System for measuring temporally resolved through-flow processes of fluids

A system for measuring temporally resolved through-flow processes of a fluid, the system comprising:

• an inlet;
• a main line comprising a line section;
• an outlet fluidically connected with the inlet via the main line;
• a displacement device configured to be driven in and arranged in the main line;
• a circuitous line which branches off the main line between the inlet and the displacement device and to enter the main line between the displacement device and the outlet;
• a pressure difference transducer arranged in the circuitous line;
• an evaluation and control unit configured to control the displacement device as a function of a pressure difference prevailing at the pressure difference transducer;
• and
• a bypass line comprising a pump and a sensor connected in series, the sensor being configured to measure a physical property or a chemical property of the fluid, the bypass line being arranged to branch off from the main line or from the circuitous line and to end at a same side of the displacement device and the pressure difference transducer so as to bypass the line section of the main line or the circuitous line from which the bypass line branches off.