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English

3

WARNING

WARNING notes indicate any condition or practice
which, if not strictly observed, could result in severe
personal injury or possible death.

CAUTION

CAUTION notes indicate any condition or practice which,
if not strictly observed, could result in personal injury or
property damage.

decompression sickness and other hazards,
and are not intended to guarantee the safety
of the diver.  It is necessary to use other
diving equipment together with the watch
for safety’s sake.

A l s o   n o t e   t h a t   t h e   p o s s i b i l i t y   o f
decompression sickness and other hazards
may increase depending on such factors as
the individual diver’s physiological
characteristics, environmental conditions
and the extent of the diver’s fatigue.

Finally, the watch is intended for use by a
single user.  Do not share it with other
divers.  If any one other than the owner of
the watch uses it, make sure that the watch
is reset to the initial settings with the
measurements stored in it being all erased.

Summary of Contents for DH33

Page 1: ...e ce livret avant d utiliser cet appareil SEIKO Conservez cette brochure de mani re pouvoir la consulter au besoin Grazie per aver acquistato questo orologio computer per immersioni SEIKO Cal DH33 Per...

Page 2: ...he watch provides The watch also provides data for Nitrox diving Do not use the watch for Nitrox diving unless you are specially qualified to dive with Nitrox having full knowledge of the potential ha...

Page 3: ...the diver It is necessary to use other diving equipment together with the watch for safety s sake Also note that the possibility of decompression sickness and other hazards may increase depending on s...

Page 4: ...ving IN GENERAL BEFORE DIVING If the temperature of the watch is much higher than that of the water for example after having been left under direct sunlight before being put in water the watch may not...

Page 5: ...eeds the measurable range of the watch all the segments of the display flash In that case the watch cannot be used for diving for 48 hours after the dive is over AFTER DIVING CONTENTS Page WARNING 2 P...

Page 6: ...an algorithm developed by Mr Randy Bohrer one of the most distinguished scientist in this field which expands upon the theories of the so called Swiss model Altitude compensation The watch measures t...

Page 7: ...CORRECTION function Press button A Press button A Recalling log data Planning the next dive Press button A Press button A DIVE PLAN function DIVE LOG function Press button A Auto switch Water contact...

Page 8: ...TIME CALENDAR SETTING display all the segments of the display will light up This is not a malfunction Press button A B C or D to return to the TIME CALENDAR display and set the time calendar again Pr...

Page 9: ...untouched in the REGULAR ALARM SETTING display the display will automatically return to the TIME CALENDAR in 1 to 2 minutes 2 When the digits are adjusted in the REGULAR ALARM SETTING display the ala...

Page 10: ...w the REGULAR ALARM display to engage or disengage them as required following the procedure above D Press in the displays other than DIVE PLAN and DIVE LOG to turn on the illuminating light D The disp...

Page 11: ...d accordingly When you dive in a different time zone it is recommended that you use this function to set the time calendar of the diving site before diving With each press of buttons C or D 30 minutes...

Page 12: ...ng the risk of decompression sickness WARNING This function should be used only when you dive with a gas mixture of oxygen and nitrogen other than ordinary air When diving with air be sure to set the...

Page 13: ...the previous day and the date has changed to the next a flashing Nx is shown on the display In that case be sure to set FO2 newly before the next dive according to the gas mixture of your scuba tanks...

Page 14: ...d the altitude rank indication does not indicate a specific altitude 2 If the watch senses an altitude change across altitude ranks the residual nitrogen indicator may appear even while you are on the...

Page 15: ...th rank the watch calculates and displays a corresponding no decompression limit WARNING Before using the dive plan function be sure to check the gas mixture of your scuba tank set FO2 accordingly and...

Page 16: ...G on page 4 Also be sure to set FO2 according to the gas mixture of your scuba tank FO2 cannot be re adjusted while you are underwater Select the measurement units of depth and temperature as you requ...

Page 17: ...icates It is in violation of the decompression stop warning and the watch will not count down the decompression stop time and total ascent time even if you make a stop during ascent Even after the wat...

Page 18: ...ime and DECO all flash and the warning sound beeps for 3 seconds When you return to a depth deeper than the decompression stop depth the watch starts counting down the decompression stop time PO2 limi...

Page 19: ...asures the current depth of greater than 1 5 m 5 ft within 10 minutes after this display is shown the previous and the new dives are considered inseparable and the dive times of both dives and the sur...

Page 20: ...at end of dive Date of dive December 6 Dive No on that day Exit time 20 1 denotes the 1st dive log display for the 20th dive 20 2 denotes the 2nd dive log display for the 20th dive C D C or D Press to...

Page 21: ...ion warning It appears if you have exceeded no decompression limit but have not made a decompression stop as indicated by the watch It appears if the partial pressure of oxygen PO2 has exceeded 1 5 PO...

Page 22: ...ter than 1 5 m 5 ft a dive that lasts less than 3 minutes will not be recorded How to erase the log data in memory The entire log data stored in memory can be erased as required Press to show DIVE LOG...

Page 23: ...ncrements from 5 0 C up to 40 0 C 23 F up to 104 F The water temperature recorded in the dive log function is a measurement taken at the maximum depth Water temperature Surface interval time SURF T Th...

Page 24: ...gas mixture of the scuba tank which the diver needs to set for the watch before diving For diving with air Air 21 should be set FO2 can be set from 22 to 50 and if a value within this range is set th...

Page 25: ...to a depth shallower than the indicated depth a decompression stop violation warning is given Residual nitrogen at end of dive Residual oxygen at end of dive De compression stop depth The time period...

Page 26: ...ed at a SEIKO SERVICE CENTER For safety s sake the watch will also undergo a strict check on its water resistant quality and depth measurement function in addition to battery replacement Therefore it...

Page 27: ...bracelet wipe them periodically with a soft dry cloth PERIODIC CHECK 2 3 Years It is recommended that the watch be checked once every 2 to 3 years Have your watch checked by an AUTHORIZED SEIKO DEALE...

Page 28: ...residual nitrogen will be taken into consideration in calculations in the dive plan function The atmospheric pressure inside airplanes corresponds to altitude rank 2 and the watch has re calculated t...

Page 29: ...ery low temperatures the display light may dim and the change of digits may become slow 4 Display system TIME CALENDAR display Hour minutes seconds month date and day surface interval time and desatur...

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