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Calibration and Measurement Capabilities - CMCs


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~~CMCs Chemistry~~

CMCs General Physics (291)

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~~Vibration~~

Radio frequency measurements (52)

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Mexico (291)

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Mexico, CENAM (Centro Nacional de Metrologia)

Complete CMCs in Mass and related quantities for Mexico (.PDF file)

Volume hydrocarbon flow rate. Oil flow meters, 0.067 dm³/s to 94.5 dm³/s

Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.080

Volumetric flowmeter (e.g., positive displacement, rotary piston, turbine, ultrasonic)

Kinematic viscosity: 0.5 mm²/s to 10 mm²/s

Pressure: 0.1 MPa to 4 MPa

Temperature: 0 °C to 82 °C

Pipe sizes: 50 mm to 200 mm
Approved on 12 March 2007

Internal NMI service identifier: CENAM/FV3


Volume gas flow rate. Gas flow meters, 0.00083 dm³/s to 0.5 dm³/s
	Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.15
	Volumetric flowmeter (e.g., positive displacement, rotary piston, turbine, venturi, critical nozzle, laminar flow element, rotameter, differential pressure, wet gas meter, ultrasonic, orifice, vortex meter)
	Fluid: dry air
	Pressure: 0.1 MPa to 0.6 MPa
	Temperature: 19 °C to 21 °C
	Pipe sizes: 6 mm to 25 mm Approved on 12 March 2007
	Internal NMI service identifier: CENAM/FV4


Volume gas flow rate. Gas flow meters, 0.5 dm³/s to 30 dm³/s
	Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.25
	Volumetric flowmeter (e.g., positive displacement, rotary piston, turbine, venturi, critical nozzle, laminar flow element, rotameter, differential pressure, wet gas meter, ultrasonic, orifice, vortex meter)
	Fluid: dry air
	Pressure: 0.1 MPa to 0.6 MPa
	Temperature: 19 °C to 21 °C
	Pipe sizes: 6 mm to 100 mm Approved on 12 March 2007
	Internal NMI service identifier: CENAM/FV5


Mass water flow rate. Liquid mass flow meters, 0.42 kg/s to 200 kg/s
	Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.032
	Coriolis
	Fluid: water
	Pressure: 0.1 MPa to 1 MPa
	Temperature: 18 °C to 26 °C
	Pipe sizes: 25 mm to 200 mm Approved on 12 March 2007
	Internal NMI service identifier: CENAM/FV6


Mass gas flow rate. Gas flow meters, 0.001 g/s to 0.6 g/s
	Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.15
	Critical flow nozzle, critical venturi, coriolis
	Fluid: dry air
	Pressure: 0.1 MPa to 0.6 MPa
	Temperature: 19 °C to 21 °C
	Pipe sizes: 6 mm to 25 mm Approved on 12 March 2007
	Internal NMI service identifier: CENAM/FV7


Mass gas flow rate. Gas flow meters, 0.6 g/s to 36 g/s
	Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.25
	Critical flow nozzle, critical venturi, coriolis
	Fluid: dry air
	Pressure: 0.1 MPa to 0.6 MPa
	Temperature: 19 °C to 21 °C
	Pipe sizes: 6 mm to 100 mm Approved on 12 March 2007
	Internal NMI service identifier: CENAM/FV8


Absolute pressure gas medium. Pressure measuring devices, 0.0001 Pa to 1 Pa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 9.00E-03
	Direct comparison with standard
	Temperature: 23 °C
	Internal NMI service identifier: CENAM/720-F006-001


Absolute pressure gas medium. Pressure measuring devices, 1 Pa to 10 Pa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 3.50E-03
	Direct comparison with standard
	Temperature: 23 °C
	Internal NMI service identifier: CENAM/720-F006-001


Absolute pressure gas medium. Pressure measuring devices, 10 Pa to 100 Pa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 2.50E-03
	Direct comparison with standard
	Temperature: 23 °C
	Internal NMI service identifier: CENAM/720-F006-001


Absolute pressure gas medium. Pressure measuring devices, 100 Pa to 1 000 Pa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 2.50E-03
	Direct comparison with standard
	Temperature: 23 °C
	Internal NMI service identifier: CENAM/720-F006-001


Differential pressure gas medium. Low pressure gauges, 5.00E-03 kPa to 150 kPa
	Relative expanded uncertainty (k = 2, level of confidence 95%) in kPa: (15E-06 p_l) + (15E-06 p_s)
	Direct comparison with standard
	Temperature: 20 °C
	Line pressure p_l: p_lmax = 150 kPa
	Standard pressure p_s: p_diff = p_s - p_l
	Internal NMI service identifier: CENAM/720-F002-005


Absolute pressure gas medium. Pressure measuring devices, 10 kPa to 175 kPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 1.50E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F002-001, 002, 003, 004


Gauge pressure gas medium. Pressure measuring devices, 10 kPa to 175 kPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 1.50E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F002-001, 002, 003, 004


Absolute pressure gas medium. Pressure measuring devices, 175 kPa to 350 kPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 1.80E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F002-001, 002, 003, 004


Gauge pressure gas medium. Pressure measuring devices, 175 kPa to 350 kPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 1.80E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F002-001, 002, 003, 004


Absolute pressure gas medium. Pressure measuring devices, 0.35 MPa to 1.75 MPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 2.60E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F002-001, 002, 003, 004


Gauge pressure gas medium. Pressure measuring devices, 0.35 MPa to 1.75 MPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 2.60E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F002-001, 002, 003, 004


Absolute pressure gas medium. Pressure measuring devices, 1.75 MPa to 7 MPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 3.80E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F002-001, 002, 003, 004


Gauge pressure gas medium. Pressure measuring devices, 1.75 MPa to 7 MPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 3.80E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F002-001, 002, 003, 004


Gauge pressure gas medium. Pressure measuring devices, 7 MPa to 80 MPa
	Relative expanded uncertainty (k = 2, level of confidence 95%): 5.00E-05
	Direct comparison with standard
	Temperature: 20 °C
	Internal NMI service identifier: CENAM/720-F001-001, 720-F001-002