EP 1322922 A2 20030702 - METHOD FOR DETECTING THE LIMIT STATE OF A MATERIAL, AND DEVICE THEREFOR
Title (en)
METHOD FOR DETECTING THE LIMIT STATE OF A MATERIAL, AND DEVICE THEREFOR
Title (de)
VERFAHREN ZUR ERFASSUNG DES GRENZSTANDES EINES GUTES UND VORRICHTUNG HIERZU
Title (fr)
PROCEDE DE DETECTION DE L'ETAT LIMITE D'UNE MATIERE ET DISPOSITIF ASSOCIE
Publication
Application
Priority
- DE 20016962 U 20000927
- DE 10115150 A 20010327
- EP 0110813 W 20010919
Abstract (en)
[origin: WO0227349A2] The invention relates to a method and device for detecting the limit state of a material having a given dielectric constant. To this end, the invention uses a holding device, inside of which two electrically conductive rods are arranged. When a limit state is attained, said rods are immersed into the material to be monitored and are connected to an electric circuit. Said circuit generates high-frequency transmit pulses, which are fed to the rods via the line according to the principle of time-domain reflectometry. The signals reflected into the air by the boundary layer of the material are evaluated on the basis of their waveform.
IPC 1-7
IPC 8 full level
G01F 23/284 (2006.01)
CPC (source: EP)
G01F 23/2845 (2013.01)
Citation (search report)
See references of WO 0227349A2
Citation (examination)
EP 1128169 A1 20010829 - ENDRESS HAUSER GMBH CO [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0227349 A2 20020404; WO 0227349 A3 20021024; AU 1818302 A 20020408; CA 2423781 A1 20030326; CA 2423781 C 20090224; CN 1250944 C 20060412; CN 1466674 A 20040107; EP 1322922 A2 20030702; JP 2004519661 A 20040702
DOCDB simple family (application)
EP 0110813 W 20010919; AU 1818302 A 20010919; CA 2423781 A 20010919; CN 01816386 A 20010919; EP 01985756 A 20010919; JP 2002530876 A 20010919