NiTek He Owners Manual NiTek® is a registered trademark of Lamartek, Inc., dba Dive rite Read this manual, in its entirety, before using your NiTek He. Failure to follow the instructions it gives, or to heed the warnings it provides, can lead to serious personal injury or death. 175 NW Washington Street • Lake City, FL 32055 • USA • Phone (386) 752-1087 Fax (386) 755-0613 • www.diverite.com • E-mail: support@diverite.
NiTek He Owner’s Manual Page 2 NiTek1/NiTek He Limited Warranty Rite will—at its sole discretion—repair or replace NiTek system components proved to be damaged by faulty manufacture or material, at no cost, for a period of up to one year (365 days) from the date of purchase. Dive This warranty applies only to the original retail purchaser. It does not cover commercial or rental use, nor does it extend to units purchased from other than an authorized Dive Rite dealer.
NiTek He Owner’s Manual Page 3 Table of Contents Introduction.................................................................................4 Common Sense Warnings..................................................................................................... 4 Using the NiTek...........................................................................6 Surface Mode..........................................................................................................................
NiTek He Owner’s Manual Page 4 Introduction This information has been developed for your safety. Please read and understand this manual completely before using your NiTek He dive computer. This manual contains important safety and maintenance information. Read this manual thoroughly and become familiar with all of your scuba equipment before diving. Important information regarding the use or maintenance of your dive computer is designated, throughout this manual, by the important symbol appearing above.
NiTek He Owner’s Manual Page 5 Before using your NiTek He, it is extremely important you read the following points—as well as similar warning and caution notices that appear throughout this manual—and follow the recommendations they provide. Failure to do so could result in damage to or loss of equipment, serious personal injury or death.
NiTek He Owner’s Manual Page 6 sity, dehydration, cold or exertion, which experts believe place divers at greater risk of DCI. If these, or similar factors apply to you, use the NiTek He—and other dive computers or dive tables—with even greater caution. Experts still know surprisingly little regarding the exact nature and causes of decompression illness (also known as decompression sickness, DCI or DCS). Susceptibility to DCI may vary substantially from person to person and from day to day.
NiTek He Owner’s Manual Page 7 Figure 1 Surface Mode. The top display is how the computer appears when it calculates that there is still residual inert gas remaining in the user’s body following a dive. The bottom display is how the computer appears when at least 48 hours have passed following a dive.
NiTek He Owner’s Manual Page 8 be treated as single (non-repetitive) dives. Please note that this is not the same as “Time to Fly.” Experts recommend waiting at least 24 hours following any dive before flying in an aircraft or driving to altitude. Failure to allow sufficient surface interval before doing so may substantially increase the risk of Decompression Illness (DCI). If less than 48 hours have passed since the last dive, the NiTek He displays Surface Interval Time (SURF T.) in HOURS:MINUTES.
NiTek He Owner’s Manual Page 9 Figure 2 Altitude symbols.
NiTek He Owner’s Manual Page 10 touch its external electrical contacts and fool the NiTek He into thinking it is under water. This interferes with your NiTek He’s ability to function accurately. Do not pack or store your NiTek He with wet dive equipment, or touch it with wet fingers while moving to altitude. Doing so may cause it to erroneously enter Dive Mode and interfere with its ability to accurately process and display data.
NiTek He Owner’s Manual Page 11 Once the Low Battery warning appears, you should return your NiTek He to your local authorized Dive Rite distributor for battery replacement. Date/Time Set Mode Pressing and holding button B, while in Surface Mode, will cause the NiTek He to display the current date and time, along with the year and seconds settings. Holding button B for from four to five seconds will enable you to change the date and time. Figure 4 Date/Time Set mode.
NiTek He Owner’s Manual Page 12 Figure 5 Dive Set mode. Items appearing include: 1) Mode indicator; 2) PO2 alarm value; 3) mix number; 4) FO2/FHe levels; 5) Max depth alarm value; 6) Max time alarm value; 7) Max depth alarm on/off; (OLI); 8) Max time alarm on/off; 9) sampling rate. Be aware that, while in Gauge mode, you cannot enter settings for mixes 1-7 until at least 48 hours have passed since surfacing from your last dive.
NiTek He Owner’s Manual Page 13 When setting parameters for mix 1, you will also have the option of setting values for maximum depth and time warnings, and of turning the depth and time alarms on and off. If less than 48 hours have passed since surfacing from a dive in Gauge mode, you can set values for maximum depth and time warnings while in mix “G.” Holding button B will cause displayed number values to advance rapidly.
NiTek He Owner’s Manual Page 14 Plan Mode Plan Mode enables you to answer the question, “If I enter the water right now, how long can I stay at various depths while remaining within the NiTek He’s No-Decompression Limits?” It is designed to help plan single-mix, no-decompression dives. Figure 6 Plan Mode. Items displayed include: 1) Plan depth; 2) No-Decompression Limit (NDL); 3) mode indicator; 4) Mix 1 gas settings.
