What does a gear meter count to determine flow rate?

A gear meter determines flow rate by counting the number of revolutions of the gear shaft. As fluid flows through the meter, it drives the gear mechanism. Each complete revolution of the gear corresponds to a precise volume of fluid that has passed through the meter. By counting these revolutions, the meter can calculate the flow rate accurately.

The key here is understanding that gear meters are specifically designed to measure volumetric flow based on mechanical movement rather than the mass of the fluid or other properties like viscosity. Although the number of gear teeth is part of the design, it is the revolutions of the gear shaft that directly relate to flow measurement in these devices.