US 12,253,475 B2
Measuring device for determining a dielectric value
Thomas Blödt, Steinen (DE); and Olaf Textor, Lörrach (DE)
Assigned to Endress+Hauser SE+Co. KG, Maulburg (DE)
Appl. No. 17/753,788
Filed by Endress+Hauser SE+Co. KG, Maulburg (DE)
PCT Filed Aug. 20, 2020, PCT No. PCT/EP2020/073399
§ 371(c)(1), (2) Date Mar. 15, 2022,
PCT Pub. No. WO2021/052706, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10 2019 124 825.6 (DE), filed on Sep. 16, 2019.
Prior Publication US 2022/0381703 A1, Dec. 1, 2022
Int. Cl. G01N 22/00 (2006.01)
CPC G01N 22/00 (2013.01) 10 Claims
OG exemplary drawing
 
1. A measuring device for determining a dielectric value of a medium, comprising:
a measuring sensor, including:
a first electrically conductive electrode;
a measuring rod;
a second electrically conductive electrode; and
a high-frequency unit designed to couple a high-frequency signal into the first electrode and to determine the dielectric value of the medium on the basis of a corresponding reflection signal,
wherein the first electrode is wound on the measuring rod and can be brought into contact with the medium,
wherein the second electrode is rod-like and disposed inside the measuring rod and electrically insulated from the measuring rod,
wherein the second electrode extends along a region of the measuring rod on which the first electrode is wound, and
wherein the second electrode serves as ground potential for the high-frequency signal or the reflection signal.