Turbidity sensor
US6842243B2 · kind B2 · utility
20Cited by
10References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Feb 20, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0639
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A small size turbidity sensor for underwater in-situ measurements in the wide range of turbidity values is disclosed that may be integrated into a housing with other underwater sensors. The turbidity sensor incorporates micro focusing devices and light stop that gives no divergence excitation beam with convergence less than 1.5 degrees and the measuring angle between the optical axis of the incident radiation and mat of the diffused radiation 90 ±2.5 degrees. Another embodiment includes internal and external optical calibrators that allows the sensor to work longer without human intervention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.