公开(公告)号：US09910004B2

公开(公告)日：2018-03-06

申请号：US15168399

申请日：2016-05-31

Applicant: Tecan Trading AG

Inventor： Markus Schoeni ,  Philipp Ott ,  Lars Kamm ,  Paul Zbinden

IPC: G01R27/08 ,  G01N27/22 ,  G01F23/00 ,  G01F23/26 ,  G01N35/10 ,  G01N1/10

CPC classification number: G01N27/22 ,  G01F23/0069 ,  G01F23/265 ,  G01F23/266 ,  G01N1/10 ,  G01N35/1011 ,  G01N2035/1018

Abstract: A capacitively operating apparatus (100) has a container, a probe (3) movable into and/or out of the container, an input signal generator connectable to the probe (3) to provide an input signal (sin(t)) which produces at least one output signal (sout(t) in the probe (3), and a measuring apparatus (M) connectable to the probe (3) to tap the output signal (sout(t)) from the probe (3), and wherein the probe (3) is periodically chargeable and dischargeable, the output signal (sout(t)) corresponds to the time progression of a charging/discharging curve which is produced by the periodic charging and discharging of the probe (3). The apparatus (100) also includes a circuit module (10, 11) with two comparators for providing a first comparator output signal (PWM1) and a second comparator output signal (PWM2) from the output signal (sout(t)) and to correlate them with one another.

公开(公告)号：US10309820B2

公开(公告)日：2019-06-04

申请号：US14806036

申请日：2015-07-22

Applicant: TECAN Trading AG

Inventor： Philipp Ott ,  Lars Kamm ,  Markus Schöni ,  Remo Keller ,  Paul Zbinden

IPC: G01N35/10 ,  G01F23/26 ,  G01F23/00

Abstract: A method and device for distinguishing between a contacting of foam (2) or of liquid (1) in a liquid container (5) of a device (100) by employing a capacitively operating measuring device (M) having a sensor (3) which can be moved up and down in the liquid container (5), in which at least one output signal (sout(t)) is processed by the measuring device (M).