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Method for determining residual coupling of an inductive conductivity sensor
US8933709B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8933709-B2 |
| Application number | US-201113154532-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 7, 2011 |
| Priority date | Jun 7, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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A method for determining residual coupling of an inductive, conductivity sensor, in which the conductivity sensor is surrounded by a measured medium and an equivalent impedance of the medium is calibrated with a variable compensation impedance. The variable compensation impedance and the equivalent impedance of the medium act on a measuring coil of the conductivity sensor with a phase shift of 180°. In order to be able to perform a measuring of the residual coupling with a high accuracy of measurement at any time during operation of the conductivity sensor, the variable compensation impedance is varied until an output voltage of the measuring coil of the conductivity sensor assumes a minimum voltage; wherein the minimum voltage corresponds to the residual coupling of the inductive, conductivity sensor.
First claim
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The invention claimed is: 1. A method for determining residual coupling of an inductive, conductivity sensor, in which the conductivity sensor is surrounded by a measured medium and an equivalent impedance of the medium is calibrated with a variable compensation impedance; wherein the variable compensation impedance and the equivalent impedance of the medium act on a measuring coil of the conductivity sensor with a phase shift of 180°, comprising the step of: varying the variable…
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Physics · mapped topic
Physics · mapped topic
- G01R27/22Primary
Physics · mapped topic
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- What does patent US8933709B2 cover?
- A method for determining residual coupling of an inductive, conductivity sensor, in which the conductivity sensor is surrounded by a measured medium and an equivalent impedance of the medium is calibrated with a variable compensation impedance. The variable compensation impedance and the equivalent impedance of the medium act on a measuring coil of the conductivity sensor with a phase shift of …
- Who is the assignee on this patent?
- Völker Marco, Conducta Endress & Hauser
- What technology area does this patent fall under?
- Primary CPC classification G01R27/22. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 13 2015 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).