🔥 Diaphragm Gas Meter: Four Chambers, Crank Turns, Leakage Error and Base-Condition Volume (2D section)

Cut-away section of a two-diaphragm gas meter. Set the gas flow, displacement per crank turn, pressure, temperature, starting loss and leak size, and watch the four chambers fill and empty, the register count and the error curve. The flow and 4.0 L per cycle match the 3D meter, with four in-page numerical checks.