(19)
(11) EP 2 136 188 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
28.04.2010 Bulletin 2010/17

(43) Date of publication:
23.12.2009 Bulletin 2009/52

(21) Application number: 09162846.1

(22) Date of filing: 16.06.2009
(51) International Patent Classification (IPC): 
G01F 23/26(2006.01)
 G01F 25/00(2006.01)
(84) Designated Contracting States:
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 TR
Designated Extension States:
AL BA RS

(30) Priority: 18.06.2008 IT PD20080178

(71) Applicant: Dab Pumps S.p.A.
35035 Mestrino (Padova) (IT)

(72) Inventors:
  • Trentin, Enrico
    36053, GAMBELLARA VI (IT)
  • Franchetti, Bruno
    36040, BRENDOLA VI (IT)
  • Sinico, Francesco
    36075, MONTECCHIO MAGGIORE VI (IT)

(74) Representative: Modiano, Micaela Nadia 
Dr. Modiano & Associati SpA Via Meravigli 16
20123 Milano
20123 Milano (IT)

 
Remarks:
Amended claims in accordance with Rule 137(2) EPC.
 


(54) Capacitive liquid level sensor


(57) A level sensor (10) particularly for liquids comprising at least two capacitors (12, 13) arranged side by side, to be immersed in the same liquid (14) whose level is to be measured and having the same capacitance (C, C1) when they are immersed in the liquid (14) but a different geometry (S, S1, D, D1), both capacitors being connected to a control unit (15) that is designed to compare the signals that arrive from the two capacitors.