Sherwood Scuba AMPHOS AIR 2.0 Manual

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AMPHOS AIR 2.0 DC MANUAL

AMPHOS AIR 2.0

DIVE COMPUTER MANUAL

Doc. No. 12-79 3 9 -r01 (11/12/19 )

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Summary of Contents for Sherwood Scuba AMPHOS AIR 2.0

Page 2: Table Of Contents
POWER SUPPLY ................7 NORM DIVE MODES ................23 TRANSMITTER SIGNAL RECEPTION GUIDE ......24 WATCH FEATURES & DISPLAYS ............8 POSITIONING OF THE AMPHOS AIR 2.0 ........24 LOCAL DEFAULT TIME ..............9 Link Interruption Underwater ...........24 MAIN TIME ..................9 DIVE TIME REMAINING (DTR) ............25 WATCH ALT ..................9...
Page 3 WARNINGS AND SAFETY RECOMMENDATIONS • It should not be considered that the capabilities built into the AMPHOS AIR 2.0 provide an implied approval or consent from Sherwood for individuals to exceed the defined limits for recreational diving, as agreed on by all internationally recognized training agencies.
Page 4: Notices, Warranty, Model
Should your AMPHOS AIR 2.0 prove to be defective for any reason (other than those listed in the limitations section below) it will be repaired or replaced (at Sherwood Scuba's discretion) free of charge excluding shipping and handling charges.
Page 5: Features & Displays
AMPHOS AIR 2.0 DC MANUAL FEATURES & DISPLAYS © Pelagic, 2019 Doc. No. 12-79 3 9 -r01 (11/12/19 )
Page 6: Control Buttons
• Lower/Left - Advance (A) button OPERATING MODE STRUCTURE Unless it is operating in Dive Computer mode, the AMPHOS AIR 2.0 will be On in the default Watch Main Time (home time) mode (Fig. 1), like a standard watch, until the mode is changed.
Page 7: Backlight
• TRT Low Battery conditions are only displayed on Status screens that can be accessed from the Surface Main. To check the condition of the AMPHOS AIR 2.0 or a TRT's Battery if NORM or GAUG Mode is selected, depress the S button for 2 seconds while viewing the Surface Main, then release it.
Page 8: Watch Features & Displays
AMPHOS AIR 2.0 DC MANUAL WATCH FEATURES & DISPLAYS © Pelagic, 2019 Doc. No. 12-79 3 9 -r01 (11/12/19 )
Page 9: Local Default Time
> Day of the Week is set automatically when the Date is set. > When the AMPHOS AIR 2.0 is operating in Dive Computer mode, Date is displayed only to identify dives when they are accessed in the Log Mode •...
Page 10: Set Time
AMPHOS AIR 2.0 DC MANUAL Set Time The Set Time screen displays the graphics SEt and TIME with the Time of Day (hr:min) with the Hour digits ﬂashing (Fig. 13). The graphic P is displayed when PM, no graphic if AM or 24 Hour Format.
Page 11: Set Cdt
AMPHOS AIR 2.0 DC MANUAL Set CDT, information includes (Fig. 18): > Graphic SEt with last Time (hr:min) set, Hour digits ﬂashing. > Graphic CDT. • S (press/hold) will scroll upward through the Hour Set Points in 1 hour increments at a rate of 8 per second.
Page 12: Dive Computer Features & Displays
AMPHOS AIR 2.0 DC MANUAL DIVE COMPUTER FEATURES & DISPLAYS © Pelagic, 2019 Doc. No. 12-79 3 9 -r01 (11/12/19 )
Page 13: Bar Graphs
ALPHA / NUMERIC DISPLAYS Tank Pressure When the AMPHOS AIR 2.0's Receiver is set ON and is active, Tank Pressure from the active Transmitter that is properly linked will be dis- played on the NORM or GAUG Main screens (Fig. 24a).
Page 14: Dive Computer Surface Modes
AMPHOS AIR 2.0 DC MANUAL DIVE COMPUTER SURFACE MODES © Pelagic, 2019 Doc. No. 12-79 3 9 -r01 (11/12/19 )
