Patent ID: 11885663
Assignee: ENDRESS+HAUSER FLOWTEC AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The method of claim 1, further comprising verifying the accuracy of the at least one bank of flowmeters, wherein the verifying comprises:
establishing a steady state flow of the calibration fluid through the flowpath in the closed loop mode;
switching the calibration rig to the open loop mode for a second period such that calibration fluid flowing through the at least one bank of flowmeters during the second period flows into the primary standard;
measuring a fourth flow rate of the calibration fluid through the at least one bank of flowmeters during the second period;
determining a fifth flow rate of the calibration fluid based on the mass of calibration fluid that flows into the primary reference standard during the second period;
comparing the fourth flow rate and fifth flow rate to determine an accuracy of each flowmeter of the at least one bank of flowmeters; and
when the accuracy of the one or more of the flowmeters of the at least one bank of flowmeters does not meet the first maximum uncertainty requirement, recalibrating the one or more of the flowmeters relative to the fifth flow rate.