Novel Solution for Multi-Phase Semi-Cylindrical Capacitive Sensors

Novel Solution for Multi-Phase Semi-Cylindrical Capacitive Sensors

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An accurate theoretical formulation is presented for a semi-cylindrical parallel plate capacitor, independent of the electrode dimensions.An approximate solution is also presented to relate the changes in capacitance with changing volume-ratio of the multi-phase dielectric filling of the capacitor.Two applications are considered to verify the proposed techniques.In the first application, the calculated capacitance is compared with the measured capacitance of a healthy tree trunk to identify the initial stage Clothing - Junior Bottoms - Pants of pest infestation.In the second application, an approximate capacitance of a three-phase mixture, consisting of gas, oil and brine layers, are used Neff KI1413FF0 N70 In-column Integrated Fridge With FreshSafe to identify the phase-fraction of a petroleum carrying pipeline with a steady-state flow.

The advantage and limitations of the proposed approximate method are studied.In addition to logging and monitoring the oil supply, this simple method can electronically control multi-phase pipes with intravenous injections to collect postoperative fluids from the human body.