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Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Time and Frequency for Mexico (.PDF file)
Frequency. Standard frequency source, 5 MHz
Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 5.0E-13
Remote frequency standard
Averaging time: 1 day
GPS common-view comparison using multichannel GPS receiver
Approved on 25 February 2009
 
Frequency. General frequency source, 1 MHz to 100 MHz
Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 2.0E-13
Direct frequency measurement
Averaging time: 2 days
Approved on 25 February 2009
 
Frequency. Frequency counter, 1 MHz to 100 MHz
Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 2.0E-13
Direct frequency measurement
Averaging time: 2 days
Approved on 25 February 2009
 
Absolute pressure gas medium. Low pressure gauges, 1 kPa to 120 kPa
Absolute expanded uncertainty (k = 2, level of confidence 95%) in Pa: 0.5 to 2.5
Direct comparison with standard
Temperature: 20 °C
Internal NMI service identifier: CENAM/720-F002-002
 
Mass. Weight, 1 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0005
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 2 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0005
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 5 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0005
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 10 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0005
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 20 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0005
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 50 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0007
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 100 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0008
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 200 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0010
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 500 mg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0025
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 1 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.003
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 2 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.0035
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 5 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.005
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C062-CC
 
Mass. Weight, 10 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.005
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C064-CC
 
Mass. Weight, 20 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.006
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C064-CC
 
Mass. Weight, 50 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.009
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C064-CC
 
Mass. Weight, 100 g
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mg: 0.012
Subdivision
Temperature: 20 °C
Humidity: 40 % to 60 %
Pressure: 81 kPa
Approved on 04 December 2011
Internal NMI service identifier: CENAM/730-F008-C064-CC