The new back-purging filter from WITT prevents the clogging of filters, significantly extending the service life of gas analysers.
The back-purging device comes in a separate housing and serves as an analysis gas inlet filter on in-line gas analysers. It is particularly useful when the analysis gas is contaminated or contains particulate material, e.g. when packing powdered products.
The new device registers the accumulation of particles on the filter, from the resultant line pressure increase. If the filter gets clogged, the filter element is cleaned by repeated pressure surges counter-current to the analysis gas. The dissolved contaminants are collected in a collecting bag.
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