Turbidity sensor with analog to digital conversion capability
US5331177A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1993 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Apr 26, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/122
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A turbidity sensor is provided with a light source and a plurality of light sensitive components which are disposed proximate a conduit to measure the light intensity directly across the conduit from the light source and at an angle therefrom. The conduit is provided with a plurality of protrusions extending radially inward from the walls of the conduit to discourage the passage of air bubbles through the light beam of the sensor. The direct light beam and scattered light are compared to form a relationship that is indicative of the turbidity of the liquid passing through the conduit. The rate of change of turbidity is provided as a monitored variable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.