Page 15: Operating Modes
The AMPHOS AIR 2.0 will enter post dive Surface Mode upon ascent to 2 FT (0.6 M) for 1 second. The Surface Interval Time colon will ﬂash during the ﬁrst 10 minutes after a NORM or GAUG dive, or 1 minute after a FREE dive.
Page 16: Battery Status
MODs affected by the PO2 limit set will not be displayed when FO2 for Gas 1 is set to AIR. Internally, the AMPHOS AIR 2.0 keeps track of the O2 so that if FO2 for Gas 1 is subsequently set for a numerical value, the O2 accumulated during previous AIR dives will be accounted for in the next Nitrox dive (during that dive period and series of repetitive dives).
Page 17: Set Gas 2 Fo2, Po2 Alarm
• 2 minutes, or M (2 sec), revert to Main. * The AMPHOS AIR 2.0 is programmed to prevent FO2 for Gas 2 from being set at a value lower than the FO2 set for Gas 1. When set- ting FO2 for Gas 2, the lowest value available will be the Set Point of Gas 1.
Page 18: Set Edt Alarm
AMPHOS AIR 2.0 DC MANUAL SET EDT ALARM, information includes (Fig. 43): > Graphic ON (or OFF), ﬂashing. > Elapsed Dive Time (hr:min). > Graphic EDT. • S ( < 2 sec) will step through the selections OFF, ON, and SEt.
Page 19: Set U Group (Utilities)
AMPHOS AIR 2.0 DC MANUAL SET U GROUP (UTILITIES) Selections >> Wet Activation > Units > Deep Stop > Safety Stop > Conservative Factor > Backlight Duration > Sampling Rate > TRT 1 > TRT 2. > A + S (2 sec), while viewing Set A, will access Set U (Fig. 48).
Page 20: Set Sampling Rate
• M (2 sec), or if no button is pressed within 2 minutes, operation will revert to the Surface Main. Fig. 57 - SERIAL NUMBER The Serial Number and Firmware Revision will be requested in the event that you contact Sherwood regarding the AMPHOS AIR 2.0. Enter (view only) them in the Records section provided in the back of this Manual.
Page 21: Fly Mode
AMPHOS AIR 2.0 DC MANUAL PLAN DEPTH/TIME, information includes (Fig. 59): > Max Depth allowed for the PO2 Alarm value set with MAX and FT (or M) icons, blank if FO2 is set for Air. > Plan Depth with FT (or M) icon.
Page 22: History Mode
AMPHOS AIR 2.0 DC MANUAL LOG PREVIEW, information includes (Fig. 62): > Graphic LOG. > Dive number (1 to 24) for that period with DIVE icon. > Date (month.day or day.month) the dive was conducted. > Graphic NO-D, DECO, GAUG, or VIOL describing the type of dive.
Page 24: Transmitter Signal Reception Guide
4 seconds after the AMPHOS AIR 2.0 is moved back into its correct position. An interruption of the TRT Link may also occur while the AMPHOS AIR 2.0 is in an area within 3 to 4 feet (1 meter) of a running Dive Propul- sion Vehicle.
Page 25: Dive Time Remaining (Dtr)
ATR (Fig. 70a) can be viewed when an Alternate display that can be accessed during dive modes. The AMPHOS AIR 2.0 calculates ATR using a patented algorithm that is based on a diver's individual air consumption rate and current depth.
Page 26: Norm No Decompression Dive Mode
5 FT (1.5 M) for 5 seconds. When the Wet Activation feature is set OFF, the AMPHOS AIR 2.0 will not enter Dive Mode upon descent unless it is operating in one of the NORM Dive Computer modes (menus) at that time. Modes such as Surface Mode, Plan, Fly, etc.
Page 27: Deco Safety Stop
RESPONSIBLE COMPUTER DIVING • Plan each dive, and dive your plan. The AMPHOS AIR 2.0 was not designed to make decisions for you, only to provide you with the information you need to make responsible decisions for yourself. This begins with a dive Plan that will help you avoid a low air or decompression situation.
