National (State Primary) Standard of Electrical Resistance Unit
Maintenance of the unit of electrical resistance of 1 Ohm, 100 Ohm.
Transferring of the size of the unit of electrical resistance to the secondary standards with the method of comparisons with the help of the comparator and transitional measures in the range from 1·10-3 Ohms to 1·1014 Ohms.
Metrological characteristics | |
Range | 12906,4035 Oh |
Uncertainty by type А (uA) | 5⋅10-9 |
Uncertainty by type В (uB) | 1⋅10-8 |
Total standard uncertainty (uC) | 1,1⋅10-8 |
Extended uncertainty (U) | 2,2⋅10-8 |
Equipment that is part of the standard:
- quantum measure of resistance to the Hall effect MI 6800A
- MI AccuBridge DC bridge comparator
- mobile precision standard type SR103 IET LABS
- Guildiline 6622A-HV resistance bridge with Guildline 6623A-3 range extender
- tera-Ohm bridge resistance Guildiline 6530-XP
- Guildline 6623A-450 range expander