DEVICE FOR HIGH-RESOLUTION DETERMINATION OF THE CONCENTRATION OF SUBSTANCES IN FLUID MEDIA
First Claim
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1. A device for determining the concentration of one or more substances in a fluid medium, said device characterised by the light emission of an MQW LED used for absorption measurement, wherein the emitted light interacts in a measuring system with the substance to be determined, and acts, in a detector unit by means of an optical filter, upon an absorption detector and a reference detector to generate a measurement signal and a reference signal, respectively, whereby the concentration of the substance to be determined is found by comparing these signals.
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Abstract
The present invention relates to a device for determining the concentration of substances in fluid media.
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15 Claims
- 1. A device for determining the concentration of one or more substances in a fluid medium, said device characterised by the light emission of an MQW LED used for absorption measurement, wherein the emitted light interacts in a measuring system with the substance to be determined, and acts, in a detector unit by means of an optical filter, upon an absorption detector and a reference detector to generate a measurement signal and a reference signal, respectively, whereby the concentration of the substance to be determined is found by comparing these signals.
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