Admittance meter for monitoring a medium
AssigneeIfm Electronic GmbH
InventorsJaromir Palata, Jochen Gundlach
Life of this patent
Estimating the term…
Abstract
An admittance meter having an electrical alternating signal source, a diode ring operated as a synchronous rectifier with at least four diodes connected in series and in the same direction in succession, a measuring sensor, and an evaluation unit. The diode ring is subjected to an alternating signal via first second feed points, which are each connected via two series-connected diodes. The measuring sensor is connected to the first feed point, and the evaluation unit is connected to a first or a second measurement point of the diode ring. The first and second measurement points are each connected via one diode to the first and second feed points, respectively.
Claims15
An admittance meter comprising:
- a diode ring operated as a synchronous rectifier including at least four diodes connected in series and in the same direction in succession, first and second feed points, and first and second measuring points, the first and second feed points being interconnected via two of the diodes, the first measurement point being connected via one of the diodes to the first feed point, second measurement point being connected via another one of the diodes to the second feed point;
- an alternating signal source connected to the first and second feed points;
- an evaluation unit connected to one of the first and second measurement points;
- and
- a measuring sensor connected to the first feed point and embodied as a resonator.
A method for admittance measurement of a medium, comprising the steps of:
- assembling a circuit that includes a diode ring operated as a synchronous rectifier including at least four diodes connected in series and in the same direction in succession, first and second feed points, and first and second measuring points, the first and second feed points being interconnected via two of the diodes, the first measurement point being connected via one of the diodes to the first feed point, second measurement point being connected via another one of the diodes to the second feed point, an alternating signal source connected to the first and second feed points, an evaluation unit connected to one of the first and second measurement points, and a measuring sensor resonator connected to the first feed point;
- and
- using the circuit to determine the proportion of oil present in the medium by comparing a measured bell curve with a reference bell curve.
Dependencies are inferred from the claim text.