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| | | Mexico, CENAM (Centro Nacional de Metrologia) | | | Complete CMCs in Mass and related quantities for Mexico (.PDF file)
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| Volume water flow rate. Liquid volume flow meters, 0.42 dm3/s to 200 dm3/s | | Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.040 | | Volumetric flowmeter (e.g., positive displacement, rotary piston, turbine, venturi, nozzle, ultrasonic, orifice plate, vortex meter, electromagnetic) | | 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/FV1 |
| | | Volume hydrocarbon flow rate. Oil flow meters, 0.00067 dm3/s to 1.67 dm3/s | | Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.060 | | Volumetric flowmeter (e.g., positive displacement, rotary piston, turbine, ultrasonic) | | Kinematic viscosity: 0.5 mm2/s to 10 mm2/s | | Pressure: 0.3 MPa to 0.6 MPa | | Temperature: 18 °C to 24 °C | | Pipe sizes: 6 mm to 25 mm
Approved on 12 March 2007 | | Internal NMI service identifier: CENAM/FV2 |
| | | 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 |
| | | 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 |
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