Factair F4500, Operating Manual

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26
Appendix 3
Reading the Draeger Oil Impactor and Chemical Reagent Tubes
The Oil Impactor’s protective seal must be kept in place for the duration of the test and only
removed after the test has been completed.
With a standard measurement range of 0.1 to 1.0 mg/m
3
the Impactor has a limit of detection of
0.05 mg/m
3
. The Impactor can detect all mineral and synthetic oils, it features a series of 3 horizontal
lines, each formed by a series of precision manufactured nozzles. These horizontal lines of nozzles
are calibrated to a different concentration of oil. When air is passed through these nozzles any oil
present in the air is deposited on the glass plate prior to the air being exhausted by vents around its
circumference, this allows the user to easily and quickly identify minute quantities of oil.
For tests that pass with an oil concentration of less than 0.05mg/m
3
, the screen will remain blank. For
tests above that read as follows:
The bottom line represents an oil concentration of 0.1 mg/m
3
. When the oil deposited forms a
continuous line then the concentration is in excess of 0.1 mg/m
3
. The middle line represents a
concentration of 0.5 mg/m
3
, again when the oil deposited forms a continuous line the concentration
is in excess of 0.5 mg/m
3
. The top line represents a concentration of 1.0 mg/m
3
, again when this
forms a continuous line the concentration is in excess of 1.0 mg/m
3
.
Each pack of tubes has its own instruction leaflet but the following notes should help you take
readings after the tests have been completed.
Each tube has an expiry date which is located on the back of its storage box.
Pass -
greater
than
0.05mg/m
3
but less
than
0.1mg/m
3
Pass -
greater
than
0.1mg/m
3
but less
than
0.5mg/m
3
Fail - greater
than
0.5mg/m
3
but less than
1.0mg/m
3
Fail -
greater
than
1.0mg/m
3