A category 3 moisture indicator shall indicate when the relative humidity of the dental air exceeds _ at line pressure and temperature?

A category 3 moisture indicator is specifically designed to assess the moisture content in the air supplied to dental equipment. The correct threshold for indicating excessive relative humidity is 40%. When the relative humidity exceeds this level, it could signify that moisture is present at a level that may negatively affect dental tools and equipment, potentially leading to operational issues or complications during procedures.

By monitoring and signaling when humidity rises above this threshold, dental facilities can take proactive measures to manage moisture levels, thus ensuring optimal operation of their air supply systems. The choice of 40% as the correct threshold aligns with industry standards regarding the acceptable limits for humidity in environments where precision and equipment longevity are critical.