Measuring system for measuring mass flow value, e.g. liquid or gas flow vol

摘要

A connection is also provided at the cylinder on the other side of the piston (2) for the discharge flow (m2). A measuring unit (5) measures the piston displacement based on the mass flow against the return unit is assigned to the piston. The restricted flow-passage opening (11) has a flow cross-section assigned to the piston displacement and an indicating unit is provided for the mass flow value. The through-flow cross-section along the piston displacement is constant. The return force due to a spring rises with an increasing piston displacement. The measuring unit (7) measures the pressure in the cylinder (1) on one side of the piston (2). The piston displacement measuring unit (5) and the cylinder pressure measuring unit (7) are connected to a self-acting computer (8), which has a storage memory, for a digital filter algorithm and a monitor screen (12).