Working on a project to certify a flat-panel monitor with touchscreen for use in a purged enclosure. This requires electrical protection of the touchscreen data cable from the touchscreen to an intrinsitically safe barrier. UL requires that the cable either remains 4 inches away from any and all sources of electrical energy, or be effectively protected from those sources. We cannot isolate the cable from several sources of electrical energy inside the monitor, so we must shield the cable with a flexible grounded shield. I would appreciate any ideas anyone might have to accomplish this shielding. We have approached UL with using the braided tubing manufactured by Laird, but it was not acceptable due to the holes in the braid are too large and the current handling was believed to be too little. Tapes are not considered acceptable either, because they are too easy to compromise and can leave gaps for high voltage to jump through. Thanks for any ideas.
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