Self-calibrating liquid level transmitter

Abstract From the Canadian patent

The present disclosure generally relates to a capacitance sensing apparatus equipped with self-calibrating capacity and method of use thereof. The disclosure contemplates the determination using a secondary means of precise fluid levels according to five possible embodiments and the use of the determined fluid level to recalibrate the capacitance sensing apparatus along its continuous analog level namely, a variation of the thickness of the insulation of a capacitance sensing apparatus the variation of the surface geometry of the capacitance sensing apparatus the use of a dual-probe sensor including a probe with a varied surface geometry the use of an electromagnetic sensor adjoining the …