Water conductivity monitoring circuit for use with a steam generator
US7445703B2 · kind B2 · utility
5Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2006 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Oct 10, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water conductivity monitoring circuit determines the status of an ion exchange filter in the water flow to a steam generator. A microprocessor sends a reference signal to a conductivity sensor circuit that converts it to an excite signal that is sent to a probe in the water flow. Any conductivity of the water alters the excite signal, and the modified signal is compared to the reference signal to establish a value indicative of the conductivity of the water. The microprocessor compares the value to at least two thresholds representative of the status of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.