Flow through electrode with automated calibration
US6438501B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1998 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Dec 28, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4165
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is an improved automated flow through electrode liquid monitoring system. The automated system has a sample inlet to a sample pump, a sample outlet from the sample pump to at least one flow through electrode with a waste port. At least one computer controls the sample pump and records data from the at least one flow through electrode for a liquid sample. The improvement relies upon (a) at least one source of a calibration sample connected to (b) an injection valve connected to said sample outlet and connected to said source, said injection valve further connected to said at least one flow through electrode, wherein said injection valve is controlled by said computer to select between said liquid sample or said calibration sample. Advantages include improved accuracy because of more frequent calibrations, no additional labor for calibration, no need to remove the flow through electrode(s), and minimal interruption of sampling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.