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SCOTT Contour User Manual

SCOTT Contour
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CONTOUR
1
1. INTRODUCTION
1.1 ABBREVIATIONS
The following abbreviations are used in
this manual:
AL Airline Attachment
BA Breathing Apparatus
CVR Cylinder Valve Retainer
DCC Decontamination Attachment
DV Demand Valve
HP High Pressure
IRIS Integrated Radio Information
System
m Metres
min Minutes
mg Milligrams
mm Millimetres
MP Medium Pressure
NRV Non Return Valve
PRV Pressure Relief Valve
psi Pounds per Square Inch
RSM Rescue Mask Attachment
1.2 BREATHABLE AIR
Air used to supply or charge breathing air
may be natural or synthetic and must
comply with EN 12021 : 1999 or
AS/NZS1715 : 1994. The composition of
breathable air in accordance with EN
12021 is given in Table 1.
Component Mass %
(Dry Air)
Volume%
(Dry Air)
Oxygen 23.14 20.948
Nitrogen 75.52 78.08
Argon 1.29 0.93
Carbon Dioxide 0.05 0.031 4
Hydrogen 0.000 003 0.000 05
Neon 0.001 270 0.001 818
Helium 0.000 037 0.000 524
Krypton 0.000 330 0.000 114
Xenon 0.000 039 0.000 009
Table 1: Breathable Air - EN 12021
(NOT applicable for Australia or
New Zealand)
There is an increased fire risk when the
oxygen content is above the value shown
above.
The purity/quality of air used to supply
and charge breathing apparatus should
be tested periodically in accordance with
national regulations.
Unless otherwise specified, the
contaminants shall not exceed the
permissible exposure level.
National regulations must be observed.
The mineral oil content shall be such that
the air is without the odour of oil. The
odour threshold is in the region of 0.3
mg/m
3
.
The water content shall not exceed 50
mg/m
3
for 200 and 207 bar apparatus and
30 mg/m
3
for 300 bar apparatus.
For airline apparatus, air must be used
with a dew-point sufficiently low to
prevent internal freezing.
1.3 COMPRESSED AIR
AIRLINE SUPPLIES
Air for use with compressed air airlines
must conform to EN 12021 : 1999 or
AS/NZS1715 : 1994 and must have a
dew point sufficiently low to prevent
internal freezing when apparatus is used
in temperatures below 4°C.
No. of Wearers Airflow (L/min.)
1
2
3
4
300
450
750
900
Table 2
Airline pressure must be between 5.0 and
9.0 bar (70 and 130 psi). Airflow supply
capacity for a single airline is given in
Table 2.
Generally; each additional wearer
requires an extra 150 litres per minute,
each additional pair of wearers requires
300 L/min for one wearer and 450 L/min
for two wearers. All measurements must
be taken at the wearer end of the airline.
Example: for 8 users (4 pairs) the
recommended flow is 4 x (300 + 150) =
1800 litres/minute.

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SCOTT Contour Specifications

General IconGeneral
BrandSCOTT
ModelContour
CategoryDiving Instrument
LanguageEnglish

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