UME Gas Flow Rate Measurement Systems and the New Wind Tunnel with LDA
作者单位：TUBITAK-Ulusal Metroloji Enstitusu （UME） Gebze41470KocaeliTurkey TUBITAK-Ulusal Metroloji Enstitusu （UME） Gebze41470KocaeliTurkey
会议名称：《The 12～(th) International Conference on Flow Measurement》
会议日期：2004年
学科分类：08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程]
关 键 词：LDA wind tunnel test rig flow velocity flow rate calibration and traceability.
摘 要：正 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 wilt 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.