Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from

Title: New System For The Pressurized Gas Flow Standard In Japan
Author: Dr.Masahiro Ishibashi, Dr.Masaki Takamoto, And Noriyuki Watanabe
Source: 1990 International Symposium on Fluid Flow Measurement
Year Published: 1990
Abstract: Outline and some test results of the new pressurized gas flow standard system in Japan are described. Reynolds number of the system ranges from 8E+03 (8 and the 3rd power of 10) to 1E+06. The system consists of a constant volume tank system and a closed loop test facility. Uncertainty of the tank system was estimated at less than 0.1% at the 95% confidence level. Test lines of the facility are not opened to the atmosphere in order to carry out tests with pressurized dry air. Air in the line is circulated by a blower compressor. The master meter of the facility is a servo PD meter which is going to be calibrated by sonic venturi nozzles connected in parallel. Dual loop temperature control system can settle temperature in the line with a variation of 0.1K. Random uncertainty of the facility was estimated at less than 0.1%. A graph of the Strouhal numbers of a vortex meter measured by the facility at various pressure shows one continuous curve against Reynolds numbers.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.

Copyright © 2022