CLAS Certificate Number 2004-01

Company name

Measurements International Ltd.

Company address

118 Commerce Drive
PO Box 2359
Prescott ON 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

In this section

Resistance, DC

For the calibration of resistors using a current comparator bridge and associated range extenders.

Resistance, DC - table 1
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
1 μΩ to 10 μΩ	500 to 20 μΩ/Ω	I
10 μΩ to 100 μΩ	20 to 2 μΩ/Ω	I
100 μΩ to 1 mΩ	2 to 0.9 μΩ/Ω	I
1 mΩ to 10 mΩ	0.9 to 0.22 μΩ/Ω	I
10 mΩ to 100 mΩ	0.22 to 0.17 μΩ/Ω	I
100 mΩ to 1 Ω	0.17 to 0.1 μΩ/Ω	I
1 Ω to 10 Ω	0.1 to 0.19 μΩ/Ω	I
10 Ω to 100 Ω	0.19 to 0.22 μΩ/Ω	I
100 Ω to 1 kΩ	0.22 to 0.25 μΩ/Ω	I
1 kΩ to 10 kΩ	0.25 to 0.1 μΩ/Ω	I
13 kΩ	0.2 μΩ/Ω	I

For the calibration of resistors using a high resistance bridge.

Resistance, DC - table 2
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
10 kΩ to 100 kΩ	0.15 to 0.27 μΩ/Ω	I
100 kΩ to 1 MΩ	0.27 to 0.37 μΩ/Ω	I
1 MΩ to 10 MΩ	0.37 to 0.64 μΩ/Ω	I
10 MΩ to 100 MΩ	0.64 to 2 μΩ/Ω	I
100 MΩ to 1 GΩ	2 to 8.5 μΩ/Ω	I

For the calibration of resistors using a Dual Source Bridge. Uncertainty will depend on calibration voltage.

Resistance, DC - table 3
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
1 GΩ to 10 GΩ	8.5 to 35 μΩ/Ω	I
10 GΩ to 100 GΩ	35 to 45 μΩ/Ω	I
100 GΩ to 1 TΩ	45 to 60 μΩ/Ω	I
1 TΩ to 10 TΩ	60 to 210 μΩ/Ω	I
10 TΩ to 100 TΩ	210 to 1000 μΩ/Ω	I
100 TΩ to 1 PΩ	1000 to 10000 μΩ/Ω	I

Voltage DC

For the calibration of DC voltage using:

Binary Voltage Divider (BVD)
DVM in series opposition
Voltage Divider

Voltage DC
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
1 V	1.2 μV/V	I
10 V	0.7 μV/V	I
100 mV to 10 V	2 μV/V	I
10 V to 30 V	2 μV/V	I
30 V to 300 V	2 μV/V	I
300 V to 1000 V	2 μV/V	I

Voltage Ratio, DC

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.

Voltage Ratio, DC
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
1 V	1.0 μV/V	I
10 V	0.5 μV/V	I

Current DC

Source: For the calibration of current shunts and current sources using associated range extenders.

Current DC - table 1
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
1 mA to 10 mA	5 to 10 μA/A	I
10 mA to 100 A	3 to 13 μA/A	I
100 A to 400 A	13 to 50 μA/A	I

Source: for the calibration of current measuring devices using a voltage source and resistors.

Current DC - table 2
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
10 pA to 1 mA	560 to 5 μA/A	I

Resistance Ratio, DC

Measure resistance ratios up to 150 A using range extenders.

Resistance Ratio, DC
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
100:1	5×10^-5	I
1000:1	5×10^-4	I

10:1 Resistance Ratios

For the calibration of the ratio errors of DC current comparator bridges using resistors to generate a resistance ratio.

10:1 Resistance Ratios
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
0.1 Ω to 1 Ω	0.05 parts per 10⁶	I
1 Ω to 10 Ω	0.05 parts per 10⁶	I
10 Ω to 100 Ω	0.05 parts per 10⁶	I
100 Ω to 1 kΩ	0.05 parts per 10⁶	I
1 kΩ to 10 kΩ	0.05 parts per 10⁶	I
1 kΩ to 13 kΩ	0.05 parts per 10⁶	I
10 kΩ to 100 kΩ	0.08 parts per 10⁶	I
100 kΩ to 1 MΩ	0.1 parts per 10⁶	I
1 MΩ to 10 MΩ	0.15 parts per 10⁶	I
10 MΩ to 100 MΩ	1.5 parts per 10⁶	I

1:1 Resistance Ratios

For the calibration of the ratio errors of DC current comparator bridges using resistors to generate a resistance ratio.

1:1 Resistance Ratios - table 1
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
1 Ω to 1 Ω	0.03 parts per 10⁶	I
10 Ω to 10 Ω	0.03 parts per 10⁶	I
100 Ω to 100 Ω	0.03 parts per 10⁶	I
1 kΩ to 1 kΩ	0.03 parts per 10⁶	I
10 kΩ to 10 kΩ	0.03 parts per 10⁶	I
100 kΩ to 100 kΩ	0.10 parts per 10⁶	I
1 MΩ to 1 MΩ	0.12 parts per 10⁶	I
10 MΩ to 10 MΩ	0.15 parts per 10⁶	I
100 MΩ to 100 MΩ	1.5 parts per 10⁶	I

For the calibration of direct current comparator range extenders using resistors to generate a resistance ratio.

