Design and Application of Deltaflow under Micro Differential-Pressure Measurement on ACME Facility

Key flowrate measurement technology under micro differential pressure on ACME facility BAMS and PXS was studied,and its application effect was evaluated.Through the improvement of the installation structure of Deltaflow,it is proved that Deltaflow could be used in low-pressure micro differential pressure measurement,where the zero-drift of water flowmeters can be limited in 0.005 kPa.By comparison with the ultrasound flowmeter,it was verified that Deltaflow could obtain good measurement on ACME BAMS.In PXS,the ability of Deltaflow under small flow rate was tested.Through comparison with the ultrasound flowmeter,it was testified that below the minimal flow rate on calculation report,Deltaflow still has certain measurement accuracy,which depends on the zero-drift of differential pressure transmitter.