EP 4314794 A1 20240207 - DEVICE FOR THE CAPACITIVE ANALYSIS OF A MOVING ELONGATE TEST OBJECT
Title (en)
DEVICE FOR THE CAPACITIVE ANALYSIS OF A MOVING ELONGATE TEST OBJECT
Title (de)
VORRICHTUNG ZUR KAPAZITIVEN UNTERSUCHUNG EINES BEWEGTEN STRANGFÖRMIGEN PRÜFGUTES
Title (fr)
DISPOSITIF D'ANALYSE CAPACITIVE D'UN OBJET D'ESSAI ALLONGÉ ET MOBILE
Publication
Application
Priority
- CH 3042021 A 20210322
- CH 2022000001 W 20220303
Abstract (en)
[origin: WO2022198341A1] A device (1) for the capacitive analysis of a moving elongate test object (9) contains a first capacitor arrangement (2.1) with a first passage opening (21.1), through which the test object (9) can be moved, and a first capacitor (5.1), the capacitance of which can be influenced by a test object (9) located in the first passage opening (21.1) and which has a first capacitance with no test object (9) present. The device (1) further contains a second capacitor arrangement (2.2) with a second passage opening (21.1) and a second capacitor (5.2) which is arranged at the second passage opening (21.2) and which has a second capacitance. The first capacitor (5.1) and the second capacitor (5.2) are parts of a measuring bridge. The first capacitor arrangement (2.1) and the second capacitor arrangement (2.2) are provided and arranged in such a way that, in the event of a change in temperature over time, a difference between the first capacitance and the second capacitance remains substantially constant. This results in improved temperature stability of the device (1).
IPC 8 full level
G01N 27/22 (2006.01); G01N 33/36 (2006.01)
CPC (source: EP)
G01N 27/226 (2013.01); G01N 33/365 (2013.01)
Citation (search report)
See references of WO 2022198341A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022198341 A1 20220929; CN 117178185 A 20231205; EP 4314794 A1 20240207
DOCDB simple family (application)
CH 2022000001 W 20220303; CN 202280024163 A 20220303; EP 22709553 A 20220303