US 12,135,256 B2
Pressure measuring cell including a plastic material for a membrane
Simon Zumbrunnen, Oberburg (CH); Philipp Haslebacher, Burgdorf (CH); and Jürg De Pietro, Sins (CH)
Assigned to ReseaTech GMBH, Burgdorf (CH)
Filed by ReseaTech GMBH, Burgdorf (CH)
Filed on Feb. 24, 2022, as Appl. No. 17/680,029.
Claims priority of application No. 00200/21 (CH), filed on Feb. 25, 2021.
Prior Publication US 2022/0268655 A1, Aug. 25, 2022
Int. Cl. G01L 19/06 (2006.01); G01L 9/06 (2006.01)
CPC G01L 19/0645 (2013.01) [G01L 9/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. Pressure measuring cell comprising
a base body comprising an internal space, said base body having a first opening, wherein the base body comprises a second opening opposite to the first opening, and wherein a covering element is hermetically attached to the base body, so that the covering element fully covers the second opening, and so that the internal space is included by the base body and by the covering element,
a pressure sensor arranged in the internal space of the base body,
a pressure transfer medium arranged in the internal space of the base body, said pressure transfer medium being a liquid, a gel, an oil or a hardened elastomer,
a plastic membrane attached in such a way to the base body that the first opening is fully covered, wherein the membrane comprises an uneven form, and wherein the membrane comprises a metallic coating on at least one side.