US 12,169,138 B2
Measuring system for measuring flow including two coriolis flow meters connected in series in a main conduit
Michael Buchner, Graz (AT); and Heribert Kammerstetter, Salzburg (AT)
Assigned to AVL LIST GMBH, Graz (AT)
Appl. No. 17/439,409
Filed by AVL LIST GMBH, Graz (AT)
PCT Filed Mar. 17, 2020, PCT No. PCT/AT2020/060096
§ 371(c)(1), (2) Date Sep. 15, 2021,
PCT Pub. No. WO2020/186279, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 50226/2019 (AT), filed on Mar. 18, 2019.
Prior Publication US 2022/0146293 A1, May 12, 2022
Int. Cl. G01F 15/02 (2006.01); G01F 1/84 (2006.01); G01F 15/18 (2006.01)
CPC G01F 1/8413 (2013.01) [G01F 15/024 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A measuring system for measuring at least one of a mass flow rate, a density, a temperature and a flow rate, the measuring system comprising:
a main conduit which leads from a supply unit to a consumer;
a measuring unit consisting of,
a first Coriolis meter which is arranged in the main conduit,
a second Coriolis meter which is arranged in series with the first Coriolis meter in the main conduit, the second Coriolis meter being designed for a smaller maximum flow rate than the first Coriolis meter,
a bypass conduit via which the second Coriolis meter is bypassable, and
a valve which is arranged in the bypass conduit, the valve being configured to open depending on a pressure;
a computing unit which is connected to each of the first Coriolis meter and the second Coriolis meter; and
a first outlet pressure controller which is arranged in the main conduit downstream of the measuring unit.