Air sampling system having a plurality of air sampling devices with their own flow switches
US7973668B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2010 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Mar 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N1/2273
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for sampling air in a controlled environment that includes two or more 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 each air sampling devices via separate first vacuum tubes. A ffow switch for each of the air sampling devices is provided at a location between a corresponding air sampling device and the vacuum source, each of the flow switches being configured to separately measure and control the rate of air flow through a corresponding first vacuum tube. 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.