Global Patent Index - EP 2457067 A1

EP 2457067 A1 20120530 - VIBRATORY TRANSDUCER AND MEASURING DEVICE COMPRISING SUCH A TRANSDUCER

Title (en)

VIBRATORY TRANSDUCER AND MEASURING DEVICE COMPRISING SUCH A TRANSDUCER

Title (de)

MESSWANDLER VOM VIBRATIONSTYP SOWIE MESSGERÄT MIT EINEM SOLCHEN MESSWANDLER

Title (fr)

CONVERTISSEUR DE MESURE DE TYPE À VIBRATIONS AINSI QU APPAREIL DE MESURE DOTÉ D UN TEL CONVERTISSEUR DE MESURE

Publication

EP 2457067 A1 20120530 (DE)

Application

EP 10726082 A 20100622

Priority

  • DE 102009028007 A 20090724
  • EP 2010058799 W 20100622

Abstract (en)

[origin: WO2011009684A1] The invention relates to a transducer, in particular also for the use in a Coriolis mass-flow measuring device, comprising at least one measuring tube (10), which is at least temporarily vibrating during operation, for guiding flowing medium, and a sensor array (50) serving to detect vibrations of the measuring tube (10). The measuring tube extends between a first measuring tube end on the inlet side and a second measuring tube end on the outlet side, having a vibration length (L10) and performing vibrations about a pivoting axis that is parallel or coincident to an virtual connecting axis which imaginarily connects the two ends of the measuring tube, for example in a bending vibration mode. The sensor array generates a first primary transducer signal representing vibrations of the measuring tube (10) by means of a first vibration sensor (51) disposed on the measuring tube (10), and generates a second primary transducer signal representing vibrations of the measuring tube (10) by means of a second vibration sensor (52) disposed on the measuring tube (10) at a distance from the first vibration sensor (51), wherein the length of an area extending between the first and second vibration sensor of the first measuring tube (10) defines a measuring length (L50) of the transducer. In a transducer according to the invention, the vibration sensors of the sensor array are placed in the transducer in such a way that a sensitivity (SIST) of the transducer, with respect to a theoretical sensitivity at a measuring length (L10 = L50) that maximally corresponds to the vibration length, as well as a signal amplitude (AIST) of the primary signals, effectively obtained during operation and with respect to a theoretically maximal possible signal amplitude (AMAX) at the location of a maximal vibration amplitude, meet the condition (I).

IPC 8 full level

G01F 1/84 (2006.01)

CPC (source: EP US)

G01F 1/8409 (2013.01 - EP US); G01F 1/8431 (2013.01 - EP US); G01F 1/8477 (2013.01 - EP US)

Citation (search report)

See references of WO 2011009684A1

Citation (examination)

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 SE SI SK SM TR

DOCDB simple family (publication)

DE 102009028007 A1 20110127; CN 102472652 A 20120523; CN 102472652 B 20141029; EP 2457067 A1 20120530; US 2011023624 A1 20110203; US 8113064 B2 20120214; WO 2011009684 A1 20110127

DOCDB simple family (application)

DE 102009028007 A 20090724; CN 201080033138 A 20100622; EP 10726082 A 20100622; EP 2010058799 W 20100622; US 80525210 A 20100721