What is the acceptable range of readings between correctly functioning pressure gauges on SCBA?

The acceptable range of readings between correctly functioning pressure gauges on self-contained breathing apparatus (SCBA) is 10% of each other. This standard is crucial for ensuring that the gauges accurately reflect the same pressure level, allowing firefighters to have a reliable understanding of the air supply available. If the readings fall within a 10% variance, it indicates that the gauges are in proper working condition and can be trusted for safety during operations.

Having a standardized range is important in emergency situations, as discrepancies in gauge readings can lead to miscalculations about air supply duration, potentially putting firefighters at risk. By adhering to this 10% guideline, it ensures that both gauges provide similar information, preventing misunderstandings that could arise from a more significant difference in readings.