Abstract: An assembly for and method of sampling particle-laden fluids for particulate content and particle size distribution are disclosed herein and utilized at least one cascade impactor adapted to be placed within the fluid stream to be sampled. This impactor includes a number of spaced, successive particle collection stages provided for collecting particles diminishing in size from stage to stage and specifically designed to prevent the rate of low of the fluid stream from any one stage to the next downstream stage from reaching its critical flow rate. The pressure at these stages is individually monitored utilizing individual transducers located in close proximity to the impactor and a monitor remotely located relative to the impactor.

Abstract: A transfer system for transferring a conductive liquid from a reservoir of the liquid at a first electric potential to receiving equipment which charges the liquid to a second electric potential includes a sump, pump, inlet piping to the sump from the reservoir, and outlet piping from the sump to the receiving equipment. The inlet piping is electrically isolated from the sump. The conductive liquid is introduced into the sump in an interrupted stream to provide electrical isolation between the liquid in the reservoir and the liquid in the sump. The flow of liquid to the sump is controlled by a sensor system to maintain a predetermined level of liquid within the sump.

Abstract: A method and apparatus for removing entrained particulate matter from a gas stream in which the particles are charged with an electrostatic charge of one polarity, droplets of electrostatically charged liquid are sprayed into the gas stream and the resultant mixture injected into a bubble-forming mechanism wherein bubbles are formed by the gas containing the charged particulate matter and liquid droplets. The smaller mass charged particles are attracted toward and collect upon the charged spray droplets or bubbles. Liquid containing the particulate matter then is removed from the gas stream via known techniques.