National Measurement Institute (NMI)

Site

Impedance Standards Project

Accreditation No.

1

Site No.

14443

Date of Accreditation

08 Sep 2000

Address

36 Bradfield Road
Lindfield West, NSW 2070
Australia

measurement.gov.au

Contact

Ms Charmaine Kwan P: +61 (02) 84673836

Availability

Services conditionally available to external clients

National Measurement Institute (NMI) address map

Scope of Accreditation

Print scopes
Impedance Standards Project

ISO/IEC 17025 (2017)

Calibration

  • The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
Service Product Determinant Technique Procedure Limitations
DC and low frequency electrical metrology - Electrical standards Conductance boxes; Precision resistors; Resistance boxes Resistance Comparison with a primary realisation; Comparison with a reference standard

from 10 μΩ to 100 TΩ

Capability

With Calibration and Measurement Capability of -

Resistance

Relative Expanded Uncertainty / (μΩ/Ω)Typical Current / Voltage

10 μΩ

10

32 A

>10 μΩ to <100 μΩ

20

10 A to 32 A

100 μΩ

2

10 A

>100 μΩ to <1 mΩ

2

3.2 A to 10 A

1 mΩ

 1

3.2 A

>1 mΩ to <10 mΩ

2

1 A to 3.2 A

10 mΩ

0.5

1 A

>10 mΩ to <100 mΩ

1

320 mA to 1 A

100 mΩ

0.3

320 mA

>100 mΩ to <1 Ω

1

100 mA to 320 mA

1 Ω

0.15

100 mA

>1 Ω to <10 Ω

0.3

32 mA to 100 mA

10 Ω

0.15

32 mA

>10 Ω to <100 Ω

0.3

10 mA to 32 mA

100 Ω

0.15

10 mA

>100 Ω to <1 kΩ

0.3

3.2 mA to 10 mA

1 kΩ

0.15

3.2 mA

>1 kΩ to <10 kΩ

0.3

1 mA to 3.2 mA

10 kΩ

0.15

1 mA

>10 kΩ to 1 MΩ

1

0.1 mA to 1 mA

>1 MΩ to <10 MΩ

2

10 V to 100 V

10 MΩ

1

10 V to 100 V

>10 MΩ to <100 MΩ

2

10 V to 100 V

10 MΩ to 100 MΩ

300

>100 V to 1000 V

100 MΩ

2

50 V to 100 V

>100 MΩ to 1 GΩ

500

>100 V to 1000 V

1 GΩ

5

100 V

>1 GΩ to 100 GΩ

1000

100 V to 1000 V

>100 GΩ to <1 TΩ

3000

100 V to 1000 V

1 TΩ

2000

100 V to 1000 V

>1 TΩ to 10 TΩ

3000

100 V to 1000 V

>10 TΩ to 100 TΩ

30000

100 V to 1000 V
DC and low frequency electrical metrology - Electrical standards Current shunts Resistance Comparison with a reference standard

10 μΩ to 1 mΩ

Capability

With Calibration and Measurement Capability of - 

Nominal value
Relative Expanded Uncertainty / (μΩ/Ω)
Current 
10 µΩ
2030 A to  100 A
10 μΩ
200>100 A to 1000 A
100 µΩ
510 A to 100 A
100 µΩ
10>100 A to 1000 A
1 mΩ
33 A to 100 A
1 mΩ
5>100 A to 1000 A
DC and low frequency electrical metrology - Electrical standards Inductive voltage dividers Voltage ratio Comparison with a primary realisation; Comparison with a reference standard from 40 Hz to 63 Hz with input voltages from 100 V to 1000 V
from 400 Hz to 1 kHz with input voltages from 100 V to 1000 V
from 50 Hz to 5 kHz with input voltages from 5 V to 50 V

Capability

With Calibration and Measurement Capability of -

Expanded Uncertainty / (nV/V)

5 V to 50 V100 V to 1000 V
40 Hz to 50 Hz-1
> 50 Hz to 63 Hz101
> 63 Hz to 400 Hz1010
> 400 Hz to 1 kHz1050
> 1 kHz to 2 kHz10-
> 2 kHz to 5 kHz
100-
DC and low frequency electrical metrology - Electrical standards Inductors Inductance Comparison with a primary realisation; Comparison with a reference standard

from 10 μH to 11 H

Capability

With Calibration and Measurement Capability of -

8 nH from 10 μH to 500 μH
30 μH/H from above 500 μH  to below 10 mH
10 μH/H from 10 mH to 1.1 H
30 μH/H from 1.1 to 11 H
DC and low frequency electrical metrology - Electrical standards Precision capacitors Capacitance Comparison with a primary realisation; Comparison with a reference standard

from 1 pF to 1 μF

Capability

With Calibration and Measurement Capability of - 



Relative expanded uncertainty / (μF/F)


1000 Hz, 1592 Hz400 Hz to 5000 Hz
1 pF to 100 pFFused-silica standard capacitor0.08
100 pF to 10000 pFStandard capacitor, gas dielectric0.1
1 pF to 1000 pFStandard capacitor, gas dielectric

2
1 nF to 10 nFStandard capacitor

20
10 nF to 1μF
Standard capacitor

200

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