CLAS Certificate Number 2004-01

Company name	Measurements International Ltd.
Company address	118 Commerce Drive PO Box 2359 Prescott, Ontario K0E 1T0
Contact	Ryan Brown Telephone: 613-925-5934 Fax: 613-925-1195 Email: ryanbrown@mintl.com
Clients served	All interested parties
Fields of calibration	Electrical
Accreditation body	Standards Council of Canada (SCC)
ISO/IEC 17025	SCC File number: 15611 First issued 2004-05-25 Issue 6.0e 2024-07-03

This CLAS Certificate is published by the CLAS service of the National Research Council of Canada (NRC) in cooperation with the laboratory accreditation program of the accreditation body. The accreditation body recognizes the capability of the named laboratory for being able to perform calibrations as per the listed Calibration and Measurement Capabilities with metrological traceability to the International System of Units (SI) or to standards acceptable to CLAS. See supplementary notes.

Electrical

Measured Quantity & Range or Instrument	Expanded Measurement Uncertainty	Type of Service	Remarks
Resistance, DC
1 μΩ to 10 μΩ	500 to 20 μΩ/Ω	I	For the calibration of resistors using a current comparator bridge and associated range extenders.
10 μΩ to 100 μΩ	20 to 2 μΩ/Ω
100 μΩ to 1 mΩ	2 to 0.9 μΩ/Ω
1 mΩ to 10 mΩ	0.9 to 0.22 μΩ/Ω
10 mΩ to 100 mΩ	0.22 to 0.17 μΩ/Ω
100 mΩ to 1 Ω	0.17 to 0.1 μΩ/Ω
1 Ω to 10 Ω	0.1 to 0.19 μΩ/Ω
10 Ω to 100 Ω	0.19 to 0.22 μΩ/Ω
100 Ω to 1 kΩ	0.22 to 0.25 μΩ/Ω
1 kΩ to 10 kΩ	0.25 to 0.1 μΩ/Ω
13 kΩ	0.2 μΩ/Ω
10 kΩ to 100 kΩ	0.15 to 0.27 μΩ/Ω		For the calibration of resistors using a high resistance bridge.
100 kΩ to 1 MΩ	0.27 to 0.37 μΩ/Ω
1 MΩ to 10 MΩ	0.37 to 0.64 μΩ/Ω
10 MΩ to 100 MΩ	0.64 to 2 μΩ/Ω
100 MΩ to 1 GΩ	2 to 8.5 μΩ/Ω
1 GΩ to 10 GΩ	8.5 to 35 μΩ/Ω		For the calibration of resistors using a Dual Source Bridge. Uncertainty will depend on calibration voltage.
10 GΩ to 100 GΩ	35 to 45 μΩ/Ω
100 GΩ to 1 TΩ	45 to 60 μΩ/Ω
1 TΩ to 10 TΩ	60 to 210 μΩ/Ω
10 TΩ to 100 TΩ	210 to 1000 μΩ/Ω
100 TΩ to 1 PΩ	1000 to 10000 μΩ/Ω
Voltage DC
1 V	1.2 μV/V	I	For the calibration of DC voltage using: Binary Voltage Divider (BVD) DVM in series opposition Voltage Divider
10 V	0.7 μV/V
100 mV to 10 V	2 μV/V
10 V to 30 V	2 μV/V
30 V to 300 V	2 μV/V
300 V to 1000 V	2 μV/V
Voltage Ratio, DC
1 V	1.0 μV/V	I	Measured from full scale to 10 % of full scale in each range using the linearity specification of the DVM 3458A. The maximum ratio for each range is 10:1.
