Dive Computer Cressi Leonardo BLACK/GREY KS770050 - AlatSelam.com
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Update Terakhir : 19-Oct-2019 15:36:48

Dive Computer Cressi Leonardo BLACK/GREY KS770050

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Harga Retail:
Rp.3,199,000 (Hemat Rp.2,787,000)
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The Cressi Leonardo Wrist Computer is an Elegant Expression of a Simple and Functional Design, the Leonardo is a Must-Have for Divers entering the sport and those who just want to dive. " A Single Button Interface makes it Effortless to Program Air, Nitrox and Gauge Modes. Leonardo has a Large Edge-to-Edge, High-Definition LCD Screen that gives Large Numerical Displays in a Computer that is still compact and Travel-Friendly. The Leonardo's Easy-to-See Battery Life Icon Indicator and its Distinct Audible Alarms Deliver Critical Information as well as Peace-of-Mind during the Dive. 

The Leonardo features a new Cressi RGBM Algorithm, created in conjunction with the expertise of Bruce Wienke and based on the Haldane model, integrated with RGBM factors. This Algorithm allows for Safe Decompression Calculations for Multiple Dives spread out over Multiple Days. The Leonardo computer by Cressi is a Multifunctional Instrument for Sport Diving. It will supply any wanted information on Depth, Dive Times, Decompression Status, Ascent Rate and Surface Interval Times between dives. Nitrogen Absorption and Release is Continuously Processed by its Sophisticated Software, taking into account the Quantity of Inert Gases in the different Mixtures which can be used. Such information is Displayed on the Instrument's Large Display, thanks to the PCD (Priority Compartment Digit Display) System, allowing an Easy and Direct Dialogue" between the Diver and the Computer, ensuring a clear understanding of all the Data needed at any given time and a perfect readability in any situation. The computer is provided with Clock and Calendar, a versatile Dive Memory (logbook), as well as a Dive Simulator. The Mathematical Model of Leonardo can make Saturation and De-Saturation Computations of dives carried out both with air and with Nitrox, whose parameters can all be set: from the maximum allowed PO2 value between 17.4 and 23.2 psi (1.2 bar and 1.6 bar), to the mixture's oxygen percentage (FO2) between 21% and 50% of O2. Additionally, the Instrument may be set by the user for either Imperial (feet) or Metric (meters) System. The Leonardo can also be fully re-set after each use, making it an excellent choice for rental departments. 

The Cressi Leonardo Dive Computer has an Operational Depth from 0' to 393' (0 to 120 meters), is Powered by a User Replaceable CR2430 3-Volt Battery, and is equipped with a 60 Dive (70 hour) Logbook Memory function. The Clock Function can be set in a 12/24 Hour Formats. The Computer is also Altitude Adjustable up to 12,139' (3,700 meters) and has a Back Light Feature for Low Light Conditions. The Computer comes with a Comprehensive Owner's Manual and is covered by a 24 month limited warranty. 
-Air, Nitrox and Gauge modes
-FO2 adjustable between 21% and 50%
-PO2 adjustable between 1.2 bar and 1.6 bar
-CNS oxygen toxicity graphic indicator
-Single button interface (short push changes function, longer push selects functions)
-Three levels of user-adjustable conservatism
-User-selectable Deep Stop function
-Modified Haldne and Wienke algorithm
-Tissues: 9 with saturation hemi-phases between 2.5 and 480 minutes
-Ascent rate alarm (10 m per minute)
-Log book for 60 dives/75 hours of information with 20-second sampling rate
-Battery life indicator
-Distinct, easy-to-hear audible alarms
-User changeable battery
-Adjustable unit of measure: English or Metric
-Backlit display
-Built-in calendar and clock.
-The instrument may be fully reset, in case of renting.
-PC/Mac interface with dive profile (optional)

This computer is designed for use by those who enjoy being under water for reasons other than using the kit.

THE MANUFACTURE OF DIVE COMPUTERS originally fell to a couple of companies. In Europe, units bearing different brands all came from the same factory in Switzerland. Then that Finnish upstart Suunto got in on the act, though it kept everything under its own label.
In the USA, a Bob Hollis company dominated the market, manufacturing for many different brands. Many companies that wanted something different went to Seiko in Japan. It made no computer under its own label but was happy to manufacture for others.
The diving business is very small. I was once told that the entire annual production of current brand-leader Suunto in units equalled only 10 minutes of Nokia phone production.
Similarly, Seiko makes a lot of products, and no longer seems interested in dive computers.
This left those companies that relied on Seiko supplies in the cold. One, Cressi, decided to source its own unique product within Italy. It’s called the Cressi Leonardo.

The Algorithm
Where do dive-computer manufacturers mostly go today for algorithms? One man has taken the limelight, and when he’s not busy at Los Alamos, Bruce Wienke likes to write decompression software for the leisure-diving industry.
So far, to my knowledge he has done this for Suunto, Mares and Atomic, and now he has written a nine-tissue version of his RGBM algorithm for Cressi.
Before any geeks write in to say that this is not a proper Reduced Gradient Bubble Model,
I would like to mention that when the great physicist was questioned about this, he answered that it would be possible to write a pure RGBM only if it was also possible to miss out the shallow part of the dive.
The algorithm takes into account silent micro bubbles that might form the nuclei of symptomatic bubbles during a second dive or series of dives.

The Instrument
The Leonardo’s LCD face measures 4.5cm across. It’s hidden behind a protective layer of transparent plastic. The manly strap is long enough to go round any wrist clad in a drysuit cuff, while being easy to replace if necessary.
The computer is set up using a single button, which is pressed in sequence to access the various menus. When adjusting any part such as the nitrox setting, one must be careful not to overshoot, as it is slightly irritating to have to work all the way round again.
When I first set it up, there was some frantic button-pressing, accompanied by one or two harsh words.

In the Water
At a time when diving Internet forums are full of recommendations to buy technical-diving computers on the grounds that “you’re going to need one, one day”, it was refreshing to get into the water undaunted by any lack of IT skills.
This computer is designed for use by those who enjoy being under water for reasons other than using the kit.
It proved straightforward to use, gave clear information, guided me as to when I was better off pausing for a minute or two at depth on the way up, gave a clear indication of remaining no-stop time or deco requirements, and beeped at me if I went up too quickly.
It indicated clearly the safety-stop time and, if I needed to see the screen more clearly in the dark, a button switched on the backlight.
Not only that but, unsurprisingly, the information it gave regarding decompression requirements during the dive was not dissimilar to that given to me by the Suunto (also using a Wienke RGBM) alongside it, including the option to enable deep stops and a variable safety setting. What more do you want?
You cannot program in your own gradient factors, or your own algorithm for that matter. Wienke, in his infinite wisdom, has done that for you. Buy it, set it, strap it on and go diving.

After the Dive
Finally, what a pleasure it was for someone who works in media to find that the computer interface and software for the Leonardo was equally at home on either a PC or a Mac.
Times are tough, and Cressi has brought this Wienke-type computer to the market at a fiercely competitive price. I imagine that we’ll be seeing a lot of them at dive sites before long.


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