A static cracking test only shows where a second stage opens. A flow bench shows what happens once gas is moving: how the effort builds, when the Venturi kicks in and how far the IP drops. A clogged filter or a restricted hose shows up here even when the cracking effort looks fine.
Enter your readings for a complete regulator, a second stage or a first stage, up to three runs. The calculator plots effort and IP against flow, works out the IP drop and the effort rise, flags patterns worth a closer look and prints the lot as a PDF test report. The EN-250 limits are drawn as a reference, not as a pass or fail.