Manual Seiko DH33 (page 8 of 15) (English)

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English

●This watch has a built-in pressure sensor to measure the

altitude (above sea level) and indicates the altitude rank

graphically in four levels.

●Residual nitrogen, no-decompression limits for the next dive

and other data are calculated taking into account the current

altitude.

●As you move across altitude ranks, the watch re-calculates

residual nitrogen on the spot.

Altitude rank indicator

Altitude

rank 0123

Measurement

error

(Flashing)

Indicator Nil

0 ~ 900

0 ~ 3000

600 ~ 1700

2000 ~ 5500

Altitude

above

sea level

1300 ~ 2500

4300 ~ 8200

2200 ~ 6000

7200 ~ 19700

6001 m and

higher

19700 ft and

higher

Notes:

1. The altitude range in the above table provides general guideline

of altitude only, and 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

surface. This is not a malfunction.

●The measurement units of depth and temperature can be

selected from “meters (m) and centigrade (° C)” and “feet (ft)

and Fahrenheit (° F)”.

HOW TO SET THE DEPTH & TEMPERATURE UNITS

Press to show DIVE PLAN display.

Press for 4 to 5 seconds to change over the depth

and temperature units.

* With each press of the button, the units of depth and

temperature change over alternately between “meters and

centigrade” and “feet and Fahrenheit”.

Depth unit

Note:

Once the units of depth and temperature are set in the DIVE PLAN

display, those in the DIVE LOG display and the DIVE mode will also

be set accordingly.

▼

Notes:

1. The display cannot be changed over to the DIVE PLAN for 10

minutes after a dive.

2. Please note that it may take some time to calculate no-

decompression limits.

3. 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. Surface time

Desaturation time

4. When planning a dive with nitrox:

Depending on the FO2 setting, “– –” appears in place of no-

decompression 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.

* 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.

WARNING

●Before using the dive plan function, be sure to check the gas mixture of your scuba tank, set FO2 accordingly and set

the unit of depth as required.

●Use this function for planning a dive before diving.

●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 FO

you have set, current altitude rank and residual nitrogen during surface interval.

Press to show DIVE PLAN display.

or Press to select the desired depth rank.

• “+” and “–”

appear near

buttons C and

D, respectively.

No-decompression limit FO2 you have set

Depth rank

• “9 m” / “30 ft”

is displayed

first.

▼

HOW TO USE THE DIVE PLAN FUNCTION

■ALTITUDE COMPENSATION ■

SELECTION OF MEASUREMENT UNITS

■DIVE PLAN FUNCTION

HOW TO USE DIVE COMPUTER FUNCTIONS HOW TO USE DIVE COMPUTER FUNCTIONS

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Seiko DH33 Manual

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