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Method for determining a measurand associated with extinction and corresponding sensor arrangement

A sensor device and a technology to be measured are applied in the direction of measuring devices, color/spectral characteristic measurement, transmittance measurement, etc., and can solve problems such as incomplete and complex systems

Active Publication Date: 2021-09-21
ENDRESSHAUSER CONDUCTA GMBHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, this is complex and not always possible for continuously operating systems

Method used

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  • Method for determining a measurand associated with extinction and corresponding sensor arrangement
  • Method for determining a measurand associated with extinction and corresponding sensor arrangement
  • Method for determining a measurand associated with extinction and corresponding sensor arrangement

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Embodiment Construction

[0028] The claimed sensor device has the reference number 10 and is in Figure 2a and Figure 2b described in . In principle the device is similar to that of the prior art (see figure 1 ); so only the differences are discussed here. exist figure 1 Lenses or other optical elements 6 capable of diverging, focusing, linearizing, parallelizing, shielding or deflecting light are not shown.

[0029] The depicted window 2 is designed as an optical window, for example made of glass or plastic.

[0030] A significant difference is that the claimed sensor device 10 comprises two optical path lengths OPL1 and OPL2, wherein these optical path lengths are different from each other. Figure 2a An embodiment with a light source 1 and a detector 3 is shown. Figure 2b An embodiment with two light sources 1 and two detectors 3 is shown, one light source and one detector per optical path. For the claimed method, either of two completely different sensors can be used as long as the respec...

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PUM

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Abstract

The invention relates to a method and a corresponding sensor arrangement for determining a measurand related to extinction. A method for determining an extinction-related measurand in a medium is disclosed, comprising the steps of: irradiating light into the medium and measuring the extinction (21, 22, 23) after a first path length (OPL1); Light is irradiated into the medium and extinction is measured (31, 32, 33) after a second path length (OPL2), where the first path length (OPL1) is different from the second path length (OPL2), and using the first path length ( The extinction (21, 22, 23) after OPL1) and the extinction (31, 32, 33) after the second path length (OPL2) determine the measurands associated with the extinction. Furthermore, a sensor device (10) for carrying out the method is disclosed.

Description

technical field [0001] The invention relates to a method for determining a measurand related to extinction. The invention also relates to a sensor device for carrying out the method. Background technique [0002] One measurand related to extinction is, for example, concentration. Optical sensors used to determine the concentration of substances in a medium typically operate at ultraviolet (UV), visible (VIS), near-infrared (NIR) and / or mid-infrared (MIR) light wavelengths. Therefore, extinction measurements are generally performed. In the following, the problem shall be described with a measurand of concentration, but may similarly be described with an additional measurand related to extinction. [0003] The measuring principle for determining the concentration is based on the Lambert-Beer law. For low and medium concentrations, there is a linear correlation between the extinction of light and the concentration of the analyte, given by: [0004] [0005] E is extinct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G01N21/31G01N21/59
CPCG01N21/25G01N21/31G01N21/59G01N21/0303G01N2201/062G01N21/51
Inventor 蒂洛·克拉施梅尔拉尔夫·伯恩哈特马蒂亚斯·格罗斯曼
Owner ENDRESSHAUSER CONDUCTA GMBHCO