B A Goody and M J T Milton 2002 Meas. Sci. Technol. 13 1138 doi:10.1088/0957-0233/13/7/323
B A Goody and M J T Milton
Show affiliationsA high-accuracy gas flow dilutor has been developed using mass flow controllers operating at flow rates ordered in terms of factors of two. It uses a novel self-referencing calibration procedure to generate variable dilutions with a typical accuracy of ±0.4%. There is no requirement for calibration to any external standard of flow. A detailed analysis of the uncertainty of configurations giving constant total gas and constant complementary gas flow is presented. Applications of the dilutor to the analysis of standard gas mixtures and to testing the linearity of gas analysers are demonstrated.
47.80.-v Instrumentation and measurement methods in fluid dynamics
Issue 7 (July 2002)
Received 4 April 2002, accepted for publication 15 May 2002, in final form 13 May 2002
Published 20 June 2002
B A Goody and M J T Milton 2002 Meas. Sci. Technol. 13 1138
L Johansson et al 1992 Phys. Scr. 46 221
Joseph M Alcamo et al 2008 Environ. Res. Lett. 3 010202
M. Nonino et al. 2009 ApJS 183 244
Matt Johnston et al 2009 Environ. Res. Lett. 4 014004
Patricia Thornley 2008 Environ. Res. Lett. 3 014004
Q Chen and J D Meiss 1989 Nonlinearity 2 347
Dean-Yi Chou et al. 2009 ApJ 706 909
Shilong Piao et al 2009 Environ. Res. Lett. 4 044012
Yoonbai Kim et al JHEP10(2009)022