© National Instruments Corporation 61 NI 4070/4072 Calibration Procedure
4-Wire Resistance

Note Tolerances are provided for 4-wire resistance instead of absolute limits because the

limits depend on the actual resistance value output by your calibrator.

2-Wire Resistance

Note Tolerances are provided for 2-wire resistance instead of absolute limits because the

limits depend on the actual resistance value output by your calibrator.

Table 17. NI 4070/4072 4-Wire Resistance Verification Tolerances

Calibrator
Resistance Range
2-Year Tolerance
(ppm of Range)
24-Hour Tolerance
(ppm of Range)
10MΩ10 MΩ±410 ppm ±102 ppm
1MΩ1MΩ±100ppm ±22ppm
100kΩ100 kΩ±86 ppm ±17 ppm
10kΩ10 kΩ±83 ppm ±14 ppm
1kΩ1kΩ±83ppm ±14 ppm
100Ω100 Ω±90 ppm ±25 ppm
0Ω10MΩ±10 ppm ±2ppm
0Ω1MΩ±10ppm ±2 ppm
0Ω100kΩ±6 ppm ±2 ppm
0Ω10kΩ±3 ppm ±2 ppm
0Ω1kΩ±3ppm ±2ppm
0Ω100Ω±10 ppm ±10 ppm

Table 18. NI 4070/4072 2-Wire Resistance Verification Tolerances

Calibrator
Resistance Range
2-Year Tolerance
(ppm of Range)
24-Hour Tolerance
(ppm of Range)
0Ω10kΩ±40 ppm ±20 ppm
0Ω1kΩ±400ppm ±200ppm
0Ω100Ω±4000 ppm ±2000ppm
100MΩ100 MΩ±6040 ppm ±920 ppm
10MΩ10 MΩ±410 ppm ±102 ppm
1MΩ1MΩ±100ppm ±22ppm