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Related Manuals for Dive Rite NiTek 3
Summary of Contents for Dive Rite NiTek 3
- Page 1 NiTek3 Dive Computer NiTek3 Dive Computer User Guide Date of purchase: www.diverite.com...
- Page 3 Dive Rite’s website (www.diverite.com). He or she must then return the damaged items to Dive Rite, along with a copy of the original purchase invoice or receipt. No warranty service will be performed for other than registered owners.
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Page 4: Table Of Contents
Content Table of contents Chapter 1 Introduction • 1 Overview • 2 Features and functions • 3 Specifications • 5 Warnings • 6 Chapter 2 Using the NiTek3 • 9 Getting started • 10 Accessing display modes and screens • 11 Surface mode •... -
Page 5: Introduction
Chapter 1 Introduction Summary This chapter provides an overview of the NiTek3, lists the NiTek3’s features and functions, and covers warning information that should be read before using your NiTek3. Content Overview • 2 Features and functions • 3 Specifications • 5 Warnings •... -
Page 6: Overview
Introduction Overview Congratulations on your purchase of the NiTek3 dive computer. The NiTek3 is a sophisticated and comprehensive dive computer that was designed to offer you the latest in dive computer technology, safety, and reliability. The NiTek3 dive computer is a multifunctional computer for recreational diving, providing information on depth, dive times, no-decompression and decompression times, and nitrogen absorption and elimination during all dive phases, including... -
Page 7: Features And Functions
Introduction Features and functions The NiTek3 incorporates a number of important modes and features: • The NiTek3 turns on automatically upon descent • On the surface, the NiTek3 constantly displays a minimum of date and time • The NiTek3 uses easily accessible and highly reliable push buttons instead of exposed electrical contacts •... - Page 8 Introduction atmospheres depending on what is set, and when cumulative exposure to elevated PO2s exceeds recommended limits. • The NiTek3 can be programmed to display data in Imperial or metric units • Dive depth can be displayed in fresh or salt water equivalents •...
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Page 9: Specifications
Introduction Specifications Algorithm: Modified Buhlmann Sample tissues: 9 Tissue half-lives: from 5 to 640 minutes Size and weight Length: 4.25 in (10.8 cm) Height: 1.25 in (3.2 cm) Weight: 8 ounces (226 g) Display face Low battery indicator Two user buttons Water immersion switch Depth sensor Sea and fresh water calibration... -
Page 10: Warnings
Introduction Warnings This information has been developed for your safety. Please read and understand this manual completely before using your NiTek3 dive computer. Important safety information: • Before using your NiTek3, it is extremely important that you read the following points—as well as similar warning and caution notices that appear throughout this manual. -
Page 11: When Diving
Introduction dives in the same repetitive dive series and is thus, accurately monitoring the diver’s total exposure to oxygen and nitrogen. • Neither the NiTek3—nor any other dive computer— physically measures the amount of nitrogen present in body tissues or the rate at which nitrogen is being absorbed or released. - Page 12 Introduction • Do not rely solely on this or any other dive computer. Take a back-up dive computer or dive tables (along with a separate means of monitoring depth and dive time). • Be aware that the NiTek3 makes assumptions regarding residual nitrogen based on altitude settings.
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Page 13: Using The Nitek3
Chapter 2 Using the NiTek3 Summary This chapter provides topics about using, setting, and understanding each of the modes and options of the NiTek3. Content Getting started • 10 Accessing display modes and screens • 11 Button operation • 11 Surface mode •... -
Page 14: Getting Started
Using the NiTek3 Getting started The NiTek3 has many modes and screens and a number of options that can be changed depending on your dive location and profile. The following is a checklist of general things that you should pay attention to before, during, and after a dive. Before a dive •... -
Page 15: Accessing Display Modes And Screens
Using the NiTek3 Accessing display modes and screens There are some display modes that the NiTek3 enters and/or exits automatically. For example, by taking the NiTek3 underwater, the dive mode automatically turns on. Upon surfacing, the NiTek3 automatically enters the surface mode. To access other modes or screens requires the use of the NiTek3’s buttons. -
Page 16: Surface Mode
Using the NiTek3 Surface mode Surface mode is the NiTek3’s default mode. The computer returns to this mode automatically upon surfacing from a dive and from other modes when two to three minutes of inactivity have passed. Note: The NiTek3 may display additional information concerning exposure to nitrogen and oxygen, desaturation time, surface interval time, and altitude. -
Page 17: Setting The Computer For Metric Or Imperial
Using the NiTek3 To set the time and date: 1. Press and hold button A for ten seconds. The profile sampling rate flashes. 2. Press buttons A and B simultaneously for ten seconds. The “minutes” field flashes. 3. Press button B to set the minutes or press button A to go to another field, such as hours. -
Page 18: Setting The Dive Options
Using the NiTek3 Setting the dive options Setting the dive options includes setting up the following: • Dive profile sampling rate: This is how frequently depth data is measured and stored during a dive, which is 5, 10, 20, 30, or 60 seconds. •... -
Page 19: Setting For Fresh Or Salt Water Use
Using the NiTek3 The profile sampling rate flashes. 2. Press button B to change the sampling rate. 3. When finished, press button A twice to return to surface mode. Setting for fresh or salt water use The NiTek3 is capable of operating using fresh or salt water calculations. - Page 20 Using the NiTek3 2. Press button B to change mix1. Press and hold button B to increase the percentages rapidly 3. Press button A to select mix2. 4. Press button B to change mix2. Press and hold button B to increase the percentages rapidly 5.
