The Edy II combines three different types of dive computer programs in one single instrument: 1- scuba diving (air or Nitrox) 2- technical diving (depth gauge and timer to a depth of 660'/200 meters) 3- free diving. Edy II is also an attractive, compact digital wristwatch. It has dual time zones, an alarm function and the display is back lit so can be read even in low light conditions.
1. The SCUBA DIVING COMPUTER mode allows you to choose between the uses of air or a nitrox mix with up to 50%oxygen, with the partial pressure of oxygen gas between 14.5 psi to 23 psi (1.0 to 1.6 bars). Depending on your diving skill level, physical health and age, you can program in a safety factor for either aggressive or conservative dives profiles. Three different safety levels can be set, a maximum depth alarm that can be inserted if and when required, graphic display of nitrogen saturation and central nervous system (CNS) oxygen toxicity, graphic indicator of ascent speed, thermometer and a wide range of audio and visual alarms. A high performance logbook memorizes a large amount of data from the last 30 hours of dives or of the last 60 dives, which can be scrolled through, one by one, at intervals of 30seconds, this integrated Dive Profile function does not require any accessory interface. A handy History function memorizes maximum depth, hours spent in the water and total number of dives performed.
2. In GAUGE mode Edy II is a valuable instrument for those who wish to program the dive using decompression software and perform dives in accordance with dive tables. The functions indicated provide the current and maximum depth, the dive time (including seconds), ascent speed, a temperature, a traditional watch and a handy chronometer (hours, minutes and seconds) to accurately calculate ascent and decompression stops. A depth alarm can also be enabled if and when required.The GAUGE mode also has its own logbook which calculates the average depth of the dive and records the temperature at the maximum depth reached, it also has aProfile function to review the dive at intervals of 30 seconds and an independent History function to record only those dives performed in GAUGE mode.
3. In FREE DIVE (FREE) mode all the needs of the free diver have been taken into consideration, current and maximum depth are provided as well as dive time (minutes and seconds), ascent speed and a depth and/or time alarm can be enabled. On the surface the interval between one dive and the next is indicated (minutes and seconds) along with temperature. This mode also has its own independent Logbook that is able to memorize up to 60 dives, filled with data, each of which can be reviewed with the integrated Profile function at intervals of just one second. The History section memorizes the total number of dives in the day, indicating the deepest dive and its duration. This daily memory can be reset at any time.
The 3 Volt CR2032 battery of the Edy II can be quickly replaced by any watchmaker. The battery has an approximate battery life of two years at 50 dives per year, An accessory interface is available to download all the data recorded and transfer it to a PC, thus allowing the user to access many more functions (not available for Windows Vista).
The Edy II uses the Buhlmann ZH-LB algorithm, redesigned by Randy Bohrer. It uses a 12 tissue model with tissue half-times from 5 to 640 minutes. The computer is calibrated for salt water, has a measuring range of 0' to 328' (0 to99.9 meters) in computer mode and 0' to 656' (0 to 199.9 meters) in gauge mode, and has a maximum surface time calculation of 48 hours. If altitude diving is a concern, the computer will properly adjust from 0' to 19,685'(0 to 6,000 meters). The computer can also be used in either imperial units (feet/degrees Fahrenheit) or metric units (meters/ degrees Celsius).