User manual SEIKO DH33

[. . . ] DH33 INSTRUCTIONS BEDIENUNGSANLEITUNG INSTRUCTIONS ISTRUZIONI (P. 2) INSTRUCCIONES INSTRUÇÕES ! (P. 86) You are now the proud owner of a SEIKO Diving Computer Cal. For best results, please read the instructions in this booklet carefully before using your SEIKO Diving Computer. Please keep this manual handy for ready reference. [. . . ] No-decompression limits corresponding to each of the 14 ranks of depth of water are displayed. Depth rank : In meters : 9 m, 12 m, 15 m, 18 m, 21 m, 24 m, 27 m, 30 m, 33 m, 36 m, 39 m, 42 m, 45 m and 48 m. In feet : 30 ft, 40 ft, 50 ft, 60 ft, 70 ft, 80 ft, 90 ft, 100 ft, 110 ft, 120 ft, 130 ft, 140 ft, 150 ft and 160 ft. No-decompression limits are calculated according to FO2 you have set, current altitude rank and residual nitrogen during surface interval. HOW TO USE THE DIVE PLAN FUNCTION A Press to show DIVE PLAN display. No-decompression limit FO2 you have set * With each press of buttons C and D, the depth rank advances and moves back by one rank, respectively. It changes quickly by keeping the respective buttons pressed. * As you select a depth rank, the watch calculates and displays a corresponding no-decompression limit. The display cannot be changed over to the DIVE PLAN for 10 minutes after a dive. Please note that it may take some time to calculate nodecompression limits. During surface interval: While the watch counts down the desaturation time during surface interval, surface time and desaturation time are also shown in the DIVE PLAN display. When planning a dive with nitrox: Depending on the FO2 setting, "­ ­" appears in place of nodecompression limit for a depth rank. It indicates that the selected depth rank exceeds the maximum depth to which you can descend with the gas mixture you have set. Depth rank · "9 m" / "30 ft" is displayed first. A C or D Press to select the desired depth rank. C · "+" and "­" appear near buttons C and D, respectively. D 15 English HOW TO USE DIVE COMPUTER FUNCTIONS DIVE FUNCTION The auto switch (water contact sensor) senses water and automatically activates the DIVE FUNCTION, showing the DIVE display. There is no need to change the displays manually. As you descend to 1. 5 m (5 ft) underwater, the watch starts showing the current depth and measuring the diving time. During a dive, the watch automatically measures depth, water temperature and dive time, and provides the information necessary for diving including warnings on hazards. WARNING Before making a dive, be sure to check the function of your watch, following the instructions set forth in "BEFORE DIVING" in "PRECAUTIONS FOR DIVING" 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 require. They cannot be selected while you are underwater. DISPLAY WHILE DIVING During no-decompression diving Residual nitrogen indicator No-decompression limit Dive time Oxygen limit indicator FO2 you have set C Current depth Current time D Maximum depth Water temperature Partial pressure of oxygen (PO2) D 16 Press to illuminate the display for 2 to 3 seconds. * The illuminating light will not stay lit if the button is kept pressed. C Press and hold to display current time, partial pressure of oxygen (PO2) and data. * The display is illuminated for 2 to 3 seconds. HOW TO USE DIVE COMPUTER FUNCTIONS English After no-decompression limit reaches "0" (during decompression diving): WARNING Do not make a decompression stop at a depth shallower than the decompression stop depth the watch indicates. 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 watch has given a decompression stop violation warning, it will resume calculation of nodecompression diving if you return to the indicated decompression stop depth and make a decompression stop as indicated by the watch. If you continue ascending and surface, defying the warning, the watch cannot be used for diving for 48 hours. During that time period, the watch is not set to calculate decompression diving, and only the surface interval and dive log displays are shown. If the aquatic environment permits, it is recommended that you make a decompression stop at a depth 1 to 2 m (3 to 7 ft) deeper than the indicated decompression stop depth. In that case, take care that you should stay at the depth for a longer time period than the decompression stop time that the watch indicates. Never dive beyond the no-decompression limit. Residual nitrogen indicator Dive time Current depth Decompression stop depth Decompression stop time Total ascent time Decompression diving mark When the no-decompression limit reaches "0" while diving, all the residual nitrogen indicators are displayed to indicate that the watch has shifted to decompression diving mode. After you make decompression stops as indicated by the watch, it will resume calculation of no-decompression diving. Total ascent time refers to the minimum time required to stay underwater before surfacing, including the decompression stop time at the indicated decompression stop depths. 17 English HOW TO USE DIVE COMPUTER FUNCTIONS WARNINGS DURING A DIVE Indication Warning Description Ascent rate warning If you ascend in water at a rate greater than the specified one, flashing "SLOW" appears for 5 seconds and the warning sound beeps for 3 seconds. [. . . ] The atmospheric pressure inside airplanes corresponds to altitude rank "2", and the watch has re-calculated the altitude. Water remains on the auto switch, or the auto switch was turned on during flight and the airplane landed. A dive beyond the specified limit was made within the past 48 hours. The battery life indicator is lighting up or flashing. [. . . ]