Page 29: Decompression
AMPHOS AIR 2.0 DC MANUAL DECOMPRESSION Decompression mode activates when theoretical No Decompression time and depth limits (NDLs) are exceeded. Upon Entry into Deco, the Audible will sound until acknowledged or timeout of 10 seconds. While it is sounding, the UP Arrow icon and graphic DECO (in place of Pressure) will ﬂash to alert you.
Page 30: Delayed Violation 1 (Dv1)
AMPHOS AIR 2.0 DC MANUAL Upon entry into the following Violation modes, the Alarm will sound, even if set Off. When these events occur, the Alarm cannot be acknowledged (silenced) by pressing S. DELAYED VIOLATION 1 (DV1) If you surface during the 5 minute CV or remain above a required Deco Stop Depth for more than 5 minutes, the audible will sound during which the full NIBG will ﬂash.
Page 31: Violation Gauge Mode (Vgm)
• S (< 2 sec) to acknowledge/silence other alarms. • L (press) to activate Backlight. The AMPHOS AIR 2.0 will also enter VGM 5 minutes surfacing from a dive in which a Delayed Violation (1, 2, or 3), or 100% O2 condition occurred.
Page 32: High O2
AMPHOS AIR 2.0 DC MANUAL HIGH O2 Warning at 80% (240 OTU). Alarm at 100% (300 OTU). O2 Warning If the theoretical amount of oxygen accumulated reaches 80% of the limit for a single exposure or 24 hour period, the Audible will sound dur- ing which the Up Arrow icon and graphics O2 - 80 will ﬂash in place of EDT time (or if in Deco Stop Depth/Time) (Fig.
Page 33: Switching Gas Mixes & Transmitters
AMPHOS AIR 2.0 DC MANUAL SWITCHING GAS MIXES & TRANSMITTERS © Pelagic, 2019 Doc. No. 12-79 3 9 -r01 (11/12/19 )
Page 34: Switching (Norm)
SWITCHING (NORM) During NORM Dives, the AMPHOS AIR 2.0 can be manually switched from Gas 1 to Gas 2, changing FO2 displays and calculations, and if TRTs (Transmitters) are used, changing Pressure related displays and calculations from TRT 1 to TRT 2.
Page 35: Gauge Operating Mode
NOTE: Once a dive is made in Digital Gauge Mode, you must wait 24 contiguous hours after surfacing before the AMPHOS AIR 2.0 resets and will operate as an Air or Nitrox dive computer in NORM Mode or FREE Dive Mode.
Page 36: Surf Main
• L (press) will activate the Backlight. • S (2 sec) will activate the AMPHOS AIR 2.0's Receiver and access a series of screens that will indicate the Status of the system's Batteries and Pressures of the Tanks in use.
Page 37: Trt 1 (2) Switch Preview
AMPHOS AIR 2.0 DC MANUAL TRT 1 SWITCH PREVIEW*, information includes (Fig. 102) - > Link icon. > Graphic trt 1. > TRT (tank) 1 icon. > NX icon if Nitrox. > Pressure with PSI (or BAR) icon. • M (< 2 sec) to access the TRT 2 Switch Preview.
Page 38: Free Dive Operating Mode
AMPHOS AIR 2.0 DC MANUAL FREE DIVE OPERATING MODE FREE Mode uses the NORM/GAUG settings for >> Time/ Date, Wet Activation, Units, Conservative Factor, and Back- light Duration. © Pelagic, 2019 Doc. No. 12-79 3 9 -r01 (11/12/19 )
Page 39: Surf Main
AMPHOS AIR 2.0 DC MANUAL FREE DIVE MODE When Free Dive Mode is selected, nitrogen loading is calculated based on a default FO2 of Air. The amount of nitrogen remaining during 24 hours is carried over between FREE and NORM operating modes.
Page 40: Free Elapsed Dive Time (Edt) Alarm
