Method for evaluating performance of chemical filter for cleanin

Details Method for evaluating performance of chemical filter for cleanin Method for evaluating performance of chemical filter for cleanin

1997-12-18

2000-01-04

Williams, Hezron

Measuring and testing

Instrument proving or calibrating

Gas or liquid analyzer

73 2404, 73 2901, 7386323, G01N 2100

Patent

active

060097396

ABSTRACT:
A method for evaluating performance of a chemical filter element is disclosed. A moisture content, a weight or a pressure loss of a filter element including an ion exchanger is determined, and the determined value is compared with a prescribed value. Alternatively, the determined value is converted into a residual ion exchange capacity of the filter element, and the residual ion exchange capacity is compared with a prescribed value. When the determined value or the residual ion exchange capacity is equal to or less than the prescribed value, the filter element is exchanged. On the other hand, when the determined value or the residual ion exchange capacity is more than the prescribed value, after waiting a prescribed period, the determining step and the comparing step are repeated.

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European-596441 Abstract.

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