Patent ID: 11913897
Assignee: FLUIDINSIGHT LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A fluid sensor, comprising:
a microcontroller;
a sensing unit communicatively coupled to the microcontroller, the sensing unit including a driving element and a sensing element, the sensing unit further comprising:
a housing;
an elongated resistance temperature detector having a longitudinal axis and extending within a central bore of the housing;
a plurality of elongated electrode pins arranged axially parallel to and radially surrounding the resistance temperature detector, each electrode pin having a longitudinal axis and extending within a corresponding peripheral bore of the housing; and
a plurality of electrode plates mounted on the electrode pins and oriented orthogonally thereto, the plates being spaced apart at regular intervals in a direction of the longitudinal axis of the resistance temperature detector;

wherein the microcontroller generates a signal to excite the driving element of the sensing unit and receives a signal from the sensing element of the sensor so as to perform a measurement of a complex impedance of a fluid;
wherein the sensing unit is adapted to perform the measurement, the measurement being an electrochemical impedance spectroscopy (EIS) sweep of the fluid; and
wherein a property of the fluid is determined based on the measurement, the property being an electrochemical fingerprint of the fluid, based on impedance exhibited due to a capacitance of the fluid, collected over the EIS sweep.