БелГИМ - National standard of electrical resistance unit

National standard of electrical resistance unit

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).