What device is used to monitor and display air pressure in SCBA equipment?

The device used to monitor and display air pressure in SCBA (Self-Contained Breathing Apparatus) equipment is a mask-mounted pressure gauge. This gauge is an integral part of the SCBA system and provides the wearer with real-time information about the remaining air supply directly in front of their eyes, enhancing safety and awareness while operating in hazardous environments.

Mask-mounted pressure gauges improve accessibility and allow for quick checks without the need to remove the mask or divert attention from the task at hand. This immediate feedback is crucial during firefighting operations, where air supply management is vital for maintaining safety among firefighters. Such gauges typically feature a simplified visual display that shows the current pressure level, which is essential for making timely decisions about when to exit a hazardous area.

In contrast, other devices like the hand-held pressure gauge, digital readout, or data logger serve different functions or may not be designed for on-the-spot monitoring when an SCBA is worn. While hand-held pressure gauges can measure air pressure, they require the user to hold them, making it less practical during an emergency. Digital readouts and data loggers might provide more elaborate data analysis but aren't typically integrated into the SCBA system for immediate use by the firefighter in the thick of action.