Coulomb counter circuitry
US-12101097-B2 · Sep 24, 2024 · US
Method for calibrating a conductivity measuring cell
US9500735B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9500735-B2 |
| Application number | US-201113884161-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 9, 2011 |
| Priority date | Nov 9, 2010 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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Abstract
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The invention relates to a method for calibrating a conductivity measuring cell located in a measurement setup for determining conductivity of a liquid medium, especially very pure water, by means of two electrodes of predetermined area arranged in the liquid medium at a predetermined separation relative to one another, supplied with an alternating voltage and having a cell constant, which is predetermined by separation and electrode area and must be calibrated. In order to be able to determine the cell constant independently of calibration standards with predetermined conductivity and/or reference measurement cells, an electrical capacitance of the measuring cell is ascertained by means of an alternating voltage placed on the electrodes in a frequency range between 1 kHz and 1 MHz, following which the cell constant is determined from the ascertained capacitance and the permittivity of the liquid medium contained in the measuring cell.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for calibrating a conductivity measuring cell located in a measurement setup for determining conductivity of a liquid medium, by means of two electrodes of predetermined area arranged in the liquid medium at a predetermined distance relative to one another, comprising the steps of: supplying the electrodes with an alternating voltage and having a cell constant, which is predetermined by distance and electrode area and must be calibrated; asc…
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Physics · mapped topic
Physics · mapped topic
- G01R35/005Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US9500735B2 cover?
- The invention relates to a method for calibrating a conductivity measuring cell located in a measurement setup for determining conductivity of a liquid medium, especially very pure water, by means of two electrodes of predetermined area arranged in the liquid medium at a predetermined separation relative to one another, supplied with an alternating voltage and having a cell constant, which is p…
- Who is the assignee on this patent?
- Riegel Harald, Endress & Hauser Conducta Gmbh & Co Kg
- What technology area does this patent fall under?
- Primary CPC classification G01R35/005. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).