In-line residual chlorine analyzer
US3959087A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Apr 17, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A residual chlorine analyzer for testing chlorinated water, and including an amperometric cell whose flow passage is provided with spaced measuring and counter-electrodes both formed of copper. A sample stream diverted from the water to be tested is continuously conducted through the flow passage between the electrodes. Impressed across the electrodes is a voltage which renders the measuring electrode negative relative to the counter-electrode to an extent causing the cell to operate in a saturation voltage zone wherein the intensity of current passing through the cell is independent of changes in the impressed voltage and is proportional to the bulk concentration of the chlorine in solution. The current is measured by a meter calibrated in terms of concentration to maintain an uninterrupted, in-line check on residual chlorine in the water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.