Apparatus with a self-cleaning electrode for sensing at least one parameter in water
US-2015226697-A1 · Aug 13, 2015 · US
Process for sensing at least one parameter in water
US9448200B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9448200-B2 |
| Application number | US-201314392031-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 19, 2013 |
| Priority date | Sep 20, 2012 |
| Publication date | Sep 20, 2016 |
| Grant date | Sep 20, 2016 |
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Abstract
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Apparatus ( 2 ) for sensing at least one parameter in water, which apparatus ( 2 ) comprises: (i) a dissolved oxygen sensor ( 4 ) for sensing dissolved oxygen in the water; and which apparatus ( 2 ) is such that: (ii) the dissolved oxygen sensor ( 4 ) has a working electrode and a reference electrode; and (iii) a voltage signal is applied between the working electrode and the reference electrode, and the voltage signal provides a conditioning waveform, then a wait time, and then a measurement function.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for sensing at least one parameter in water, which process comprises: providing in the water apparatus comprising a dissolved oxygen sensor which is for sensing dissolved oxygen in the water and which has a working electrode and a reference electrode; and (ii) applying a voltage signal between the working electrode and the reference electrode, and such that the voltage signal provides a conditioning waveform, then a wait time that returns a perturbed local oxygen concentration at the working electrode to a bulk oxygen concentration value, and then a measurement function that is sufficiently short that the extent of a depleted oxygen zone at the working electrode is minimised, and hence sensitivity to flow is minimised. 2. A process according to claim 1 and including providing the dissolved oxygen sensor with an auxiliary electrode, and setting a voltage between the working electrode and auxiliary electrode which is such that the desired voltage between the working electrode and the reference electrode is attained. 3. A process according to claim 1 in which the conditioning waveform duration is 100 ms-800 ms. 4. A process according to claim 1 in which the wait time is 200 ms-1800 ms. 5. A process according to claim 1 and including providing a depth sensor for sensing the depth of the water.
Assignees
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Classifications
- G01N27/49Primary
Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species · CPC title
Water · CPC title
- G01N27/4163Primary
checking the operation of, or calibrating, the measuring apparatus (G01N27/3274, G01N27/4175 and G01N33/0006 take precedence) · CPC title
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- What does patent US9448200B2 cover?
- Apparatus ( 2 ) for sensing at least one parameter in water, which apparatus ( 2 ) comprises: (i) a dissolved oxygen sensor ( 4 ) for sensing dissolved oxygen in the water; and which apparatus ( 2 ) is such that: (ii) the dissolved oxygen sensor ( 4 ) has a working electrode and a reference electrode; and (iii) a voltage signal is applied between the working electrode and the reference electrod…
- Who is the assignee on this patent?
- Univ Southampton
- What technology area does this patent fall under?
- Primary CPC classification G01N27/49. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 20 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).