CHEN Hui-yun1, CHENG Jia2, HUANG Zhen-wei2, et al. Research and fabrication of an electrical driving double pistons gas flow standard device[J]. 2013, 32(1): 87-90.
CHEN Hui-yun1, CHENG Jia2, HUANG Zhen-wei2, et al. Research and fabrication of an electrical driving double pistons gas flow standard device[J]. 2013, 32(1): 87-90. DOI: 10.13873/j.1000-97872013.01.009.
In order to solve the problem that maximum calibration flow of gas prover is limited by the piston cylinder volume
a double pistons gas prover is developed.Two pistons of the prover run alternately and continuousty generate standard flow and calibration principle of the device is explained and calibration model is studied according to calibration specification and flow characteristics of flow meter.Software and hardware design of the device is introduced.It’s proved that repeatability of the device is prior to 0.05 % by testing of the repeatability.It can be used for calibration of critical flow meter.