NiTek He Owner’s Manual Page 15 Figure 7 Log mode. Items appearing include: 1) Date; 2) Bottom time; 3) Descent time; 4) Ascent time; 5) OLI at end of dive; 6) Mix number and corresponding gas settings; 7) PGT at end of dive; 8) Average and max depths for dive; 9) Coldest temperature during dive. Pressing button A to change the displayed mix number will show you the gas settings for the chosen mix.
NiTek He Owner’s Manual Page 16 The NiTek He can display the coldest temperature reached during the dive in a range from 23°F/5°C to 104°F/40°C. If the coldest temperature reached during the dive is outside this range, the computer will display the temperature as being either Lo or Hi. Profile Mode Entering Profile mode enables you to access detailed depth information from the dives stored in memory.
NiTek He Owner’s Manual Page 17 Begin by plugging one end of the cable supplied with the interface in an open “com” port on your computer, and plugging the other end into the interface itself. If you have not already done so, install NiTekLogic™ onto your computer’s hard drive. Load the program, go to Options and check the Uploader tab. Verify the com port selection matches the com port into which you plugged the transfer cable. Set the computer into Upload mode, as outlined below.
NiTek He Owner’s Manual Page 18 Figure 10 Dive mode. The no-decompression dive appears at the top; the decompression dive display is at the bottom. Items displayed include: 1) Current depth; 2) Current bottom time; 3) Maximum depth; 4) Remaining NDL; 5) Current OLI; 6) Current PO2; 7) Current PGT; 8) Total ascent time, including stops; 9) First or current stop depth and stop time. Pressing button A enables you to switch mixes, as shown on the accompanying flow chart.
NiTek He Owner’s Manual Page 19 The NiTek He enters Dive mode as soon as it enters the water. It does not count a dive as having taken place, however, unless you remain below a depth of 5.0 feet/ 1.5 meters for at least three minutes. If you spend at least ten minutes above a depth of 5.0 feet/1.5 meters, the computer will consider any further descent as a separate dive. If your NiTek He is in default, an audible warning will sound as you enter the water.
NiTek He Owner’s Manual Page 20 Figure 12 Out of Range warning. To activate the Out-of-Range Warning, you would have to do one or more of the following: Descend below 394 feet/120 meters while in dive computer mode, or 656 feet/ 200 meters while in Gauge mode. Exceed a bottom time of 699 minutes.
NiTek He Owner’s Manual Page 21 Depth Range Ascent Rate 0 ft/0m to 19 ft/5.9m 20 ft/6.0m to 58 ft/17.9m 59 ft/18.0m or deeper 26 ft/8m per Minute 39 ft/12m per Minute 52 ft/16m per Minute Figure 13 Ascent Rate Warning. If you exceed these ascent rates, the NiTek He’s audible alarm will sound, and the computer will display its Ascent Rate Warning, as shown in Figure 13. This consists of current depth indicator blinking on and off.
NiTek He Owner’s Manual Page 22 Figure 14 Deco Stop violation. If you find yourself in Deco Stop Violation, descend to or below the indicated stop depth and remain for the time shown. You should also be aware that, during a Deco Stop Violation, the NiTek He’s Ascent Rate Warning does not function. However, in so far as the correct response to a Deco Stop Violation involves not only slowing your ascent, but reversing it, the problem is self-correcting.
NiTek He Owner’s Manual Page 23 PO2 The PO2 warning will occur at the value you set for it while in Dive Set mode. Figure 16 PO2 warning. If you set the PO2 warning for 1.4 atmospheres, an alarm will sound and the current depth and PO2 information will blink on and off. If you set the PO2 warning for 1.6 atmospheres, the OLI graph will blink as well.
NiTek He Owner’s Manual Page 24 When seven of the OLI’s eight pixels appear, the NiTek He’s audible alarm will sound. When eight pixels appear, the alarm will sound and the OLI display will blink on and off. If you do not ascend to a shallower depth, and all eight of the OLI’s eight pixels appear, the alarm will again sound and the display will again blink. This portion of the display will continue to blink until the OLI drops to seven pixels.
NiTek He Owner’s Manual Page 25 Be aware that weather-related changes in air-pressure can cause incorrect display of altitude settings. Be sure to check indicated altitude settings against actual altitude before use. Your NiTek He is not to be disassembled by anyone other than Dive Rite or its authorized dealers. Unauthorized disassembly will violate the warranty. If the NiTek He does not appear to be functioning properly—in any manner—do not use it to dive.
NiTek He Owner’s Manual Page 26 The lens face may be damaged (and its water resistance impaired) if exposed to: solvents such as alcohol or gasoline; cosmetic products such as hair spray or liquid soaps; alkaline substances; aromatic hydrocarbon solvents; and, halogenated hydrocarbon solvents. Store the NiTek He in a cool, dry location. After diving, wipe the computer dry and store it in a location separate from other damp items.
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