Patent ID: 6993985
Filing Date: 2006-02-07
Classification: G01N

Abstract:
1. A fluid stream sampler for variable flow rate controlled air sampling, the sampler comprising: (a) a housing body having a vacuum outlet opening formed therein, a sampling port inlet formed therein, and a flowpath extending between the outlet opening and the inlet; (b) a volumetric flow rate indicator disposed in the flowpath between the vacuum outlet opening and the sampling port inlet; (c) a hose, fluidly connected at one end to a vacuum source, has a fitting at the other end thereof that is insertable into the vacuum outlet opening; (d) an adjustable damper panel interposed in the flowpath regulates the vacuum pressure within the housing body; whereby a vacuum imparted by the vacuum source directs a fluid stream through the housing body along the flowpath between the vacuum outlet opening and the sampling port inlet such that, upon moving the damper panel to a desired position within the flowpath, a desired volumetric flow rate is achieved as measured by the indicator, the desired volumetric flow rate corresponding to a preferred flow rate specified for a fluid constituent sampling medium interposed in the flowpath at the sampling port inlet.