Somerset Divers Forum

[Medders]

I have a MARES Tutor dive computor for sale. This is an entry level unit which has all the basic features for around £150 new, £45 ono to you. I have had it since new and have not used it for a while as it doesn't cover Nitrox.

The Tutor has a clear display with all information being available in dive mode on the screen. It does have pushbuttons rather than metal contacts to select the various modes of operation. It is powered by a standard AAA battery which can be easily changed by the user.

The Tutor can be switched on by pushing the mode button or automatically by entering the water. In manual switch on mode the Tutor does a self check autozero procedure (automatic calibration) and checks battery level. In the water the Tutor switches on automatically, If the unit is not taken to 1.5m within three minutes it switches into wait state. Beyond 1.5m it automatically enters dive status and records depth, time and average temperature.

The clear display shows current depth, dive time, remaining no-decompression time and temperature. Rate of ascent indicator is also shown as a percentage of current depth (shown by bars at 60, 90, 100, 120%.

After the dive the Tutor shows 'No Fly' time which is reset to 12 hours with no decompression diving or 24 hours with decompression or repetitive dives. Surface interval is also shown together with any UBA asterisk symbols that give a warning of any specific errors hence the name 'Tutor'. These are a little basic and can be triggered by arm movements especially at shallower depths. The theory is good however, if your diving attracts no symbols this means good dive profiles, while getting more symbols should show any particular problem areas and help you learn to dive more conservatively.

Setting is very straightforward using the mode switch, date and time, three levels of altitude setup, units for temperature and depth are also variable. It is also possible to override the automatic STOP setting after uncontrollable ascent by setup menu, this could be useful during training exercises etc. to avoid the computer locking up.

The last 20 dives are held in memory together with profiles for the last 10 dives.

I have a manual to go with it and will try to answer any questions you may have. If you are seriously interested and want to try before you buy i'm ok with that.

Ian