How does gas meter diaphragm work?

A gas meter diaphragm works by using a flexible diaphragm that separates two chambers within the meter. As gas flows through the meter, it exerts pressure on one side of the diaphragm, causing it to flex. This movement is mechanically linked to a series of gears and a counter that registers the volume of gas passing through the meter. The diaphragm's oscillation allows the meter to accurately measure gas flow, converting the mechanical movement into a readable total on the display.