EP 3146299 A1 20170329 - DEVICE FOR MEASURING THE VOLUMETRIC FLOW RATE OF A FLUID
Title (en)
DEVICE FOR MEASURING THE VOLUMETRIC FLOW RATE OF A FLUID
Title (de)
VORRICHTUNG ZUM MESSEN DES VOLUMENSTROMS EINES FLUIDS
Title (fr)
DISPOSITIF DE MESURE DU DÉBIT VOLUMÉTRIQUE D'UN FLUIDE
Publication
Application
Priority
- DE 102014107200 A 20140522
- EP 2015058481 W 20150420
Abstract (en)
[origin: WO2015176891A1] The invention relates to a device for measuring the volumetric flow rate of a fluid (11) flowing through a measurement tube (2) in the direction of the longitudinal axis (3), comprising a coil arrangement (6, 7), at least two measurement electrodes (4, 5) which are coupled to the fluid (11), and a control/analyzing unit (8) which, in connection with the coil arrangement (6, 7), generates a magnetic field (B) that periodically changes the polarity and runs substantially transverse to the longitudinal axis (3) of the measurement tube (2) and which determines the volumetric flow rate of the fluid (11) in the measurement tube (2) during a measurement phase with a substantially constant magnetic field (B) using a voltage induced in the measurement electrodes (4, 5). The control/analyzing unit (8) applies an overvoltage to the coil arrangement (6, 7) during a deceleration phase, and the deceleration phase begins when the polarity of the magnetic field (B) switches and ends when the measurement phase begins. The control/analyzing unit (8) applies a substantially constant holding voltage to the coil arrangement (6, 7) over the duration of the measurement phase, and the control/analyzing unit (8) keeps the ratio of the overvoltage to the holding voltage at a substantially constant value.
IPC 8 full level
G01F 1/60 (2006.01)
CPC (source: CN EP US)
G01F 1/586 (2013.01 - US); G01F 1/60 (2013.01 - CN EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102014107200 A1 20151126; CN 106461433 A 20170222; CN 106461433 B 20191217; EP 3146299 A1 20170329; US 10215602 B2 20190226; US 2017146377 A1 20170525; WO 2015176891 A1 20151126
DOCDB simple family (application)
DE 102014107200 A 20140522; CN 201580026321 A 20150420; EP 15720627 A 20150420; EP 2015058481 W 20150420; US 201515309597 A 20150420