< back to main site

Publications

Accurate and adjustable calibration gas flow by switching permeation and diffusion devices.

Martin, N A; Goody, B A; Wang, J; Milton, M J T (2012) Accurate and adjustable calibration gas flow by switching permeation and diffusion devices. Meas. Sci. Technol., 23 (10). 105005

Full text not available from this repository.

Abstract

A new method for generating adjustable concentrations of calibration gases from permeation and diffusion devices is described. The method achieves high accuracy by maintaining the source device at a constant temperature and pressure and in a constant gas flow. It involves switching the gas stream and subsequently smoothing it to generate dilutions of up to 100 with a relative uncertainty of ± 2%. Its dynamic performance has been modelled and its performance under steady-state conditions has been validated.uncertainty of ± 2%. Its dynamic performance has been modelled and its performance under steady-state conditions has been validated.

Item Type: Article
Subjects: Analytical Science
Analytical Science > Gas Standards
Identification number/DOI: 10.1088/0957-0233/23/10/105005
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/5561

Actions (login required)

View Item View Item