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Title: Development Of Prototype Low - Flow Rate Test Rig Applicable For Highly Volatile Liquids
Author: Ryouji D Ihara Takashi Shimada Kar-Hooi Cheong Yoshiya Terao
Source: 2015 International Symposium on Fluid Flow Measurement
Year Published: 2015
Abstract: A prototype flow rig has been developed, of wh ich flow rate range is from 60 L/h down to 0.02 L/h. The test rig has consisted of a gravimetric weighing tank and a syringe pump. A flowmeter has been calibrated using the syringe pump to overcome issues on low - flow rate of volatile liquids and on a standing method. For this purpose the syringe pump system was designed employing a servo - motor, a precise ball screw and a linear encoder. The gravimetric sy stem has been improved to reduce influence of evaporation and outflow pipe contact. The syringe pulse factor s ha ve be en calibrated using the gravimetric system in all flow rates with light oil and in dustrial gasoline and they all agree within 0.02%. Preliminary expanded uncertainties of the prototy pe test rig are estimated to be 0.060% for mass flow and 0.068% for vo lumetric flow

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