This standard establis es the methods and means of verification of pulse counters intended for the recording of pulses dis ributed statis ically over time, but excludes pulse counters intended for the recording of periodic signals over time (frequency meters).
NC 90-18-05-1988 history
1988NC 90-18-05-1988 Standards System for Metrological Assurance. Impulse Counters. Methods and Means of Verification