System for verifying the calibration of a turbidimeter
US5912737A · kind A · utility
11Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1998 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Jun 1, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4785
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system is described for verifying the calibration of a turbidimeter having a light source and a detector for scattered light. A first polarizer is positioned in the path of the light beam, and a second polarizer is positioned between the first polarizer and the detector. The first polarizer linearly polarizes the light beam and the second polarizer restricts the amount of light passing through it to reach the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.