A display of “Calibration–expired—” means that the period of time, for which the meter was calibrated, has now elapsed. The meter will still continue to operate, but its accuracy specifications are no longer guaranteed until it is recalibrated. When the flowmeter calibration expired indicator displays, the flowmeter can be recalibrated by requesting recalibration (cat.# 22656-R) from Restek Corporation.
My ProFLOW 6000 flowmeter displays “Calibration–expired–” when I turn it on. Does it still work?
30 Jul 2025
Author
GNOT5219
