DEVICE FOR DETERMINING A CONCENTRATION OF A CHEMICAL SUBSTANCE
First Claim
1. A device for determining a concentration of a chemical substance dissolved in a liquid, which substance absorbs light of at least one absorption wavelength, comprising:
- at least one flow-through chamber havingat least one inlet opening,at least one outlet opening, andat least one peripheral wall;
at least two lasers which emit light of differing wavelengths, wherein said at least two lasers include at least one laser for emitting light of the at least one absorption wavelength; and
at least one detector for detecting emitted light, whereinat least some of the at least two lasers and the detector being arranged such that emitted light is conducted through the at least one flow-through chamber along at least two different paths before detection by the at least one detector.
1 Assignment
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Accused Products
Abstract
The invention relates to a device tier determining a concentration of a chemical substance dissolved in a liquid, which chemical substance absorbs light (10) of an absorption wavelength, wherein the device comprises: at least one flow-through chamber (2) having at least one inlet opening (4), at least one outlet opening (6), and at least one peripheral wall (24); at least one laser (8) for emitting light (10) of the absorption wavelength; and at least one detector (18) for detecting the emitted light (10); wherein the laser (8) and the detector (18) are arranged in such a way that the light (10) emitted by the laser (8) is conducted through the flow-through chamber (2) along at least two different paths before said light hits the detector (18), and wherein the device has two lasers (8) which emit light of different wavelengths. The invention further relates to a method for producing a flow-through chamber for such a device.
9 Citations
12 Claims
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1. A device for determining a concentration of a chemical substance dissolved in a liquid, which substance absorbs light of at least one absorption wavelength, comprising:
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at least one flow-through chamber having at least one inlet opening, at least one outlet opening, and at least one peripheral wall; at least two lasers which emit light of differing wavelengths, wherein said at least two lasers include at least one laser for emitting light of the at least one absorption wavelength; and at least one detector for detecting emitted light, wherein at least some of the at least two lasers and the detector being arranged such that emitted light is conducted through the at least one flow-through chamber along at least two different paths before detection by the at least one detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12)
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9. A method for producing a flow-through chamber for a device for determining a concentration of a chemical substance dissolved in a liquid, which substance absorbs light of at least one absorption wavelength comprising
at least one flow-through chamber having at least one inlet opening, at least one outlet opening, and at least one peripheral wall; -
at least two lasers which emit light of differing wavelengths, wherein said at least two lasers include at least one laser for emitting light of the at least one absorption wavelength; and at least one detector for detecting emitted light, wherein at least some of the at least two lasers and the detector being arranged such that emitted light is conducted through the at least one flow-through chamber along at least two different paths before detection by the at least one detector, comprising the following steps; a) producing an indentation in a workpiece, b) positioning at least one peripheral wall element in the indentation, the peripheral wall element being a substrate produced in a coating method and mirror-covered at least in one reflection segment, c) closing the indentation with a lid element. - View Dependent Claims (10)
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11. A method for producing a flow-through chamber for a device for determining a concentration of a chemical substance dissolved in a liquid, which substance absorbs light of at least one absorption wavelength comprising
at least one flow-through chamber having at least one inlet opening, at least one outlet opening, and at least one peripheral wall; -
at least two lasers which emit light of differing wavelengths, wherein said at least two lasers include at least one laser for emitting light of the at least one absorption wavelength; and at least one detector for detecting emitted light, wherein at least some of the at least two lasers and the detector being arranged such that emitted light is conducted through the at least one flow-through chamber along at least two different paths before detection by the at least one detector, comprising the steps of; a) providing a mold, b) carrying out casting by filling the mold with a chamber material, c) hardening the chamber material in the mold, d) removing the hardened chamber material from the mold, the mold and the chamber material being such that the hardened chamber material forms a flow-through chamber having at least one portion of the peripheral wall and at least one reflection segment.
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Specification