10 V	0.5 μV/V	I
Current DC
1 mA to 10 mA	5 to 10 μA/A	I	Source: For the calibration of current shunts and current sources using associated range extenders.
10 mA to 100 A	3 to 13 μA/A
100 A to 400 A	13 to 50 μA/A
10 pA to 1 mA	560 to 5 μA/A		Source: for the calibration of current measuring devices using a voltage source and resistors.
Resistance Ratio, DC
100:1	5×10-5	I	Measure resistance ratios up to 150 A using range extenders.
1000:1	5×10-4	I
10:1 Resistance Ratios
0.1 Ω to 1 Ω	0.05 parts per 10⁶	I	For the calibration of the ratio errors of DC current comparator bridges using resistors to generate a resistance ratio.
1 Ω to 10 Ω	0.05 parts per 10⁶
10 Ω to 100 Ω	0.05 parts per 10⁶
100 Ω to 1 kΩ	0.05 parts per 10⁶
1 kΩ to 10 kΩ	0.05 parts per 10⁶
1 kΩ to 13 kΩ	0.05 parts per 10⁶
10 kΩ to 100 kΩ	0.08 parts per 10⁶
100 kΩ to 1 MΩ	0.1 parts per 10⁶
1 MΩ to 10 MΩ	0.15 parts per 10⁶
10 MΩ to 100 MΩ	1.5 parts per 10⁶
1:1 Resistance Ratios
1 Ω to 1 Ω	0.03 parts per 10⁶	I	For the calibration of the ratio errors of DC current comparator bridges using resistors to generate a resistance ratio.
10 Ω to 10 Ω	0.03 parts per 10⁶
100 Ω to 100 Ω	0.03 parts per 10⁶
1 kΩ to 1 kΩ	0.03 parts per 10⁶
10 kΩ to 10 kΩ	0.03 parts per 10⁶
100 kΩ to 100 kΩ	0.10 parts per 10⁶
1 MΩ to 1 MΩ	0.12 parts per 10⁶
10 MΩ to 10 MΩ	0.15 parts per 10⁶
100 MΩ to 100 MΩ	1.5 parts per 10⁶
1 Ω to 0.1 Ω	0.2 parts per 10⁶	I	For the calibration of direct current comparator range extenders using resistors to generate a resistance ratio.
10 Ω to 1 Ω	0.2 parts per 10⁶
10 Ω to 0.1 Ω	0.2 parts per 10⁶
10 Ω to 0.01 Ω	0.3 parts per 10⁶
10 Ω to 0.001 Ω	0.3 parts per 10⁶
100 Ω to 0.01 Ω	2 parts per 10⁶
100 Ω to 0.001 Ω	10 parts per 10⁶
High Resistance Meters
Direct Reading
1 MΩ	15 μΩ/Ω	I	For the calibration of high resistance meters using standard resistors.
10 MΩ	15 μΩ/Ω
100 MΩ	15 μΩ/Ω
1 GΩ	45 μΩ/Ω
10 GΩ	150 μΩ/Ω
100 GΩ	200 μΩ/Ω
1 TΩ	200 μΩ/Ω
10 TΩ	500 μΩ/Ω
100 TΩ	1800 μΩ/Ω
Measurement Ratio 10:1
10 MΩ	15 μΩ/Ω	I	For the calibration of high resistance meters using standard resistors to generate a resistance ratio.
100 MΩ	15 μΩ/Ω
1 GΩ	50 μΩ/Ω
10 GΩ	150 μΩ/Ω
100 GΩ	220 μΩ/Ω
1 TΩ	300 μΩ/Ω
10 TΩ	600 μΩ/Ω
100 TΩ	1400 μΩ/Ω
Measurement Ratio 100:1
100 MΩ	20 μΩ/Ω	I	For the calibration of high resistance meters using standard resistors to generate a resistance ratio.
1 GΩ	50 μΩ/Ω
10 GΩ	140 μΩ/Ω
100 GΩ	200 μΩ/Ω
1 TΩ	220 μΩ/Ω
10 TΩ	400 μΩ/Ω
100 TΩ	1400 μΩ/Ω

