Title:
DEVICE FOR CARRYING OUT THE CAPACITIVE MEASURING OF FILLING LEVELS
Document Type and Number:
WIPO Patent Application WO2005071369
Kind Code:
A8
Abstract:
A device (10) for carrying out the capacitive measuring of filling levels in a reservoir (11) is provided with two interspaced metallic probes (14, 15), which are isolated from one another and from the reservoir contents and which form a measuring capacitor with a capacitance that varies according to the filling level in the reservoir. The inventive device is also provided with a power supply and with an evaluating unit (17) for determining the filling level. In order to carry out a simple and nearly trouble-free measurement, the measuring capacitor is placed in the form of a frequency-determining element in an electrical oscillating circuit, and the evaluating unit (17) contains a microcomputer (30) having a write/read memory, into which the frequencies assigned to the states full and empty after the measurement has been carried out can be read into and stored.
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Inventors:
HOFFMEIER MATTHIAS (DE)
Application Number:
PCT/EP2005/000565
Publication Date:
January 26, 2006
Filing Date:
January 21, 2005
Export Citation:
Assignee:
BAYER FRANK
STEINER KLAUS (DE)
HOFFMEIER MATTHIAS (DE)
STEINER KLAUS (DE)
HOFFMEIER MATTHIAS (DE)
International Classes:
G01F23/26; (IPC1-7): G01F23/26
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