Filters

A filter is used to trap unwanted particles possibly existing in gas stream such that they do not reach the point-of-use of the gas. Membrane and ceramic type filters have a 100% filtration efficiency, and can remove particles having a size of 0.01 micron. The lifespan of filters varies with particle size, particle density in the gas stream, operating duty cycle, etc. When the pressure drop between upstream to downstream across a filter increases by 50%, the filter is becoming clogged with particles and should be replaced.