This unit was used for demonstration has less than 10 hours use, very clean Cyclonic action separates the heavy dust particles from the fine particles and drops them into the 55-gallon steel drum. The fine dust travels past the 15-1/2" diameter impeller and is then trapped by a cartridge filter made of spun-bond polyester that filters 99.9% of particles from 0.2 to 2 microns in size.
Pomona 3302 Shielded Box Fitted as a Low Pass Filter This box was produced when the company was located in Pomona, California. Specifications are the same as for current production. http://www.pomonaelectronics.com/pdf/d3302_1_01.pdf A capacitor and resistor are fitted to make a low pass filter.
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