EP 3563122 A1 20191106 - VIBRONIC MEASURING SYSTEM FOR MEASURING A MASS FLOW RATE
Title (en)
VIBRONIC MEASURING SYSTEM FOR MEASURING A MASS FLOW RATE
Title (de)
VIBRONISCHES MEßSYSTEM ZUM MESSEN EINER MASSENDURCHFLUßRATE
Title (fr)
SYSTÈME DE MESURE VIBRONIQUE POUR LA MESURE D'UN DÉBIT MASSIQUE
Publication
Application
Priority
- DE 102016015657 A 20161229
- DE 102017106211 A 20170322
- EP 2017080095 W 20171122
Abstract (en)
[origin: WO2018121930A1] The invention relates to a measuring system comprising a measuring and operation electronic unit (ME) and a transducer device electrically coupled thereto. The transducer device (MW) has at least one tube, through which fluid flows during operation and which is caused to vibrate meanwhile, a vibration exciter (41), two vibration sensors (51, 52), on the inlet and outlet sides, respectively, for generating vibration signals (s1, s2), and two temperature sensors (71, 72), on the inlet and outlet sides, respectively, for generating temperature measurement signals (θ1, θ2), said temperature sensors being coupled to a wall of the tube in a thermally conductive manner. The measuring and operation electronic unit (ME) is electrically connected to each of the vibration sensors (51, 52) and to each of the temperature sensors (71, 72) and also to the at least one vibration exciter (41). The measuring and operation electronic unit (ME) is designed to feed electrical power into the at least one vibration exciter (41) in order to effect mechanical vibrations of the tube (11) by means an electrical excitation signal (e1). Furthermore, the measuring and operation electronic unit (ME) is designed to generate a mass flow sequence (Xm), namely a series of temporally successive mass flow measurement values (xm,i) representing the instantaneous mass flow rate (m) of the fluid, by means of each of the vibration signals (s1, s2) and each of the temperature measurement signals (θ1, θ2) in such a way that, at least for a reference mass flow rate (mref), namely a specified mass flow rate of a reference fluid flowing through the transducer device, the mass flow measurement values (xm,i → xm,ref) are independent of the temperature difference (Δθ).
IPC 8 full level
G01F 1/84 (2006.01); G01F 1/74 (2006.01); G01F 15/02 (2006.01); G01F 25/00 (2006.01)
CPC (source: EP US)
G01F 1/74 (2013.01 - EP US); G01F 1/78 (2013.01 - US); G01F 1/8436 (2013.01 - EP); G01F 1/8477 (2013.01 - EP); G01F 15/02 (2013.01 - EP); G01F 15/022 (2013.01 - EP); G01F 25/10 (2022.01 - EP); G01F 1/8409 (2013.01 - US); G01F 1/8413 (2013.01 - US); G01F 1/8422 (2013.01 - US); G01F 1/8436 (2013.01 - US); G01F 1/845 (2013.01 - US); G01F 1/8468 (2013.01 - US); G01F 1/8477 (2013.01 - US); G01F 1/8495 (2013.01 - US); G01F 1/86 (2013.01 - US); G01F 15/022 (2013.01 - US); G01F 15/024 (2013.01 - US); G01F 25/10 (2022.01 - US); G01K 3/04 (2013.01 - US)
Citation (search report)
See references of WO 2018121930A1
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)
WO 2018121930 A1 20180705; CN 110114641 A 20190809; CN 110114641 B 20210803; EP 3563122 A1 20191106; US 11125596 B2 20210921; US 2020124452 A1 20200423
DOCDB simple family (application)
EP 2017080095 W 20171122; CN 201780080694 A 20171122; EP 17816482 A 20171122; US 201716474719 A 20171122