FLOW TIMER FOR A SAMPLING APPARATUSID50000060991097 IA BODY 2015-06-14

摘要

Sampling systems provide apparatuses for obtaining and assessing the composition of a fluid, typically air. Sampling systems allow industrial hygienists to assess the risks and determine the protective equipment that should be worn by personnel entering a specific environment, in one embodiment, a sampling system comprises a sampling container that draws air into its Inner volume and the sampling periods are controlled by an automatic timer valve. The automatic timer valve may comprise a rotating disk or plate that provides fluid communication from the area to be sampled to the inner volume of the sample bag when apertures are aligned with inlet tube.