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Description / Intended Use
The Dräger Aerotest Alpha determines the quality of the breathing air
delivered by a low pressure system (compressor, compressed air
cylinder or compressed air network). The maximum supply pressure
at the device inlets is 15 bar. Dräger tubes
®
are used for the
measurements.
The levels of the following substances can be measured:
— Oil
— Carbon dioxide (CO
2
)
— Carbon monoxide (CO) and
— Water vapour (H
2
O).
These four values can be defined either simultaneously or individually.
The measurement precision remains constant regardless how many
tube holders are loaded. By contrast, the assigned functions of the
Dräger tubes
®
/ tube holders must be taken into account. In other
words, in order to check e.g. the oil content of the breathing air, the
oil tube must be loaded in the appropriate holder marked “oil“.
The permissible limit values are defined in EN 12 021 (Compressed
air for breathing apparatus).
Measuring Unit: Pos. 9
The measuring unit needs a supply pressure of 3 bar.
Pressure Control Valve: Pos. 8
The pressure control valve is preset to 3 bar of relief pressure.
When the supply pressure changes from 3 to 15 bar, the relief pres-
sure (3 bar) at the handwheel of the pressure control valve must be
readjusted. Check via the pressure gauge.
All the components required for measurement are housed in a handy
carrying case.
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