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Calibration and Measurement Capabilities
Mass and related quantities
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
 
Result of the search
Your selection : Mass and related quantities, Fluid flow
 
Japan, NMIJ (National Metrology Institute of Japan)
Complete CMCs in Mass and related quantities for Japan (.PDF file)
Air speed. Anemometer, 1.3 m/s to 27.5 m/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: [0.297 + 0.27/(v2 - 0.77v)], v air speed in m/s
Wind tunnel with LDA
Temperature: ambient
Pressure: ambient
Width, height and length of test section: 0.4 m, 0.4 m, 2 m
Approved on 09 January 2014
Internal NMI service identifier: NMIJ/FF-AM-21
 
Air speed. Anemometer, 27.5 m/s to 40 m/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: [-0.0001185v3 + 0.01157v2 - 0.3677v + 4.124], v air speed in m/s
Wind tunnel with LDA
Temperature: ambient
Pressure: ambient
Width, height and length of test section: 0.4 m, 0.4 m, 2 m
Approved on 09 January 2014
Internal NMI service identifier: NMIJ/FF-AM-22
 
Air speed. Anemometer, 0.05 m/s to 1.5 m/s
Absolute expanded uncertainty (k = 2, level of confidence 95%) in m/s: [0.0069 + (0.025v + 0.005)2], v air speed in m/s
Tow carriage in underground tunnel
Temperature: ambient
Pressure: ambient
Width, height and length of test section: 2 m, 2 m, 35 m
Approved on 09 January 2014
Internal NMI service identifier: NMIJ/FF-AS-10
 
Air speed. LDA, 1.3 m/s to 27.5 m/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: [0.091 + 0.22/(v2 - 0.9v)], v air speed in m/s
Spinning disc with fine wire
Temperature: ambient
Pressure: ambient
Focal length: > 250 mm
Approved on 09 January 2014
Internal NMI service identifier: NMIJ/FF-AM-11
 
Air speed. LDA, 27.5 m/s to 40 m/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: [-0.0002386v3 + 0.02331v2 - 0.7409v + 7.801], v air speed in m/s
Spinning disc with fine wire
Temperature: ambient
Pressure: ambient
Focal length: > 250 mm
Approved on 09 January 2014
Internal NMI service identifier: NMIJ/FF-AM-12
 
Air speed. Pilot tube, 40 m/s to 90 m/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.63
Wind tunnel
Temperature: ambient
Pressure: ambient
Test section; open circular, diameter: 100 mm
Approved on 11 April 2019
Internal NMI service identifier: NMIJ/FF-AM-23


 
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