Leakage search assembly having a sniffing probe

Details Leakage search assembly having a sniffing probe Leakage search assembly having a sniffing probe

2011-01-25

2011-01-25

Rogers, David A. (Department: 2856)

Measuring and testing

With fluid pressure

Leakage

C073S040000

Reexamination Certificate

active

07874201

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.

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