Patent · US Active

Leakage search assembly having a sniffing probe

US7874201B2 · kind B2 · utility

1Cited by

8References

6Claims

0Family size

Assignee

INFICON AG · LI

Inventors

Werner Grosse Bley · Bonn, DE
Sandra Seitz · Goldkronach, DE

Key dates

Filing date	Aug 17, 2006
Grant date	Jan 25, 2011
Priority date	—
Expiry date	Jul 31, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG01M3/205
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The leakage search assembly has a main device which contains a vacuum pump and a test gas sensor, and a hand-held sniffing probe. Capillary lines which connect the sniffing probe to the basic assembly contain valves by means of which these lines can be selectively opened. In a leakage search mode, the capillary line having the larger cross section is open. This results in leaks also being found from a greater distance. The dead time before response of the test gas sensor is shortened. Once a leak has been located, the assembly is switched to the leakage rate measurement mode, in which only the capillary line with the smaller cross section is open. This results in quantitative determination of the leakage rate with high accuracy and high stability.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.