Method and apparatus for determining boiler water conductivity
US4047099A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1975 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Sep 15, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for determining boiler water conductivity to minimize erratic readings due to the random presence of steam in the region of the conductivity sensor. The apparatus includes circuitry for providing a signal responsive to the peak conductivity detected by the sensor. This peak signal is stored in a storage circuit having a relatively slow decay rate so as to not be disturbed by subsequent lower and erratic conductivity probe signals, with the stored peak signals being updated by subsequent peak readings more indicative of the true conductivity of the water. An embodiment which steps to subsequent peak readings is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.