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What is the differential pressure rating for the HMIPSP units to be installed in a purged cabinet?

The critical components will be LCD and the gasket between touch screen and front bezel. We also need to consider the reliability design could go bad under too big pressure. Since the target is just to avoid the dust go into the cabinet, we commit on 1.5 atm (atmospheric pressure) Pressure inside the cabinet is enough and will not damage LCD and gasket, even under the long term of pressure.
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