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National standard of electrical resistance unit

Developed and operated since 2016

Standard composition:

  • Set of standard equipment to reproduce and store the value of electrical resistance unit;
  • Set of standard equipment for storage and transfer electrical resistance value within the range from 1∙10-4 to 1∙108 Ohm: systems of measuring model 6242В/100А;
  • Set of standard equipment for storage and transfer electrical resistance value within the range from 1∙105 to 1∙1016 Ohm;
  • Precision multimeter Fluke 8508А.

Metrological characteristics:

  • Value of the quantity, reproduced by standard, is 1 Ohm;
  • Relative instability of the standard during 1 year, no more than 0,2∙10-6;
  • the range of electrical resistance value storage is from 1∙10-3 to 1∙1014 Ohm;
  • Relative instability of electrical resistance standard measures during 1 year, withing the range from 1∙10-3 to 1∙1014 Ohm, is from 0,0001 % to 0,5 %;
  • The range of electrical resistance value storage is from 1∙10-4 to 1∙1016 Ohm;
  • Limits of permissible relative error of electrical resistance unit transfer within the range from 1∙10-3 to 1∙109 Ohm is from 0,5∙10-6 to 10∙10-6;
  • Random error of reproduction no more than 5∙10-8 (for nominal value 1 Ohm);
  • Non-excluded systematic error no more than 5∙10-7 (for nominal value 1 Ohm);
  • Expanded error of the size of the unit reproduced by standard (for nominal value 1 Ohm), no more 0,5∙10-6 (k=2, P=95 %).

Sources of traceability:

              Russia, FGUP "VNIIM – D.I. Mendeleev"

Scope:

The standard is aimed to be used in the field of metrological control (verification, calibration, metrological attestation of measuring instruments) and high-accuracy measurements of resistance (at direct current).

 

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