CareFusion PrinterNOx - Page 13

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11
The PrinterNOx utilises a sidestream gas system, which is servo
controlled to sample at a constant rate of 250 ml/min. By supplying
the gas sensors with this constant flow, a high degree of accuracy
and sensitivity can be achieved.
To carry out NO / NO
2
measurement, press “1”.
The sampling pump will start and the following screen will be
displayed:
15
5p
p
4m
PressENTERformenu
NO
NO
000
000
2
.
.
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The system should now be tested for leaks by occluding the
sampling line. The pump will be heard to rise in pitch as the servo
system tries to overcome the restriction.
As the pump cannot maintain the required flow rate then the
measurement will cease to be displayed, the pump will continue to
run, and the following message will be displayed:
GasLineOccluded
orwatertrapfull
Pleaseclearblockage
oremptywatertrap
andfilter.
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