US 12,429,433 B2
Method for measuring substance quantities in a mixture
Udo Schlemm, Hamburg (DE); and Hendrik Richter, Hamburg (DE)
Assigned to TEWS Elektronik GmbH & Co. KG, Hamburg (DE)
Appl. No. 18/268,696
Filed by TEWS Elektronik GmbH & Co. KG, Hamburg (DE)
PCT Filed Dec. 8, 2021, PCT No. PCT/EP2021/084803
§ 371(c)(1), (2) Date Jun. 21, 2023,
PCT Pub. No. WO2022/135936, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 10 2020 134 372.8 (DE), filed on Dec. 21, 2020.
Prior Publication US 2024/0044809 A1, Feb. 8, 2024
Int. Cl. G01N 22/04 (2006.01)
CPC G01N 22/04 (2013.01) 10 Claims
OG exemplary drawing
 
1. A method for measuring substance quantities (m1, m2) in a substance mixture including two substances (M1, M2), the method comprising:
determining a first moisture value (ϕ1) for a first of the two substances (M1) using a microwave resonator;
determining a second moisture value (ϕ2) for the second of the two substances (M2) using the microwave resonator;
measuring a first measured value (A) and a second measured value (B) for the substance mixture using the microwave resonator, wherein the first measured values (A) comprises a resonance frequency shift, and wherein the second measured value (B) comprises a resonance curve width change;
determining two scalar factors (ϕ1, ϕ2) for two moisture vectors (e1, e2) from the first and the second measured values (A, B) for the substance mixture, wherein each of the two moisture vectors (e1, e2) indicate a direction of a straight line of equal moisture for the first and second substances (M1, M2) in a plane of the first and second measured values (A, B) using the first and second moisture value (ϕ1, ϕ2);
determining a quantity of the first substance and of the second substance (m1, m2) in the substance mixture from the two scalar factors (ϕ1, ϕ2).