Measured Quantity & Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service	Remarks
Resistance, AC
12 kΩ, 24 kΩ	50 & 60 Hz	25 μΩ/Ω	I	For the calibration of resistors using a high voltage capacitance bridge. On-site calibration available.
Current, AC
5 mA to 5 A	50 & 60 Hz	30 μA/A	I	For the calibration of AC current measuring devices using a power calibration system.
Voltage, AC
6 V to 300 V	50 & 60 Hz	30 μV/V	I	For the calibration of AC voltage measuring devices using a power calibration system.
Capacitance
10 pF, 50 pF, 100 pF	50 & 60 Hz	20 μF/F	I	For the calibration of high voltage capacitors using a high voltage capacitance bridge. Both capacitance and dissipation factor are reported, On-site calibration available.
1000 pF	50 & 60 Hz	15 μF/F
1200 pF to 1 µF	50 & 60 Hz	22 μF/F
Capacitance Bridge Ratio Error
Available ratios 1:1, 2:1, 5:1,10:1, 20:1, 50:1, 100:1, 200:1, 500:1 & 1000:1	50 & 60 Hz	20 parts per 10⁶	I	For the calibration of high voltage capacitance bridge ratio errors for voltages up to 100 kV using capacitors to generate a capacitance ratio. Both in-phase and dissipation factor errors are reported.
High Voltage Divider Calibration
Available ratios 1:1, 2:1, 5:1, 10:1, 20:1, 50:1 & 100:1	50 & 60 Hz	20 parts per 10⁶	I	For the calibration of high voltage dividers using capacitance bridges and standard capacitors. Both in-phase and quadrature errors are reported. On-site calibration available
Current Transformers
Available ratios 1000:1 & 2000:1	50 & 60 Hz	15 parts per 10⁶	I	Comparison to standard current transformer. Both in-phase and quadrature errors are reported. On-site calibration available
Current Ratio
Available ratios 1:1, 2:1, 3:1, 5:1 & 10:1	50 & 60 Hz	25 parts per 10⁶	I	For the calibration of current ratio bridges used for the comparison of current transformers. Using current transformers to generate a current ratio. Both in-phase and quadrature errors are reported.
Voltage Ratio
Available ratios 1:1, 2:1, 5:1, 10:1, 20:1, 50:1 & 100:1	50 & 60 Hz	25 parts per 10⁶	I	For the calibration of voltage ratio bridges used for the comparison of voltage transformers. Using voltage transformers to generate a voltage ratio. Both in-phase and quadrature errors are reported.
AC Power
0 W to 1200 W	50 & 60 Hz	30 μW/W	I	For the calibration of ac power measurement devices for voltages up to 240 V and currents up to 5 A at power factors of zero to unity using an AC power calibrator. See Annex A.

Annex A

Examples of best uncertainty, ± (% of applied signal)* for the calibration of ac power measurement devices including watt meters
Applied Signal, V_app x I_app	Scale, V_s x I_s	Power Factor, pf
Applied Signal, V_app x I_app	Scale, V_s x I_s	1	0.5	0.1	0
120 V x 5 mA	120 V x 5 mA	0.003	0.003	0.0033	0.0033
120 V x 10 mA	120 V x 10 mA	0.003	0.003	0.0033	0.0033
120 V x 20 mA	120 V x 20 mA	0.003	0.003	0.0033	0.0033
120 V x 50 mA	120 V x 50 mA	0.003	0.003	0.0033	0.0033
120 V x 100 mA	120 V x 100 mA	0.003	0.003	0.0033	0.0033
120 V x 200 mA	120 V x 200 mA	0.003	0.003	0.0033	0.0033
120 V x 500 mA	120 V x 500 mA	0.003	0.003	0.0033	0.0033
120 V x 1 A	120 V x 1 A	0.003	0.003	0.0033	0.0033
120 V x 2 A	120 V x 2 A	0.003	0.003	0.0033	0.0033
120 V x 5 A	120 V x 5 A	0.003	0.003	0.0033	0.0033
240 V x 5 mA	240 V x 5 mA	0.003	0.003	0.0033	0.0033
240 V x 10 mA	240 V x 10 mA	0.003	0.003	0.0033	0.0033
240 V x 20 mA	240 V x 20 mA	0.003	0.003	0.0033	0.0033
240 V x 50 mA	240 V x 50 mA	0.003	0.003	0.0033	0.0033
240 V x 100 mA	240 V x 100 mA	0.003	0.003	0.0033	0.0033
240 V x 200 mA	240 V x 200 mA	0.003	0.003	0.0033	0.0033
240 V x 500 mA	240 V x 500 mA	0.003	0.003	0.0033	0.0033
240 V x 1 A	240 V x 1 A	0.003	0.003	0.0033	0.0033
240 V x 2 A	240 V x 2 A	0.003	0.003	0.0033	0.0033
240 V x 5 A	240 V x 5 A	0.003	0.003	0.0033	0.0033

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Electrical

Annex A