Leak detector calibrating device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Apr 23, 1987
filing date -
Apr 23, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A leak detecting apparatus includes a detector arranged for sensing a gas emanating through a specimen to be tested for leaks; a leak simulator having an outlet emitting a gas of a known flow rate; and a valve for selectively connecting the outlet to the detector during a calibration thereof and disconnecting the outlet from the detector during a leak detecting operation thereof. The valve comprises a fast-switching 3/2-way valve including a movable valve member having first and second positions. In the first position the movable valve member allows communication through the valve solely between the outlet of the leak simulator and an input of the detector and in the second position allows communication through the valve solely between the outlet of the leak simulator and the atmosphere.
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