Method for determination of concentration
US4110044A · kind A · utility
16Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1976 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Nov 23, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/53
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The percentage of suspended substances in a flowing medium is indicated by illuminating said medium with light perpendicularly to the direction of flow. The light intensity is held mainly constant at a predetermined value. Detection is made by a first light detector of light radiated from the medium in a predetermined direction and the electrical signal obtained is led to a device squaring the effective value of the portion of said signal lying within a predetermined frequency range. The percentage of the suspended substance is obtained from said square of the effective value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.