Conductivity sensor
AssigneeImec Vzw
InventorsGreja Brom-Verheyden, Marcel Zevenbergen, Martijn Goedbloed
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Abstract
The present disclosure relates to a sensor and a measuring system and a sensor network that incorporate one or more such sensors. An example sensor could be configured to measure a conductivity of a liquid. The sensor includes a first electrode and a second electrode, each electrode having a surface area, wherein the surface area of the electrodes determines a cell constant of the sensor (Kcell), and wherein at least one of the electrodes is provided with a switching means arranged so that the surface area of the respective electrode can be changed, thereby varying the cell constant (Kcell) of the sensor.
Claims16
A sensor for measuring a conductivity of a liquid comprising:
- a first electrode having a first surface area;
- a second electrode having a second surface area, wherein the first surface area and the second surface area contribute to an overall surface area of the sensor that is associated with corresponding cell constant of the sensor;
- and
- a switch circuit configured to couple at least one of the first electrode and the second electrode to a circuit to adjust the overall surface area and the corresponding cell constant of the sensor, wherein the switch circuit is configured to be closed to facilitate measurement of a first liquid expected to have a conductivity falling within a first conductivity range, and to be opened to facilitate measurement of a second liquid expected to have a conductivity falling within a second conductivity.
Dependencies are inferred from the claim text.