Bedienungsanleitung UWATEC Galileo Terra (Seite 51 von 62) (Englisch)

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3. Diving with Galileo

English

- class 1: from approximately

1000m/3300ft to approximately

2000m/6600ft (switch point at

815mbar);

- class 2: from approximately

2000m/6600ft to approximately

3000m/10000ft (switch point at

725mbar);

- class 3: from approximately

3000m/10000ft to approximately

4000m/13300ft (switch point at

610mbar);

- class 4: above approximately

4000m/13300ft. In this altitude class

Galileo functions in gauge mode only

(automatic switch from computer

mode).

The altitude classes are deﬁ ned in terms of

approximate elevations because the effect

of weather conditions can make the switch

point pressure occur at different levels.

4000 m

13120ft

2000 m

6560ft

1000 m

3280ft

3000 m

9840ft

0 m

No deco data

gauge mode

Switch point at 610 mbar / 8,85 psi

Switch point at 725 mbar / 10,51 psi

Switch point at 815 mbar / 11,82 psi

Switch point at 905 mbar / 13,82 psi

Galileo deals with altitude automatically: it

monitors the atmospheric pressure every

60 seconds, even when it is turned off, and

if it detects a sufﬁ cient drop in pressure, it

does the following:

- it switches on (if it was off);

- it indicates the new altitude range by

means of black segments inside the

stylized mountain and, if applicable, the

prohibited altitude range;

- it indicates the desaturation time, which

in this case is an adaptation time to

the new ambient pressure. If a dive

is started during this adaptation time,

Galileo considers it a repetitive dive,

since the body has residual nitrogen.

3.6.1 Prohibited altitude

Going to altitude, as much as ﬂ ying after

diving, exposes your body to a reduced

ambient pressure. In a way similar to the

no-ﬂ y time, Galileo advises you which

altitude classes are safe to reach after a

dive and which aren’t. If you have to drive

over a mountain pass to return home after

a dive, it can be quite important to have this

information.

The prohibited altitude classes are

displayed by grey segments inside the

stylized mountain. This can be combined

with black segments indicating current

altitude. In the example above, the diver is

presently at altitude class 2 and should not

reach altitudes of class 4.

Galileo has an altitude alarm: if you were to

reach an altitude that according to Galileo

is incompatible with your current residual

nitrogen levels, it will warn you with an

altitude alarm (see section 1.4 for more

information).

3.6.2 Decompression dives

in mountain lakes

In order to assure optimal decompression

even at higher altitudes, the 3m/10ft

decompression stage is divided into a

4m/13ft stage and a 2m/7ft stage in altitude

ranges 1, 2 and 3.

If atmospheric pressure is below 610mbar

(altitude higher than 4000m/13300ft), no

decompression calculation is carried out

by Galileo (automatic gauge mode). In

addition, the dive planner is not available in

this altitude class.

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