Air sampling system having a plurality of air sampling devices with their own flow switches
US7940188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2010 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Jul 26, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/182
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for sampling air in a controlled environment that includes air sampling devices at different locations within the controlled environment. A controller is provided at a location outside of the controlled environment and in separate air flow communication with the air sampling devices via separate first vacuum tubes, the controller having a manifold configured to separately control a rate of air flow from the air sampling devices to the controller via each of the separate first vacuum tubes and to selectively direct the air flow from each of the separate first vacuum tubes to one or more second vacuum tubes. An alarm is automatically activated at a location inside the controlled environment by one or more of the flow switches when the rate of air flow measured at one or more of the flow switches deviates from a desired value by a predetermined amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.