Chemical analyzer probe with chemical selective filter

摘要

A chemical analyzer probe includes a gland extending from a tubular end to a second gland end connectable to a chemical analyzer. The gland has a sealing surface that seals to the opening. A porous tubular filter is joined to the tubular end of the gland and forms a filter cavity holding a filter fluid. A coating on the porous tubular filter is formed of a chemically selective material that allows a first chemical in the process fluid to flow into the filter fluid, while excluding a second chemical in the process fluid. A sensor couples to the filter fluid for sensing and connectable to a chemical analyzer through the second gland end.