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Page 21: Using Gauge Mode
Using the NiTek3 Using gauge mode If you do not want to use the NiTek3 as a normal “dive computer,” the NiTek3 has a gauge operation. Gauge operation is when the NiTek3 is operating simply as a depth gauge and bottom timer. -
Page 22: Understanding Default Mode
Using the NiTek3 Understanding default mode In your entry-level Enriched Air Nitrox training, you learned that among the greatest risks Nitrox (EANx) use poses is CNS oxygen toxicity. CNS oxygen toxicity can occur if Nitrox is breathed at depths where the partial pressure of oxygen (PO2) exceeds safe limits. - Page 23 Using the NiTek3 • If you set a Nitrox mixture, but do not dive with the computer, the NiTek3 holds the programmed gas mixture until midnight, then defaults. The computer does not default at midnight if you are diving. Dealing with FO2 default The best way to deal with FO2 default is to simply avoid it.
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Page 24: Plan Mode
Using the NiTek3 Plan mode Plan mode enables you to determine how long you can stay at various depths while remaining within the no-decompression limits. The no-decompression time limits are based on the gas mix that is selected. If you are making a dive within 24 hours of a previous dive, the no-decompression time limits are based on the residual nitrogen remaining. - Page 25 Using the NiTek3 NDL time may be displayed for some deeper depths. If this takes place, a series of horizontal lines are displayed. Similarly, for combinations of depth and FO2 that would cause a diver to exceed a limiting PO2 of 1.6 atmospheres, a series of horizontal lines appears in place of the no-decompression limit.
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Page 26: Dive Computer Mode
Using the NiTek3 Dive computer mode Dive computer mode is automatically entered when the computer enters the water. It begins performing its dive calculations once you descend below 5 feet (1.5 meters). Prior to diving, always check to ensure that the FO2 Caution: settings are correct and that the computer is not in default mode. -
Page 27: Changing Gas Mixes Underwater
Using the NiTek3 eight bars. When all bars are displayed, it means that you have used 100 percent of your “CNS” clock. This graph increases when you descend due to higher partial pressures and may decrease when you ascend. (5) Dive time: This is the time spent (in minutes) underwater, measured from the time you descended below 5 feet (1.5 meters). -
Page 28: Warnings While In Diving Mode
Using the NiTek3 Only the mix numbers that have been programmed Note: with a gas mixture are available. You cannot lock in a mix if it causes you to exceed a Note: PO2 of 1.6 atmospheres. Warnings while in dive mode While in diving mode, there are several warnings that you should be alert to. - Page 29 Using the NiTek3 Decompression warning with “DECO STOP” displayed on the screen (1) Deco stop symbol: The “DECO STOP” symbol displays indicating that you have to stop at the depth displayed. (2) Required stop depth: This is the required decompression stop depth.
- Page 30 Using the NiTek3 mix percentages, you can restart the dive. See “Understanding default mode” for more information. Ascent rate warning The NiTek3 assumes that you keep your ascent rate within the following limits: Depth range Ascent rate 0 to 19 feet (0 to 5.9 meters) 26 feet (8 meters) per minute 20 to 58 feet (6 to 17.9 meters) 39 feet (12 meters) per minute...
- Page 31 Using the NiTek3 the dive. As a result, the computer has entered the FO2 default. See “Understanding default mode” for more information. Oxygen limit index (OLI) warning The NiTek3’s oxygen limit index (OLI) reflects the cumulative effect of your exposure to elevated partial pressures of oxygen. The PO2 warning only accounts for the intensity of the exposure, but the OLI accounts for both the intensity and length.
- Page 32 Using the NiTek3 Out-of-range warning The following can cause the out-of-range warning: • Descend below the computer’s maximum operating depth of 328 feet (100 meters) • Exceed an actual bottom time of 599 minutes • Accrue decompression stops depths of greater than 90 feet (27 meters) The out-of-range warning consists of: •...
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Page 33: Gauge Mode
Using the NiTek3 Gauge mode When selected, gauge mode is automatically entered when the computer enters the water. It begins displaying depth and time once you descend below 5 feet (1.5 meters). To enter and set up gauge mode operation, see “Using Note: gauge mode.”... -
Page 34: Surface Mode (Upon Surfacing From A Dive)
Using the NiTek3 Surface mode (upon surfacing from a dive) Once you surface from a dive, the NiTek3 automatically switches to surface mode. In addition to the normal information displayed in surface mode such as time of day, there is other information that is displayed that pertains to the dive you just completed. - Page 35 Using the NiTek3 (3) O2 OLI bar graph: This indicates CNS toxicity level at the end of the dive. This drops as your surface interval time increases. (4) N2 exposure bar graph: This is the amount of residual nitrogen in your body at the end of the dive. This drops as your surface interval time increases.
