Specifications

500AI

FO2 Set for a Nitrox Dive

You can set the 500AI for nitrogen-oxygen (nitrox) mixtures of 21% to 50%

oxygen (O2). If FO2 is set at a value of 21% (Fig. 34), the unit will remain set

as a '21% nitrox computer' for subsequent nitrox dives until FO2 is set to a

higher value, or until it automatically turns off and is reactivated.

Once a dive is made with the Pro Plus set as a nitrox computer (FO2 set for a

numerical value), it cannot be set for 'Air' until 24 hours after the last nitrox

dive. However, you can set FO2 for 21% for use with Air.

PLAN MODE

AERIS strongly recommends that you access the Plan Mode prior to

every dive to review the Planning Sequence (Fig. 35) that will help

you plan your dive as required to avoid exceeding no decompression,

or oxygen exposure, limits. This is especially important for repetitive

dives, when the Planning Sequence will indicate for you the 'adjusted' no de-

compression dive times that are available to you for your next dive, based on

any residual nitrogen or oxygen accumulation (whichever is in control) follow-

ing your last dive and surface interval.

Fig. 35 - Plan Mode

Fig. 34 - FO2 Set at 21%

MAX