Gas leak sensor system
OwnerRalph G. Ridenourinventor
Life of this patent
Estimating the term…
Abstract
A gas leak sensor system detects the presence of gas leaking into any one of a plurality of test spaces for example, refrigeration gas into a refrigeration case. A plurality of tubes extend from each of the test spaces to a sensor location whereat a selector valve is connected to each tube. A controller actuates the selector valves to select tubes in a particular order and a vacuum source draws air and any leaking gas through a selected tube and through a gas sensor to activate an alarm. The gas sensor is purged at least each time a leaking gas has been sensed.
Claims14
A gas leak sensor system for detecting the presence of gas leaking into any of a plurality of test spaces, comprising, in combination:
- a plurality of tubes extending from each of the test spaces to a sensor location;
- selector valve means connected to each tube;
- a gas sensor having an alarm;
- control means to actuate said selector valve means to select tubes in a particular order;
- means connected to the selector valve means to draw air and any leaking gas through the selected tube and through the gas sensor;
- means to purge said gas sensor at least when leaking as has been sensed;
- and
- said purging means having a purging gas inlet remote from said test spaces.
Dependencies are inferred from the claim text.