At what dew point temperature will the master alarm panels indicate a high alarm from each compressor site for instrument air?

The correct dew point temperature that triggers a high alarm from each compressor site for instrument air is -22ºF. This is significant for ensuring the proper operation of pneumatic systems and instrumentation, as moisture in compressed air can lead to water formation within pneumatic lines and equipment, potentially causing operational issues or failures.

The choice of -22ºF as the threshold is specific to the requirements for ensuring dry air is supplied for instrumentation and control systems. Maintaining air at this dew point minimizes the risk of condensation and water-related problems, which can harm sensitive components and instrumentation used in medical gas systems.

Understanding dew point is essential because it reflects the temperature at which air becomes saturated with moisture. So, setting the alarm at -22ºF ensures that the air remains sufficiently dry for optimal function. The other temperatures, while they might seem reasonable, do not align with the required standard for maintaining instrument air quality.