title: [A device for studying the dynamic response of a gas analyser (author's transl)].
abstract: A mechanical device has been built, enabling one to produce a step change in gas concentration at the inlet of gas analyser. It is made of two chambers filled each with a different gas mixture and sliding rapidly in a cylinder in such a way that the probe from the gas analyser is exposed sequentially to the two gas mixtures. The total translation time is 6 ms. The devise has been used to study the response of a quadrupole mass spectrometer. Both the delay and the response time vary with the gas mixtures and/or the direction of the concentration changes.
mesh_terms: D001128:Argon; D005740:Gases / Q000032:analysis*; D006371:Helium; D013058:Mass Spectrometry / Q000295:instrumentation*; D010100:Oxygen; D013459:Sulfur Hexafluoride
chemical_list: D005740:Gases; D006371:Helium; D001128:Argon; D010100:Oxygen; D013459:Sulfur Hexafluoride
vernacular_title: Dispositif d'étude de la réponse dynamique d'un analyseur de gaz.