What is the primary function of a tank pressure gauge in a Diver Life Support System (DLSS)?

The primary function of a tank pressure gauge in a Diver Life Support System (DLSS) is to monitor the remaining gas supply during a dive. This gauge provides crucial information regarding the pressure of the gas (often air or a specialized mixture) stored in the dive tank. By displaying this pressure, divers can estimate how much breathing gas they have left, which is essential for planning their descent and ascent, managing dive time, and ensuring safety throughout the dive.

Maintaining awareness of the remaining gas supply is critical to avoid situations such as running out of air while underwater, which can lead to diving emergencies. Therefore, having a reliable and accurate tank pressure gauge is a vital component of a diver’s life support equipment. The other options relate to different aspects of diving, such as depth or temperature monitoring, but none pertain directly to the primary function of a tank pressure gauge, which is solely focused on the assessment of the gas supply.