SR570 supplied-air face shield
Copyright © 2020 by The S.E.A. Group
4
Drawbacks
If you decide to connect the SR570 to a
fixed air supply, mobility can be restricted
by the supply hose. In addition, the length
of the hose limits the distance the wearer
can move away from the source of the
breathing air.
If a PAPR is chosen, the user is no longer
limited in movement.
IMPORTANT:
about the quality of remote
supplied air for breathing:
•
The intake air at the source
(compressor etc.) must be free of
contaminants, or at least kept to a
minimum and never exceed hygienic
limit levels
•
Any mineral oil content must be kept
below the smell threshold level (about
0.3 mg/m3)
•
The air must not be so cold as to
cause internal freezing of the
equipment
If there are any doubts as to any of the
points above, a supplied-air filter should
be used, such as the Sundström SR99
airline filter in the picture
