Calibration method for water hardness measurement
US10317385B2 · kind B2 · utility
3Cited by
33References
20Claims
0Family size
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Key dates
| Filing date | Jul 1, 2016 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | May 4, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/127
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are methods that can be used to automatically calibrate a fluorescence-measuring instrument capable of continuously measuring the concentration of hardness in process water. The calibration method is used to compensate for drift of instrument and equipment, changes of operational conditions, and contamination of reagents and calibration standards. Calibration of the fluorescence-measuring instrument using the present calibration method improves both accuracy and repeatability for subsequent hardness concentration measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.