Bedienungsanleitung Sherwood Wisdom 3 (Seite 9 von 54) (Englisch)

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Wisdom 3 DC Manual

PSI

FEET

TIME

DIVE

FEET

MAXIMUM

NITROX

SAFE

MINUTES

CNS

DECO

CNS

DECO

BAR GRAPHS

Nitrogen Bar Graph

The Nitrogen Bar Graph (Fig. 3a) represents tissue loading of nitrogen, showing your relative no decompres-

sion or decompression status.

As your depth and bottom time increase, segments will add to the Graph, and as you ascend to shallower

depths, the Bar Graph will begin to recede, indicating that additional no decompression time is allowed for

multilevel diving.

The Nitrogen Bar Graph monitors 12 different nitrogen compartments simultaneously and displays the one

that is in control of your dive. It is divided into a No Decompression (normal) zone, a Caution zone (also No

Decompression), and a Decompression (danger) zone.

While you cannot provide a guarantee against the occurrence of decompression sickness, you may choose

your own personal zone of caution based upon age, physique, excessive weight, etc., to reduce the statistical

risk.

Oxygen Accumulation Bar Graph (O2BG)

The O2 Bar Graph (Fig. 4a) represents oxygen loading, your relative oxygen tolerance dosage (OTU), show-

ing the maximum of either per dive accumulated oxygen, or 24 hour period accumulated oxygen.

As your accumulation (% saturation) increases during a dive or 24 hour period, segments will add to the Bar

Graph, and as loading decreases, it will begin to recede, indicating that additional exposure is allowed.

NOTE: Displays associated with oxygen and the O2 Bar Graph will only appear if

FO2 has been set at a value other than 'Air' (e.g., a numerical value).

Variable Ascent Rate Indicator (ARI)

The Variable Ascent Rate Indicator (Fig. 4b) provides a visual representation of Ascent speed (i.e., an ascent

speedometer), 'normal' rate, a 'cautionary' rate, and 'Too Fast'.

The segments of the Variable Ascent Rate Indicator represent 2 sets of speeds which change at a reference

depth of 60 FT (18 M). Refer to the chart at the right for segment values.

WARNING: At depths greater than 60 FT (18 M), Ascent Rates should not exceed 60

FPM (18 MPM). At depths of 60 FT (18 M) and shallower, Ascent Rates should not

exceed 30 FPM (9 MPM).

INFORMATIONAL DISPLAYS

Each numeric and graphic display represents a unique piece of information. It is imperative that you

understand the formats, ranges, and values of the information represented to avoid any possible misun-

derstanding that could result in error.

Tank Pressure Display

Tank pressure is displayed numerically as the largest digits (Fig. 5a). Values of pressure are displayed from 0

PSI (BAR) up to 5000 PSI (352 BAR) in increments of 5 PSI (.5 BAR).

Depth Displays

During a dive, the Current Depth display (Fig. 5b), indicates depths from 0 to 330 FT (99.9 M) in 1 FT (0.1

M) increments.

The Maximum Depth reached during that dive will also be displayed (Fig. 5c).

• When the unit is set to operate as a Digital Depth Gauge/Timer (referred to as Gauge Mode), the Depth

Display range is 'extended' to 399 FT (120 M).

• At depths greater than 99.9 M, it will indicate metric values in increments of 1 M.

Fig. 3 - Nitrogen BG

Fig. 4 - O2BG & ARI

Variable Ascent Rate Indicator

Deeper than 60 FT (18 M)

Segments Ascent Rate =

Displayed FPM MPM

0 0-20 0 - 6

1 21-30 6.5-9

2 31-40 9.5-12

3 41-50 12.5-15

4 51-60 15.5-18

5 >60 >18

60 FT (18 M) & Shallower

Segments Ascent Rate =

Displayed FPM MPM

0 0-10 0 - 3

1 11-15 3.5-4.5

2 16-20 5-6

3 21-25 6.5-7.5

4 26-30 8-9

5 >30 >9

Fig. 5 - Pressure & Depth

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