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Calibration and Measurement Capabilities
Mass and related quantities |
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| In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a2 + b2]1/2 |
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| Result of the search |
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Your selection : Mass and related quantities, Fluid flow, Fluid flow, Volume gas flow rate, Volume gas flow rate
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| | | United States, NIST (National Institute of Standards and Technology) |
| | Complete CMCs in Mass and related quantities for United States (.PDF file) | | | Volume gas flow rate. Gas flow meters, 0.0004 dm3/s to 1.67 dm3/s | | Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.07 | | Laminar flow meter, positive displacement, differential pressure, turbine, rotameter, wet gas meter, ultrasonic, vortex meter | | Fluid: non-corrosive, non-toxic gases | | Pressure: 100 kPa to 2.5 MPa | | Temperature: 23 °C ± 2 °C | | Approved on 12 March 2007 | | Internal NMI service identifier: NIST/18010CD |
| | | Volume gas flow rate. Gas flow meters, 0.333 dm3/s to 33.3 dm3/s | | Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.05 to 0.07 | | Laminar flow meter, positive displacement, differential pressure, turbine, rotameter, wet gas meter, ultrasonic, vortex meter | | Fluid: air, nitrogen | | Pressure: 100 kPa to 2.5 MPa | | Temperature: 23 °C ± 2 °C | | Uncertainty depends on the gas specie used and rate of flow
Approved on 12 March 2007 | | Internal NMI service identifier: NIST/18010CE |
| | | Volume gas flow rate. Gas flow meters, 14.4 dm3/s to 1290 dm3/s | | Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.10 | | Laminar flow meter, positive displacement, differential pressure, turbine, rotameter, wet gas meter, ultrasonic, vortex meter | | Fluid: dry air | | Pressure: 100 kPa to 0.700 MPa | | Temperature: 23 °C ± 2 °C | | Pipe sizes: 25 mm to 200 mm
Approved on 12 March 2007 | | Internal NMI service identifier: NIST/18010CF |
| | | Volume gas flow rate. Gas flow meters, 0.0167 dm3/s to 1290 dm3/s | | Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.12 to 0.16 | | Laminar flow meter, positive displacement, differential pressure, turbine, rotameter, wet gas meter, ultrasonic, vortex meter | | Fluid: non-corrosive, non-toxic gases | | Pressure: 100 kPa to 2.5 MPa | | Temperature: 23 °C ± 2 °C | | Uncertainty depends on rate of flow
Approved on 12 March 2007 | | Internal NMI service identifier: NIST/18010CH |
| | | Volume natural gas flow rate meter factor. Working standard turbine meters, 0.125 m3/s to 9 m3/s | | Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.40 to 0.22 | | Ultrasonic, turbine, coriolis, differential pressure | | Fluid: natural gas | | Pressure: 7.5 MPa ± 1.2 MPa | | Temperature: 20 °C ± 8 °C | | Pipe size: 200 mm to 750 mm | | Mass flow uncertainty: 0.22 % to 0.41 %, DUT uncertainty: 0.05 %, DUT density uncertainty: 0.053%, all at 95% confidence. Uncertainty depends on rate of flow.
Approved on 03 July 2012 | | Internal NMI service identifier: NIST/18010CG |
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