Which term estimates when the minimum cylinder pressure will be reached?

The term that estimates when the minimum cylinder pressure will be reached is the concept referred to as "Time-to-reserve." This term specifically relates to the calculation that determines how long a diver can continue their activities before reaching a pressure that indicates they should be running low on air. It takes into account the current depth, the rate at which gas is consumed, and the remaining gas in the cylinder.

Understanding "Time-to-reserve" is crucial for diving safety, as it helps divers manage their air supply effectively and ensures that they do not dive too deeply or for too long without assessing their remaining gas. Divers are trained to regularly check their cylinder pressure and calculate how much time they have left based on current consumption rates, making "Time-to-reserve" an essential tool in planning safe dives.

Other terms, while related to gas management, don't specifically refer to the estimation of when minimum cylinder pressure will be reached in the same direct manner. "Pressure-to-surface" focuses on the actual pressure required to safely ascend rather than estimating remaining time based on current pressure, while "Duration-to-depletion" may imply how long a cylinder will last under certain conditions but does not focus on the minimum threshold. "Gas-consumption-rate" describes how quickly gas is