; for valves
G PHYSICS
01
MEASURING; TESTING
M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3
Investigating fluid tightness of structures
02
by using fluid or vacuum
26
by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
32
for containers, e.g. radiators
Applicants: LEHMANN, Martin[CH/CH]; CH
Inventors: LEHMANN, Martin; CH
Agent: TROESCH SCHEIDEGGER WERNER AG; Siewerdtstrasse 95 CH-8050 Zürich, CH
Priority Data:
97107528.807.05.1997EP
Title (EN) LEAK TEST FOR CLOSED RECEPTACLES, TESTING CHAMBER, TESTING DEVICE AND INSTALLATION THEREFOR
(FR) PROCEDE DE CONTROLE D'ETANCHEITE DE RECIPIENTS FERMES, AINSI QUE CHAMBRE DE CONTROLE, DISPOSITIF ET INSTALLATION DE CONTROLE Y RELATIF
(DE) VERFAHREN ZUR DICHTHEITSPRÜFUNG GESCHLOSSENER BEHÄLTER, PRÜFKAMMER, PRÜFANORDNUNG UND PRÜFANLAGE HIERFÜR
Abstract:
(EN) The invention relates to a leak test for liquid-filled receptacles, in accordance with which a pressure difference Dp between the inside and the outside of the receptacle is established. The invention seeks to provide reliable information about the imperviousness of the receptacle and also of its walls, which are in contact with the liquid content. To this end, impedance measurement (7) is carried out on the outside of the receptacle by means of measuring electrodes (3a, 3b).
(FR) L'invention concerne le contrôle d'étanchéité de récipients remplis de liquide, selon lequel on établit une différence de pression $g(D)p s'exerçant de l'intérieur vers l'extérieur du récipient. Dans le but de disposer d'une information fiable sur l'étanchéité existante, y compris celle en rapport avec la paroi du récipient en contact avec le produit liquide, on effectue, au moyen d'électrodes de mesure (3a, 3b), une mesure d'impédance (7) à l'extérieur du récipient (1).
(DE) Um bei Dichtheitsprüfung von flüssigkeitsgefüllten Behältern, bei welcher eine vom Behälterinnern nach dessen Äussern errichtete Druckdifferenz $g(D)p erstellt wird, auch bezüglich Behälterwandung, die mit Füllgut in Kontakt steht, eine zuverlässige Aussage über den Dichtheitszustand zu erhalten, wird mittels Messelektroden (3a, 3b) am Äussern des Behälters (1) eine Impedanzmessung (7) vorgenammen
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)