Dual mode - mass flow verification - and mass flow in front of the direction of delivery and corresponding method

摘要

Mass flow supplying in front of the direction of the masses flow supplying a fluid and for mass flow verification of the fluid, wherein the mass flow in front of the direction of delivery comprises:a chamber (130; 230; 430);an inlet valve (120; 220; 420), which is configured, the flow of the fluid in the chamber (130; 230; 430) to control or regulate the;an outlet valve (150; 250; 450), which is configured, the flow of the fluid from the chamber (130; 230; 430) to control or regulate the;a pressure sensor (170; 270; 470), which is configured, a pressure within the chamber (130; 230; 430) to be measured; anda controller (160; 260; 460);the controller (160; 260; 460) is configured in a first mode the opening and closing of the intake valve (120; 220; 420) and of the exhaust valve (150; 250; 450) to regulate a measurement of the flow rate of the fluid by means of a device (110) to verify;the controller (160; 260; 460) is further configured in a second mode the opening and closing of the inlet - and of the exhaust valve (120; 220; 420, 150; 250; 450) is to be regulated, in order to achieve a desired amount of fluid from the chamber (130; 230; 430) into an output of processing a direction, andthe controller (160; 260; 460) is configured to receive an input signal, the a choice between the first and the second mode, and in response to the receiving input signal in a first or second mode to operate;the controller (160; 260; 460) is configured in the second mode a mass of the fluid to measure which, during a period of time into the chamber (130; 230; 430) flows, and then a desired mass of the fluid into an output processing to provide a direction, by moving the opening and closing of the intake valve (120; 220; 420) and of the exhaust valve (150; 250; 450) regulates.