середньоквадратичне відхилення

The  article proposes  an  approach  to  the  research of  the metrological  reliability  of measurements  taking  into account the conditions and operating modes of measuring equipment, based on the intermediate control of the standard deviation of  the measurement  results.  The  above  approach  is  relevant  because  it  allows  laboratories  to  reasonably  set  the  recalibration intervals  of  measuring  equipment  based  on  the  control  of  standard  deviations.  The  requirement  for  reasonable  setting  of recalibration intervals for measuring instruments is a common worldwide

This paper presents the results of equivalent measurements of electrical resistance of two identical resistive coils. It is suggested that the difference between the RMS of investigated coils is formed as result of their non-equilibrium states. The energy spectrum of resistance fluctuations of investigated coils and the frequency range within which the energy spectrum changes unsignificantly, are determined.