National (secondary) gas flow standard-НДЕТУ М-04-2019


The expanded uncertainty of the gas volume and flow rate does not exceed 0.10% (with a coverage factor K = 2 and a confidence level P = 0.95).

Flow range (m3/h):

0.016 - 25.0

Means that can be calibrated on the standard:

critical flow nozzles, reference gas meters

Connecting dimensions (DN, mm):

16, 20, 25, 32, 50

Scientific keeper of the standard:

Volodymyr Hulyk