Device and method for carrying out a contactless measurement of the conductivity of a liquid situated in a flow channel
First Claim
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1. A device for contact-free measurement of the conductivity of a liquid in a flow channel, comprising:
- only one toroidal coil, wherein the toroidal coil is adapted to be arranged around the flow channel; and
an analyzer circuit connected to the toroidal coil;
wherein neither the toroidal coil nor the analyzer circuit contacts the liquid in the flow channel.
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Abstract
The invention relates to a device and method for carrying out a contactless measurement of the conductivity of a liquid situated in a flow channel, and to the use of said device and method. According to the invention, the invention provides that a toroidal coil is precisely arranged around the flow channel. Said toroidal coil is interconnected with a capacitor to an oscillating circuit. The invention also provides that the electric characteristics of this circuit are then measured according to the conductivity which is sought after.
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Citations
15 Claims
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1. A device for contact-free measurement of the conductivity of a liquid in a flow channel, comprising:
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only one toroidal coil, wherein the toroidal coil is adapted to be arranged around the flow channel; and
an analyzer circuit connected to the toroidal coil;
wherein neither the toroidal coil nor the analyzer circuit contacts the liquid in the flow channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of performing contact-free conductivity measurement of a liquid in a flow channel, comprising the steps of:
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disposing only one toroidal coil around the flow channel;
connecting an analyzer circuit to the toroidal coil;
measuring electric properties of the toroidal coil; and
calculating the conductivity from the measured electric properties with the analyzer circuit;
wherein the method is performed without the use of an electrode. - View Dependent Claims (14, 15)
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Specification