US 12,405,181 B2
Flow-through pressure transducer
Markus Diener, Elsenfeld (DE); Lukas Spieler, Mespelbrunn (DE); Rolf Bloecher, Miltenberg (DE); and Thomas Rothenbach, Buergstadt (DE)
Assigned to Wika Alexander Wiegand SE & Co. KG, Main (DE)
Filed by WIKA Alexander Wiegand SE & Co. KG, Klingenberg (DE)
Filed on Feb. 16, 2024, as Appl. No. 18/444,620.
Application 18/444,620 is a continuation of application No. 17/473,654, filed on Sep. 13, 2021, granted, now 11,913,850.
Application 17/473,654 is a continuation of application No. PCT/EP2020/056661, filed on Mar. 12, 2020.
Claims priority of application No. 10 2019 106 342.6 (DE), filed on Mar. 13, 2019.
Prior Publication US 2024/0192070 A1, Jun. 13, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01L 9/00 (2006.01); G01L 19/00 (2006.01); G01L 19/14 (2006.01)
CPC G01L 9/0032 (2013.01) [G01L 9/0027 (2013.01); G01L 19/0038 (2013.01); G01L 19/0061 (2013.01); G01L 19/0092 (2013.01); G01L 19/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A measuring system for a physical variable, the measuring system comprising:
a housing;
a measuring tube comprising:
at least one tubular deformation body having a cross-section which is deformed at least partially in a defined manner deviating from a circular cross-section and which is configured to expand elastically under pressure;
two feed sections which are each attached to end sections of the deformation body and which each have a circular cross-section at outer edge sections thereof;
two sealing sections for sealingly coupling the measuring system to a process, the sealing sections being integrally formed to the outer edge sections of the feed sections; and
two molded support sections which carry the housing;
a measuring sensor system configured to measure values of at least one of a stretching and a widening at at least two points on a section of the deformation body; and
an evaluation unit configured to electronically evaluate measured values of the at least one of the stretching and widening and to output them as a measurement signal,
wherein the housing at least partially surrounds and stabilizes the measuring tube on an outside in a direction of extension of the measuring tube, and
wherein the feed sections are solid, and the feed sections comprise a transition of the inner contour from circular to oval.