UME Gas Flow Rate Measurement Systems and the New Wind Tunnel with LDA |
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| Vahit Ciftci, Hakan Kaykisizli |
- Abstract:
- National Metrology Institute of Turkey, UME, has partially completed the new gas flow velocity and gas flow rate measurement systems. In this article UME primary and secondary gas flow measurements systems for air at atmospheric conditions will be explained briefly.
In the new gas flow laboratories, velocity measurements and anemometer calibrations are realized with a 2D Laser Doppler Anemometer .Two dimensional velocity measurements up to 40 m/s can be done in two different tunnels that have dimensions 500 × 500 mm and 250 × 250 mm.
The wind tunnel system is constructed parallel to a gas flow measurement system. This turbine gas meter test rig is designed for a maximum flowrate of up to 19500 m³/h with an uncertainty less than 0,5 %. Another gas meter test rig for air at atmospheric conditions is designed and constructed to operate parallel with a sonic nozzle test rig. This system will be used for gas flowrate calibrations in the range of 50-5000 m³/h. Until the planned sonic nozzle test rig is added to this system, the uncertainty can be declared as 0,3 %. Primary standard Bell Prover and the low flow secondary standards Wet gas meter and Bubble Generators completes the traceability chain for gas flow at atmospheric conditions. - Keywords:
- LDA, wind tunnel, test rig, flow velocity, flow rate, calibration, and traceability
- Download:
- IMEKO-TC9-2004-011.pdf
- DOI:
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