The IQ-900 Zen is TUSA's latest full-featured wrist-top, watch style computer. The Zen is a stylish instrument that can be worn at the office, on the town or in the ocean - anytime, anywhere the Zen is your go to timepiece and dive instrument.
The IQ-900 can be operated as a watch, Air computer, Nitrox (EANx) computer, digital depth gauge/timer or as a free dive depth gauge/timer. The Zen's large alphanumeric and backlit display allows for high legibility in or out of the water, although its size is that of a normal style watch. In addition to offering the latest comprehensive computer features, the Zen adds a Deep Stop function for enhanced safety.
Deep Stop Function The Zen computer features an optional deep stop function for additional safety. The deep stop mode is activated when a dive exceeds 80 FT (24M) for more than 1 second. Upon ascent past 50 FT (15M), the computer will display a Deep Safety Stop screen and the recommended stop at 40 FT (12M) for a period of 2 minutes. This deep stop is highly recommended as additional opportunity to off-gas, but is not mandatory. If the diver chooses not to serve the stop it will not adversely affect the remaining No-Decompression Limits of the dive.
Automatic altitude adjustment from sea level to 14,000'
No fly icon, residual nitrogen discharge time display
PC download and upload settings/log data with TUSA Datalog Interface (Available 9/09)
User-replaceable battery with hot-swap (Battery: CR2430, 3V)
TUSA Z+ Algorithm based on Buhlmann ZHL-16c
Variable Ascent Rate Indicator
Rental unit reset option
Colours: Titanium Grey/Black, Black
Firmware Update Notice - IQ-900
In response to input received from owners and users of the IQ-900 Zen and IQ-950 Zen Air along with on-going testing and evaluation, TUSA has released new firmware updates for the above mentioned computers. The firmware corrects or modifies the following items to improve operation:
IQ-900 Zen
Corrected premature auto reset of FO2 from a Nitrox setting to an Air setting. This occurred without user action when Watch Mode was temporarily accessed after FO2 was set for Nitrox.
Changed the No Deco Safety Stop Depth from 4.5M to 5M (metric units). This was requested to be in agreement with local training guidelines.
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