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Page 36: Log Mode
Using the NiTek3 Log mode For each dive, the NiTek3 stores information, such as depth, time, temperature, etc. in a log. This stored log information can be viewed directly from the NiTek3’s screen when in log mode. A total of 10 dives can be stored. Because of the amount of information the NiTek3 stores, there are two pages that you can toggle between for each dive. - Page 37 Using the NiTek3 which began with log one. When the computer’s memory is full, the oldest dives are overwritten with the new dives. This causes the log entry number assigned to a particular dive to change. (2) Date: This the month and day of the dive. (3) Descent time: This is the time you started the dive, indicated by a down arrow.
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Page 38: Profile Mode
Using the NiTek3 Profile mode Profile mode enables you to see a record of the depths you reached at various points during a dive. You can display a detailed profile of each dive stored in the log. When a dive is selected, the computer automatically displays the depth and the time in the dive when you reached that depth until it reaches the end of the dive. - Page 39 Using the NiTek3 2. Press button B to select the dive that you want to view profile data. 3. Press button A. The arrow at the bottom of the screen points to “PROF.” Once a dive profile is selected, the computer Note: automatically progresses through the different depths and times of the dive.
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Page 40: Pc Transfer Mode
Using the NiTek3 PC transfer mode If you purchased the optional personal computer interface for the NiTek3, you can transfer the stored dive log information to your PC. Before transferring the dive log You must complete the following before transferring the dive log. - Page 41 Using the NiTek3 To enter PC transfer mode: 1. Press button A twice. The arrow at the bottom the screen points to “LOG.” 2. Press button A. The arrow at the bottom of the screen points to “PROF.” 3. Press and hold button B for five seconds. Arrows at the bottom of the screen point to “LOG”...
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Page 42: Altitude Operation
Using the NiTek3 Altitude operation The NiTek3 adjusts automatically for diving at altitudes of up to 19,685 feet (6,000 meters). To show that the NiTek3 has made the altitude adjustment, it displays the altitude setting using a symbol representing a mountain and a corresponding number. Altitude rank numbers Number Altitude range... - Page 43 Using the NiTek3 • Do not use the NiTek3 when the “ERR” symbol is displayed. This means that you are above an altitude of 19,680 feet (6,000 meters), which is beyond the NiTek3’s ability to function accurately. • Do not place the NiTek3 in dive mode when making sudden, substantial changes in altitude, such as when flying in an airplane.
- Page 44 Using the NiTek3 NiTek3 Dive Computer User Manual...
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Page 45: Care And Maintenance
Chapter 3 Care and maintenance Summary This chapter provides care and maintenance and battery information for the NiTek3. Content Proper handling techniques • 42 Low battery warning • 44 Replacing the battery • 44 NiTek3 Dive Computer User Manual... -
Page 46: Proper Handling Techniques
Dive Rite or its authorized dealers. Unauthorized disassembly will violate the warranty. • If the NiTek3 does not appear to be functioning properly, do not use it to dive. Return it to your authorized Dive Rite dealer for repair. NiTek3 Dive Computer User Manual... - Page 47 Care and maintenance • The NiTek3 should not come in contact with solvents or any type of chemical substances • Do not use compressed air to dry the NiTek3 • Do not use the NiTek3 in hyperbaric chambers if the device is not fully submerged in water •...
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Page 48: Low Battery Warning
Care and maintenance Low battery warning The battery that comes with the NiTek3 is designed to last for up to three years under normal use. You may get more or less use from the battery depending on how often it is used and how it is cared for. - Page 49 Care and maintenance To replace the battery: 1. Locate the battery compartment. It is the small section on the back of the computer that does not hold the wrist strap. 2. Remove the four screws holding the panel in place using the Phillips head screwdriver.
- Page 50 Care and maintenance NiTek3 Dive Computer User Manual...
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Page 51: Index
Index deco stop symbol · 25 decompression stop violation warning · 27 A (mode) button · 11 decompression warning · 24 accessing default mode · 18 modes and screens · 11 surface mode · 12 alarms · 3 default warning · 25 ·... - Page 52 Index fresh or salt water use · 15 log mode · 33 fresh water · 14 NDL · 20, 23 no-decompression limit · 20, 23 gas mix number log mode · 33 gas mixes · 15 OLI · 23, 31 changing underwater ·...
- Page 53 Index fresh or salt water use · setting time and date · 12 time of day · 12 metric or Imperial · 13 profile sampling rate · 14 time and date · 12 · 5 size and weight warnings · 6 specificatons ·...
- Page 54 Index NiTek3 Dive Computer User Manual...
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