Seiko DH33 - Manual (Page 10)

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DISPLAY AFTER A DIVE
Current depth
When you are less than 1.5 m (5 ft) underwater and
the auto switch senses water:
● The watch shows the dive display with the current depth being
“0.0 m (0 ft)”.
● If the watch shows the dive display after you surface, check
that water does not remain on the auto switch.
● If the watch measures 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 surface interval time are
added together.
Indication Description Warning
Ascent rate warning
(flashing)
WARNINGS DURING A DIVE
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.
Three rates are specified depending on the depth level.
0.0 ~ 5.9 m (0 ~ 19 ft) : 8 m (26 ft)/min
6.0 ~ 17.9 m (20 ~ 59 ft) : 12 m (39 ft)/min
18.0 m (60 ft) and deeper : 16 m (52 ft)/min
* The watch calculates the ascent rate by measuring the current depth every 6 seconds.
Decompression
warning
Decompression stop
violation warning
(flashing)
If you accidentally exceed the no-decompression limit, the watch is shifted to the
decompression mode, flashing “DECO” is shown, and the warning sound beeps
for 3 seconds.
If you ascend to a depth shallower than the decompression stop depth that the
watch indicates, it gives a decompression stop violation warning. The current
depth, decompression stop depth, decompression stop time 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.
PO 2 limit warning
(Warning on partial
pressure of oxygen)
(flashing)
If the partial pressure of oxygen (PO 2 ) reaches 1.5, the warning sound beeps for
3 seconds. By pressing and holding button C to show PO 2 , you can see some of
the oxygen limit indicators flashing.
If PO 2 exceeds 1.6, the “O 2 ” mark starts flashing, and the warning sound beeps
for 3 seconds. By pressing and holding button C to show PO 2 , you can see all the
oxygen limit indicators flashing.
OLI warning
(Warning on oxygen
limit) It appears when all the oxygen limit indicators are flashing.
(flashing)
Out of range warning It appears when the measurement exceeds the specified value as follows:
• Maximum depth exceeds 99.9 m (328 ft).
• Dive time exceeds 599 minutes.
• Decompression stop depth exceeds 15 m (50 ft).
• Decompression stop time exceeds 99 minutes.
(flashing)
* The watch will not measure the current depth while the warning sound is beeping.
When you are less than 1.5m underwater or on the
surface and the auto switch does not sense water:
• TIME/CALENDAR display
Desaturation
time Surface interval
time
Press and hold to show the surface interval time
and desaturation time.
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HOW TO USE DIVE COMPUTER FUNCTIONS HOW TO USE DIVE COMPUTER FUNCTIONS