How frequently are gauges on dive systems required to be tested and calibrated?

The requirement for gauges on dive systems to be tested and calibrated every two years ensures that all equipment maintains accuracy and reliability, which is critical for diving safety. Regular calibration helps to detect any drift or inaccuracies that may occur over time due to various factors such as pressure changes, environmental conditions, or mechanical wear and tear.

By adhering to this two-year schedule, divers can trust that the information provided by their gauges—such as depth, pressure, and time—remains precise. This is vital for ensuring divers can make well-informed decisions throughout their dive and respond effectively to any emergencies.

In contrast, testing gauges before each dive—while critical for confirming that equipment is functioning at the moment of use—is not a substitute for the periodic calibration necessary to ensure ongoing accuracy. The same can be said for annual or five-year testing; these intervals do not align with the recommended standard for regular maintenance and calibration of diving gauges.