Device for Measuring Oxidation-Reduction Potential and Method for Measuring Oxidation-Reduction Potential
First Claim
1. A device for measuring oxidation-reduction potential, comprising:
- a substrate;
a working electrode formed on a surface of the substrate; and
a processing circuit that processes an output of the working electrode;
wherein the substrate is provided with a bipolar transistor for amplifying the output of the working electrode.
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Accused Products
Abstract
Provided is a small-sized device for measuring an oxidation-reduction potential, whereby an oxidation-reduction current and an oxidation-reduction potential can be measured by reducing noise even when a signal from a solution being measured is small. A device for measuring an oxidation-reduction potential is provided with a substrate (10), a working electrode (15) mounted on a surface of the substrate (10), and a bipolar transistor (21) for amplifying the output of the working electrode (15) also provided on the surface of the substrate (10), and the signal amplified by the bipolar transistor (21) is inputted to a processing circuit (18).
3 Citations
8 Claims
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1. A device for measuring oxidation-reduction potential, comprising:
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a substrate; a working electrode formed on a surface of the substrate; and a processing circuit that processes an output of the working electrode; wherein the substrate is provided with a bipolar transistor for amplifying the output of the working electrode. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of measuring oxidation-reduction potential that uses a measuring device including a substrate, a working electrode arranged in a container formed on a surface of the substrate, a processing circuit that processes an output of the working electrode, and a bipolar transistor formed on the substrate to amplify the output of the working electrode, the measurement method comprising the steps of:
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sweeping voltage applied to a counter electrode arranged opposite to the working electrode inside the container; amplifying a current output from the working electrode with the bipolar transistor before the current is applied to the processing circuit; and producing a compensation current that flows in a direction opposite to that of a current output from the working electrode to a base of the bipolar transistor in a case where a first potential is applied to the counter electrode, when a second potential different from the first potential is applied to the counter electrode. - View Dependent Claims (8)
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Specification