AMPHOS AIR 2.0 DC MANUAL FREE ELAPSED DIVE TIME (EDT) ALARM The Free EDT Alarm is factory set for 30 seconds. When set On, the audible will sound 3 short beeps and the graphic EDT and Time digits will ﬂash every 30 seconds.
Page 41: Free Dive Alarms
AMPHOS AIR 2.0 DC MANUAL FREE DIVE ALT 2, information includes (Fig. 1 14) - > Max Depth with MAX and FT (or M) icons. > Time of Day (hr:min). • A (< 2 sec) to revert to the Main, or after 5 seconds if A is not pressed.
Page 42 NDC Time are carried over from one operating mode to the other, which permits the user to maintain awareness of nitrogen absorption and off gasing status. The mathematical model currently used in the AMPHOS AIR 2.0 is based on no decompression/decompression multilevel repetitive dive schedules. This algorithm does not take into account the physiological changes associated with the high pressures that competitive type Free diving can expose a diver to.
Page 44: Care And Cleaning
Instrument Lens Protector. Small scratches will naturally disappear underwater. • Soak and rinse the AMPHOS AIR 2.0 in fresh water at the end of each day of diving, and check to ensure that the areas around the Low Pressure (Depth) Sensor (Fig.
Page 45 • Verify all Set Points prior to diving. • If any portions of the display are missing or appear dim, or if a Low Battery condition is indicated, return your AMPHOS AIR 2.0 to an Authorized Sherwood Dealer for a complete evaluation before attempting to use it.
Page 46: Altitude Sensing And Adjustment
The AMPHOS AIR 2.0 will not function as a Dive Computer above 14,000 feet (4,270 meters). UPLOADING SETTINGS AND DOWNLOADING DATA The AMPHOS AIR 2.0 is conﬁgured with a Data Port that enables it to be connected to a PC or Mac USB port using a special Interface Cable available as a separate option.
Page 47: Norm/Gaug Alarm Screens
AMPHOS AIR 2.0 DC MANUAL NORM/GAUG DIVE MODE ALARM SCREENS ASCENT TOO FAST DEPTH ALARM ELAPSED DIVE TIME ALARM NITROGEN BAR TURN PRESSURE END PRESSURE GRAPH ALARM ALARM (TRT1 only) ALARM (TRT in use) DIVE TIME REMAINING DIVE TIME REMAINING...
Page 48: Specifications
AMPHOS AIR 2.0 DC MANUAL SPECIFICATIONS CAN BE USED AS • Watch • Air Computer • Nitrox Computer • Digital Depth Gauge/Timer • Free Dive Depth Gauge/Timer NO DECOMPRESSION MODEL Basis: • Modified Haldanean Algorithm • 12 tissue compartments Data Base: •...
Page 49 AMPHOS AIR 2.0 DC MANUAL SPECIFICATIONS (CONTINUED) • Set U Group (Utilities): • Wet Activation (Off/On) • Units of Measure (Imperial/Metric) • No Deco Deep Stop (Off/On) • No Deco Safety Stop (Off/On) • Conservative Factor (Off/On) • Backlight Duration (Off, 5, 10 sec) •...
Page 50 AMPHOS AIR 2.0 DC MANUAL SPECIFICATIONS (CONTINUED) OPERATIONAL PERFORMANCE Function: Accuracy: • Depth ±1% of full scale • Timers 1 second per day Dive Counter: • NORM/GAUG displays Dives #1 to 24. • FREE displays #1 to 99 (0 if no dive made yet).
Page 51 AMPHOS AIR 2.0 DC MANUAL NO DECOMPRESSION LIMITS AT ALTITUDE (IMPERIAL) Altitude> 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 1 1000 12000 13000 Depth 4:20 4:20 3:35 3:21 3:07 2:55 2:45 2:36 2:28 2:21 2:15 2:10 2:04...
Page 52: Inspection/Service Record
If you dive in situations where your trip would be ruined or your safety would be jeopardized by losing the use of your AMPHOS AIR 2.0, a backup instrument system is highly recommended.

Sherwood Scuba AMPHOS AIR 2.0 Manual

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