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

Claim 3:
4. The method of claim 3, further comprising, when the one or more of the flowmeters are recalibrated relative to the fifth flow rate, verifying the accuracy of the device under test, wherein the verifying comprises:
establishing a steady state flow of the calibration fluid through the flowpath in the closed loop mode;
measuring a sixth flow rate of the calibration fluid through the device under test;
concurrently or near in time with measuring the sixth flow rate, an updated fourth flow rate is measured through the at least one bank of flowmeters;
the sixth flow rate is compared to the updated fourth flow rate to determine a new accuracy of the device under test; and
when the new accuracy of the device under test does not meet the second maximum uncertainty requirement, the device under test is calibrated relative to the updated fourth flow rate.