Patent ID: 11959788
Assignee: AVL LIST GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A method for measuring a mass flow rate, a density, a temperature or a flow velocity with the measuring system as recited in claim 1, the method comprising:
in a first measuring range, in which the first valve is closed, using measured values of the second Coriolis measuring device with a lower maximum flow rate as output values of the mass flow rate, the density, the temperature or the flow velocity;
in a second measuring range, in which the first valve remains closed and a flow rate and a pressure are greater than a flow rate and a pressure in the first measuring range,
measuring and weighting measured values of the first Coriolis measuring device with the higher maximum flow rate and the measured values of the second Coriolis measuring device with a lower maximum flow rate as a function of a differential pressure of the second Coriolis measuring device so as to obtain weighted measured values of the first Coriolis measuring device and of the second Coriolis measuring device, and
calculating output values for the mass flow rate, the density, the temperature or the flow velocity in the computing unit from the weighted measured values of the first Coriolis measuring device and of the second Coriolis measuring device; and

in a third measuring range, in which the first valve is open and a pressure in the bypass line is higher than the pressure in the second measuring range, using the measured values of the first Coriolis measuring device with the higher maximum flow rate as output values for the mass flow rate, the density, the temperature or the flow velocity.