Factair F4500, Operating Manual

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Water (H
2
O) (67 28531)
REQUIREMENTS - FOR AIRLINES BELOW 40 BAR THE PRESSURE DEWPOINT TO BE 5°C BELOW
THE LIKELY LOWEST TEMPERATURE. WHERE THE LIKELY LOWEST
TEMPERATURE IS NOT KNOWN THE PRESSURE DEWPOINT SHOULD NOT
EXCEED -11°C.
- FOR HIGH-PRESSURE CYLINDERS THE FOLLOWING UPPER LIMITS APPLY: - 40
TO 200 BAR = 50MG/M³, ABOVE 200BAR = 35MG/M³
- FOR HIGH-PRESSURE CYLINDER CHARGING COMPRESSORS THE UPPER LIMIT
= 25MG/M³
A reddish brown discoloration will show the extent of the water content, which is read from the scale
printed on the tube in mg/m³.
When using the 50-2000 range setting, the tube reading is multiplied by a factor of 10, i.e. a tube
reading of 150mg/m³ becomes 1500mg/m³.
Carbon Dioxide (CO
2
) (67 28521)
REQUIREMENT - MAXIMUM READING OF 500 PPM
The media in the detector tube will discolour to show the presence of carbon dioxide. The total
length of the discoloration read from the printed scale at that point is a measure of the concentration
in parts per million.