Method of and apparatus for testing the integrity of filters

Details Method of and apparatus for testing the integrity of filters Method of and apparatus for testing the integrity of filters

1983-01-04

1985-05-07

Kreitman, Stephen A.

Measuring and testing

With fluid pressure

Porosity or permeability

73 407, 55 97, G01M 320

Patent

active

045150079

ABSTRACT:
A method of and apparatus for testing the integrity of individual filters or filter stages of a multistage filtering system including a diffuser permanently mounted upstream and/or downstream of the filter stage to be tested for generating pressure differentials to create sufficient turbulence for uniformly dispersing trace agent particles within the airstream upstream and downstream of such filter stage. Samples of the particle concentration are taken upstream and downstream of the filter stage for comparison to determine the extent of particle leakage past the filter stage.

REFERENCES:
patent: 4055075 (1977-10-01), Allan et al.
patent: 4324568 (1982-04-01), Wilcox et al.

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