Filter integrity monitoring system
US6052058A · kind A · utility
14Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1998 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Oct 28, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/53
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for monitoring integrity of a filter (25) of a smoke or fire detector system. The system has a detector chamber (14) into which light is passed from a light source incorporated into a light source control circuit (10). Scattered light is detected by a light scatter detector (12). Controller circuit (16) receives signal from the detector (12) and makes a cumulative count over time of the number of dust particles detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.