Catalogue

Like its predecessor, Sherwood Amphos Air is designed with 4 buttons user's interface. They are big enough and comfortable to press even in thick gloves.

Display is similar to Amphos dive computer and divided into 3 sections: top, middle, bottom. Viewable area is large to show all necessary data by displaying big and sharp digits. Only additions that can be found - all related to air integration: wireless link symbol, tank in use air pressure, and applicable alarms.

Dive computer has two bar graphs to display nitrogen loading/oxygen toxicity on the left side of the display and ascent rate is on the right:

1. Nitrogen loading bar Graph (NiBG) – shows NO-DECO/DECO status: when you go deeper and dive time increases, segments will be added to NiBG, and when you ascend and swim in shallow waters – amount of segments decreases therefore giving you more time to stay underwater; NiBG consists of 3 zones: NO-DECO/Caution/DECO;
   O2 bar graph is displayed only when dive computer set for Nitrox;
2. Ascent Indicator Bar Graph (ASC) – represents diver's ascent rate at certain depths

Before diving, we will program certain dive mode and all related to it desirable parameters. Dive computer has 4 Set Groups:

1. Set F Group (FO2):
• FO2 Mix 1 - Air, 21-50%;
• FO2 Mix 2 - Air, 21-100%;
• FO2 Default - ON/OFF;
• PO2 alarm - 1.0-1.6 ATA
  
2. Set A Group (ALARMS):
• alarms - ON/OFF;
• Ascent alarm - ON/OFF;
• Depth alarm - ON/OFF/9-99 meters;
• NiBG alarm - ON/OFF;
• Dive Time Remaining (DTR) alarm - ON/OFF/5-20 min;
• Elapsed Dive Time (EDT) alarm - ON/OFF/10-180 min;
• Turn Pressure alarm (TMT #1 only) - 1000-3000 PSI;
• End Pressure alarm (TMT in use) - 300-1500 PSI
  
3. Set U Group (UTILITIES):
• wet activation - ON/OFF;
• units;
• Deep Stop - ON/OFF;
• Safety Stop - ON/OFF;
• Conservative Factor - ON/OFF;
• backlight - OFF/5-10 sec;
• sample rate - 2/15/30/60 sec;
• TMT setup
  
4. Set Time Group (Date/Time):
• main and alternate time;
• daily alarm;
• hour & hour format;
• month & year;
• day;
• CDT;
• Chronograph

Sherwood Amphos Air dive computer has Dive Planner that works for ranges 9-57 meters. If I plan repetitive dives - planner will calculate available NO-DECO time according to my nitrogen intake, oxygen toxicity from previous dives, and surface interval.

As you may see - new Sherwood dive computer inherited all the features from Amphos user interface and menu sets. But there still are few differences:

• During set up procedure - when you set A Groups (alarms), diver should adjust TURN alarm (TMT #1 only) in the range of 1000-3000 PSI, and END alarm (TMT in use) in the range of 300-1500 PSI;
• In U Group (utilities) there are two extra parameters - setting TMT #1 and TMT #2. Diver needs to enter 6-digits special code in order for dive computer to recognize wireless transmitters;
• PO2 alarm set up was moved to F Group (in Amphos it was at A Group)
  

As a dive computer, Sherwood Amphos Air operates in 3 modes.

Operation in those modes are identical to previous model - Amphos, so I won't be describing them again. Just check out review of Sherwood Amphos and you will have full understanding how it works:

1. Normal mode – when you set it for Air or Nitrox with FO2 up to 100%;
2. GAUGE mode – in this mode it functions as a depth gauge and timer only and doesn’t perform calculations for nitrogen absorption and oxygen accumulation, but works as an air-integrated computer;
3. FREEdive mode – this mode is for diving without scuba gear with the set of specific freediving alarms
   

The main difference between two models - air integration. And this new function is expressed by extra alarms, TMTs setting, additional screen with status of wireless link and tank in use air pressure (ALT #3), and extra data about pressure on Log screen.

Copy this Sherwood Amphos Air NO-DECO Displays Card for your Reference and Share with your friends and buddies!

Also if you set Amphos Air to GAUGE mode - dive computer operates as an air integrated instrument and shows Air Time Remaining (ATR) and tank in use air pressure in PSI or bar, and doesn't perform nitrogen and oxygen calculations, of course.

Those mentioned above are the main additions to Amphos Air. And the rest of functions are pretty the same as Sherwood Amphos dive computer. I won't be describing all dive modes again - they are described in detail in Sherwood Amphos review.

After the Transition Period diver will have access to the following information:

• FLY mode - Time to Fly Countdown Timer;
• DESAT mode (NORM only) - Time to Desaturate Countdown Timer;
• PLAN mode – this function allowed the planning next dive-sessions and seeing for how long diver could stay underwater safely and at what depth, according to his/her current nitrogen accumulation and oxygen toxicity from previous dives;
• Logbook mode – it consists of 3 pages of dive data and stores info of your 24 most recent dives (battery removal does not make any affect on Logbook memory);
• History mode – consists of 2 pages and accumulates information, like number of dives, number of dive hours, and max depth achieved from all previous dives with Air, Nitrox, or in GAUGE mode (battery removal does not make any affect on History memory); freedives are not recorded in the viewable mode, but we may use software to download freedive history to our PC;
• PC interface – this function allows you to upload settings and download data from Sherwood Amphos Air to PC or Mac by using special cable and software

Sherwood Amphos Air: What Divers say

Diving with Sherwood Amphos Air scuba computer is very similar to Amphos, except new function - air integration and support for up to 2 wireless transmitters. Amphos Air has user-friendly interface and user manuals structured very well. Even if someone bought this instrument as his/her first computer - no problem with setting and diving with it.

Display layout is a bit different from previous model with extra data related to air pressure, wireless link and pressure alarms. But it is easy to read with sharp digits and strong backlight for 5 or 10 seconds.

I like its stable wireless signal - we didn't notice many interruptions, just very rarely and with immediate restoration. And switching gases procedure was pretty easy.

Sherwood Amphos Air	Dive-Computer-Wizard Rating

Sherwood Amphos Air dive computer gave me a very strong impression of multifunctional and at the same time user-friendly dive computer. It is perfect for recreational divers who uses more than one gas mix, and beginners in scubadiving as well.

This instrument has very competitive price as a complete system (1 wireless TMT and PC cable) at this moment, so I think if you need solid recreational dive computer with wireless air integration - look no further! Sherwood Amphos Air may be your best dive buddy!