Brewer, P J; Goody, B A; Gillam, T*; Brown, R J C; Milton, M J T (2010) High-accuracy stable gas flow dilution using a self-calibrating network of critical flow orifices. Meas. Sci. Technol., 21 (11). 115902

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Abstract

A network of critical flow orifices has been developed to form a gas flow dilutor capable of stable and repeatable operation, which is not influenced by environmental conditions. When used with a novel self-calibration method it achieves dilutions of up to 31:1 with a relative standard uncertainty of ±0.1%. This new approach avoids the uncertainty generated by setting and controlling the flow which is present in devices based on variable flow elements

Item Type:	Article
Subjects:	Analytical Science Analytical Science > Gas Standards
Identification number/DOI:	10.1088/0957-0233/21/11/115902
Last Modified:	02 Feb 2018 13:14
URI:	https://eprintspublications.npl.co.uk/id/eprint/4864