EP 4052057 A1 20220907 - DEVICE FOR MEASURING AN AMOUNT OF SUPERPARAMAGNETIC MATERIAL AND USE OF SUCH A DEVICE
Title (en)
DEVICE FOR MEASURING AN AMOUNT OF SUPERPARAMAGNETIC MATERIAL AND USE OF SUCH A DEVICE
Title (de)
VORRICHTUNG ZUR MESSUNG EINER MENGE EINES SUPERPARAMAGNETISCHEN MATERIALS UND VERWENDUNG EINER SOLCHEN VORRICHTUNG
Title (fr)
DISPOSITIF DE MESURE D'UNE QUANTITE DE MATERIAU SUPERPARAMAGNETIQUE ET UTILISATION D'UN TEL DISPOSITIF
Publication
Application
Priority
- FR 1912272 A 20191031
- FR 2020051550 W 20200909
Abstract (en)
[origin: WO2021084169A1] The invention relates to a device (10) for measuring an amount of superparamagnetic material, the device comprising a pair of measuring coils (P1) and a pair of compensating coils (P2), the coils of a pair (P1, P2) being identical to each other. The device also includes at least one direct current generator (GDC), a low-frequency generator (GBF), and a high-frequency generator (GHF), the generators (GDC, GBF, GHF) being coupled to the first and second pairs (P1, P2) to inject into each of the coils (P1A, P1B, P2A, P2B) a current having a DC component, a high-frequency component and a low-frequency component, such that the magnetic fields generated by the coils of the same pair are identical. The device also comprises a detector of a component of an electric voltage set at a mixing frequency which is a linear combination of the first and the second frequency.
IPC 8 full level
G01R 33/04 (2006.01); G01N 27/74 (2006.01); G01N 33/543 (2006.01); G01R 33/028 (2006.01); G01R 33/12 (2006.01)
CPC (source: EP US)
G01N 27/745 (2013.01 - EP); G01N 33/54326 (2013.01 - EP); G01R 33/0076 (2013.01 - US); G01R 33/028 (2013.01 - EP US); G01N 27/745 (2013.01 - US); G01R 33/1276 (2013.01 - 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)
WO 2021084169 A1 20210506; EP 4052057 A1 20220907; FR 3102851 A1 20210507; FR 3102851 B1 20211112; US 12013446 B2 20240618; US 2024036125 A1 20240201
DOCDB simple family (application)
FR 2020051550 W 20200909; EP 20780249 A 20200909; FR 1912272 A 20191031; US 202017755479 A 20200909