The innovative Mares Quad Air Wrist Dive Computer is a step-up from the Quad, able to read the tank’s pressure, it receives data directly from the dive tank via a wireless transmitter. Also includes a magnificently clear display, with jumbo size information, three-row layout and four buttons for intuitive use! Three-row layout comprises all relevant data including tank pressure with optional transmitter. Two customizable fields for ancillary information. Mirrored button function during dive, option to view dive time including seconds and a runaway deco alarm. Computer has a multi-gas capability, decompression dive planner with user adjustable surface interval and a long battery life, that is user replaceable.
The functions of the Quad Air computer can be grouped into three categories, each corresponding to a specific mode of operation. Surface mode: Quad Air is dry on the surface. You can change settings, review your logbook, use the dive planner, see remaining desaturation after a dive, download to PC and much more. Dive mode: Quad Air monitors depth, time, tank pressure (optional), temperature and performs all decompression calculations; dive mode itself can be broken down into 4 sub categories: – pre-dive (Quad Air is on the surface but actively monitoring ambient pressure, so that it can begin to calculate a dive the instant it is submerged below 4’/2 meters); – dive – surfacing (Quad Air is on the surface at the end of a dive; dive time calculation is halted but if the diver submerges within three minutes the dive is resumed including the time spent on the surface); – post-dive (after the three minutes of surfacing mode, Quad Air closes the logbook and reverts to a display showing desaturation time, no-fly time and surface interval; this lasts until the desaturation and the no-fly time both have been reduced to zero). Sleep mode: the computer is on the surface after 1 minute without operation (3 minutes from pre-dive mode). Though the computer appears to be turned off completely, it is still active. Quad Air computes tissue desaturation and checks the ambient pressure once every 20 seconds for uninterrupted monitoring of the environment.
Quad Air, operating altitude with decompression sea level to approximately 12,100′ (3700 meters) – without decompression (gauge mode) at any altitude. Decompression model: RGBM Mares-Wienke (10 tissues). Depth measurement: – Max displayed depth: 492′ (150 meters) – Resolution: In feet is always 1′ (0.30 meter). From 0.1 meter until 99.9 meters and 1 meter at depth deeper than 100 meters. Resolution – Temperature compensation of the measurement between 14°F to 122°F (-10°C to +50°C) – Accuracy from 0 to 262′ (0 to 80 meters): 1% ± 1′ (0.2 meters) Temperature measurement: – Measurement range: 14 °F to 122°F (-10°C to +50°C) – Resolution: 1°F (1°C) – Accuracy: ± 4°F (± 2°C). Clock: quartz clock, time, date, dive time display up to 99 minutes. Oxygen concentration: adjustable between 21% and 99%, ppO2 max range between 17.4 psi and 23.2 psi (1.2 and 1.6 bar). Logbook memory: 35 hours of dive profile at 5-second sampling rate. Operating temperature: 14°F to 122°F (-10°C to +50°C). Storage temperature: -4°F to 158°F (-20°C to 70°C). Display: – Diagonal: 2.75″ (70 mm) mineral glass. Power supply CR2450 user-replaceable battery with a battery life of 100-150 dives. Actual battery duration depends on the usage of the backlight and the water temperature. Computer comes with a comprehensive owner’s manual. For download kit see SKU: MRSPCBL, Mares PC Interface for Blue Link.
The LED Tank Module is mounted onto an HP port of the 1’st-stage regulator, and its main function is to transmit tank pressure data via hose-less coded RF protocol to the dive computer. The dive computer then displays the tank pressure and calculates gas consumption rate and time remaining before reaching the reserve value. For this to happen, the tank module and the dive computer must be paired. The LED tank module features also, as the name suggests, an LED on the top of the tank module body. The LED can be used on the surface before a dive to distinguish between a full and an empty tank without needing a dive computer to display the exact value. During a dive the LED blinks when certain pressure levels have been reached and can thus alert your dive buddy or dive guide when you have reached the half tank mark or the tank reserve.
The tank module turns on automatically upon pressurization to at least 145 psi (10 bar). It turns off automatically when the pressure drops below 145 psi (10 bar). To save battery power, the tank module turns itself off also when the pressure does not change over more than 4 minutes. This prevents unnecessary battery consumption in case of a pressure check well ahead of a dive with the tank left open afterwards, or in case the tank is not closed, and the first stage purged immediately after a dive, or in the case of stage tanks that are left pressurized during the dive even when not in use. The tank module turns itself on again when a difference of pressure of more than 14.5 psi (1 bar) is sensed.
Upon pressurizing the tank module, if a pressure of 2600 psi (180 bar) or more is sensed, the LED will blink 10 times in Green color in 4-second intervals. The value of 2600 psi (180 bar) can be set by the user via Android app*.
For battery preservation, the LED turns off after the surface check and stays off until a pressure of 1450 psi (100 bar) is reached (half tank warning). At that point it blinks in Yellow color once every 4 seconds. Once the tank pressure reaches 725 psi (50 bar) the LED blinks in RED color once every second (tank reserve). The values of 1450 psi (100 bar) and 725 psi (50 bar) can be set by the user via Android app*. The LED can also be activated to blink permanently with Green color for night dives. This is set by the user via Android app*. The Android app* allows the user to perform also the following: – Read the device ID – Read the firmware version – Read the battery voltage – Perform firmware upgrades. Transmitter is powered by a CR123A user-replaceable battery – Battery life: 150-200 dives. Transmitter come’s with an owner’s manual.
Air Integrated computerized monitoring of tank pressure is used to determine a bottom time which depends not only on your depth, but also on your actual gas consumption, increasing your dive safety. In addition, the gas consumption (referred to the surface) is displayed on the computer for more control over your dive. The computer does this via the HP Transmitter attached to your first stage regulator by sampling the pressure drop over time and giving you the rate of consumption in minutes remaining. If the time remaining is greater than the no-decompression limit for your depth it will display the shorter time allowed.