Pressure sensor embedded in a metering device

A method of operating a metering device, comprising:

• receiving a flow of water through a pathway of the metering device, where the pathway is defined in part by an area of resiliently deformable material, and wherein water pressure against a wet-side surface of the area of resiliently deformable material moves a deformable electrode of a capacitor;
• generating a signal, by operation of a circuit comprising the capacitor, wherein a capacitance of the capacitor is based at least in part on a shape of the deformable electrode of the capacitor, and wherein the signal is based at least in part on a capacitance of the capacitor;
• determining, by operation of a processor, a frequency of the signal;
• determining, based at least in part on the frequency, a value of the water pressure;
• and
• outputting the value of the water pressure.

A pressure-sensing device for a metering device, comprising:

• a deformable electrode of a capacitor, wherein the deformable electrode is mounted in contact with a dry-side surface of an area of a resiliently deformable material, wherein the resiliently deformable material defines at least part of a pathway to contain a flow of water to be measured by the metering device, and wherein the area of the resiliently deformable material is configured to change a location and a shape of the deformable electrode in response to changes in water pressure;
• a fixed electrode of the capacitor, wherein the fixed electrode is held in a fixed location, and wherein the fixed electrode is separated from the deformable electrode by a dielectric material;
• and
• a circuit to determine a pressure of the water based at least in part on a capacitance between the deformable electrode and the fixed electrode.