US 12,241,831 B2
Measuring facility and method for the measurement of at least two different components of a fluid
Camiel Heffels, Stutensee-Büchig (DE); and Konstantin Harr, Karlsruhe (DE)
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Filed by Siemens Aktiengesellschaft, Munich (DE)
Filed on May 9, 2022, as Appl. No. 17/739,924.
Claims priority of application No. 21173079 (EP), filed on May 10, 2021.
Prior Publication US 2022/0357274 A1, Nov. 10, 2022
Int. Cl. G01N 21/64 (2006.01)
CPC G01N 21/6402 (2013.01) [G01N 2021/6471 (2013.01); G01N 2021/6482 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for measuring at least two different components of a fluid, said method comprising:
feeding the fluid to a first measuring cell and a second measuring cell;
exciting a first component of the fluid in the first measuring cell by a first excitation to trigger a first light emission, wherein the first excitation is a laser excitation and the first light emission is a Raman radiation;
exciting a second component of the fluid in the second measuring cell by a second excitation which is different from the first excitation, wherein the second excitation is realized by dosing a reactant resulting in a chemiluminescence with the second component of the fluid, thereby triggering a second light emission;
capturing the first light emission and the second light emission via an optical system facility;
guiding the first light emission and the second light emission in a direction of a detector facility; and
measuring by the detector facility the first light emission and the second light emission;
wherein the optical system facility comprises a first stage and a second stage different than the first stage, with the first stage provided for spatially filtering the Raman radiation, and with the second stage provided for mapping the spatially filtered Raman radiation onto the detector facility; and
wherein the detector facility is located at one end of the second stage opposite the first measuring cell and the second measuring cell is located in a space between the first stage and the second stage.