1:1 Resistance Ratios - table 2
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
1 Ω to 0.1 Ω	0.2 parts per 10⁶	I
10 Ω to 1 Ω	0.2 parts per 10⁶	I
10 Ω to 0.1 Ω	0.2 parts per 10⁶	I
10 Ω to 0.01 Ω	0.3 parts per 10⁶	I
10 Ω to 0.001 Ω	0.3 parts per 10⁶	I
100 Ω to 0.01 Ω	2 parts per 10⁶	I
100 Ω to 0.001 Ω	10 parts per 10⁶	I

High Resistance Meters - Direct Reading

For the calibration of high resistance meters using standard resistors.

High Resistance Meters - Direct Reading
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
1 MΩ	15 μΩ/Ω	I
10 MΩ	15 μΩ/Ω	I
100 MΩ	15 μΩ/Ω	I
1 GΩ	45 μΩ/Ω	I
10 GΩ	150 μΩ/Ω	I
100 GΩ	200 μΩ/Ω	I
1 TΩ	200 μΩ/Ω	I
10 TΩ	500 μΩ/Ω	I
100 TΩ	1800 μΩ/Ω	I

Measurement Ratio 10:1

For the calibration of high resistance meters using standard resistors to generate a resistance ratio.

Measurement Ratio 10:1
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
10 MΩ	15 μΩ/Ω	I
100 MΩ	15 μΩ/Ω	I
1 GΩ	50 μΩ/Ω	I
10 GΩ	150 μΩ/Ω	I
100 GΩ	220 μΩ/Ω	I
1 TΩ	300 μΩ/Ω	I
10 TΩ	600 μΩ/Ω	I
100 TΩ	1400 μΩ/Ω	I

Measurement Ratio 100:1

For the calibration of high resistance meters using standard resistors to generate a resistance ratio.

Measurement Ratio 100:1
Measured Quantity and Range or Instrument	Expanded Measurement Uncertainty	Type of Service
100 MΩ	20 μΩ/Ω	I
1 GΩ	50 μΩ/Ω	I
10 GΩ	140 μΩ/Ω	I
100 GΩ	200 μΩ/Ω	I
1 TΩ	220 μΩ/Ω	I
10 TΩ	400 μΩ/Ω	I
100 TΩ	1400 μΩ/Ω	I

Resistance, AC

For the calibration of resistors using a high voltage capacitance bridge. On-site calibration available.

Resistance, AC
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
12 kΩ, 24 kΩ	50 and 60 Hz	25 μΩ/Ω	I

Current, AC

For the calibration of AC current measuring devices using a power calibration system.

Current, AC
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
5 mA to 5 A	50 and 60 Hz	30 μA/A	I

Voltage, AC

For the calibration of AC voltage measuring devices using a power calibration system.

Voltage, AC
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
6 V to 300 V	50 and 60 Hz	30 μV/V	I

Capacitance

For the calibration of high voltage capacitors using a high voltage capacitance bridge. Both capacitance and dissipation factor are reported. On-site calibration available.

Capacitance
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
10 pF, 50 pF, 100 pF	50 and 60 Hz	20 μF/F	I
1000 pF	50 and 60 Hz	15 μF/F	I
1200 pF to 1 µF	50 and 60 Hz	22 μF/F	I

Capacitance Bridge Ratio Error

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.

Capacitance Bridge Ratio Error
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
Available ratios 1:1, 2:1, 5:1,10:1, 20:1, 50:1, 100:1, 200:1, 500:1 and 1000:1	50 and 60 Hz	20 parts per 10⁶	I

High Voltage Divider Calibration

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

High Voltage Divider Calibration
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
Available ratios 1:1, 2:1, 5:1, 10:1, 20:1, 50:1 and 100:1	50 and 60 Hz	20 parts per 10⁶	I

Current Transformers

Comparison to standard current transformer. Both in-phase and quadrature errors are reported. On-site calibration available

Current Transformers
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
Available ratios 1000:1 and 2000:1	50 and 60 Hz	15 parts per 10⁶	I

Current Ratio

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.

Current Ratio
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
Available ratios 1:1, 2:1, 3:1, 5:1 and 10:1	50 and 60 Hz	25 parts per 10⁶	I

Voltage Ratio

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.

Voltage Ratio
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
Available ratios 1:1, 2:1, 5:1, 10:1, 20:1, 50:1 and 100:1	50 and 60 Hz	25 parts per 10⁶	I

AC Power

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.

AC Power
Measured Quantity and Range or Instrument	Frequency	Expanded Measurement Uncertainty	Type of service
0 W to 1200 W	50 and 60 Hz	30 μW/W	I

Annex A

Examples of best uncertainty, ± (% of applied signal)* for the calibration of ac power measurement devices including watt meters

Annex A
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

Language selection