Manual
5958
Requirements for Compressed Air
Oxygen
The content of oxigen must be within the
range of (21 +/- 1) Vol. % (dry air).
Impurities
1. General information
Compressed air for respiratory equipment
must not contain impurities in a
concentration which might have toxic or
harmful effects. In any case there must be
as little impurities as possible and they must
be far below the national limit of exposition.
Combined effects of more than one impurity
must be considered. If there are no natio-
nal restricting requirements the values of 2
to 3 must be applied.
Note: The limit concentration for every
impurity should be deducted from the na-
tional limit of exposition. The influences of
pressure and exposition time should be
considered as much as possible.
2. Lubricants
The content of lubricants (drops or mist)
must not exceed 0.5 mg/m
3
. In case of
synthetic lubricants 1) is to be applied.
3. Smell and taste
The air must be without significant smell or
taste.
4. Content of carbon dioxide
The content of carbon dioxide must not
exceed 500 ml/m
3
(500 ppm).
5. Content of carbon monoxide
The content of carbon monoxide must not
exceed 15 ml/m
3
(15 ppm).
Content of waterContent of water
Content of waterContent of water
Content of water
1. There must be no liquid water.
2. The air for compressed air respirators
must have a dew point which is low enough
to avoid condensing and freezing. If the
equipment is used and stored under a
known temperature the dew point under
pressure must be at least 5°C below the
assummably lowest temperature. If the
conditions for use and storage of the
compressed air reservoir are not known, the
dew point under pressure must not exceed
-11°C
3. The maximum content of water in the air
at atmospheric pressure must be in line with
the values of the chart.
Note: The contents of water of the air which
is delivered from the compressor to fill 200
bar or 300 bar compressed air containers
should not exceed 25 mg/m
3
.
Nominal Max. contents of water in the
pressure air at atmospheric pressure
bar mg/m
3
40 - 200 50
> 200 35
Chart 1
Labelling of the Compressed Air
Cylinder:
Text / Marking:
ANSCHÜTZ-HENRICH-UN 1002/200
200 bar Luft/ Air 2900 PSI
Netto 0,050 Kg - TARA 0,418 Kg - 0,197 L
PD 300 bar - D - 09/00 F 04.00 Al
001343
READ INSTRUCTIONS BEFORE USE
Description:
•ANSCHÜTZ-HENRICH:
Name of manufacturer.
•UN 1002:
International sign for compressed air.
•200 bar Luft/Air 2900 PSI:
Max. allowed filling pressure at 15 °C.
•Netto 0,050 Kg:
Net filling weight.
•TARA 0,418 Kg:
Empty compressed air cylinder.
•0,197 L:
Capacity of the compressed air cylinder.
•PD 300 bar - D 09/00:
Test pressure - country of manufacture -
date of test.
• F 04.00 Al:
Intern manufacturing number.
•001343:
Manufacturer’s identification code.
•Read INSTRUCTIONS BEFORE USE:
General note.
Chart 2Chart 2
Chart 2Chart 2
Chart 2
Components Mass-% Volume-%
(dry air) (dry air)
Oxygen (O
2
) 23, 14 20, 9476
Nitrogen (N
2
) 75, 5 78, 084
Argon (Ar) 1, 288 0, 934
Carbon dioxide (CO
2
)0,048 0,0314
Hydrogen (H
2
) 0, 000003 0, 00005
Neon (NE) 0, 00127 0, 001818
Helium (HE) 0, 000073 0, 000524
Krypton (Kr) 0, 00033 0, 000114
Xenon (Xe) 0, 000039 0, 0000087
Appendix
ChecksChecks
ChecksChecks
Checks
Any suitable method is allowed as far as it
corresponds to the following general
requirements:
•
to measure and judge the results the
accuracy of the method must be
considered and
•
the proof limit of the applied method must
be below the required limit.
Typical composition of natural airTypical composition of natural air
Typical composition of natural airTypical composition of natural air
Typical composition of natural air
(ISO 2533)(ISO 2533)
(ISO 2533)(ISO 2533)
(ISO 2533)