8
will be obtained if they hold their breath until the buzzer
sounds and the display changes to:
B
l o w
0
- 6
p
p
m
The CO reading will rise to a plateau over the course of
several seconds. The final value will be held until the unit
is turned off and will be displayed in one of the four
ranges:
0
–6 ppm with green indicator
7
–10 ppm with amber indicator
11
–20 ppm with red indicator
20+ ppm with flashing red indicator and alarm
Important note:
Before repeating a measurement the unit must be
turned off, and the mouthpiece and adapter removed
for at least 1 minute. This is to allow re-equilibration
with ambient air and to dry the surface of the sensor.
Visually inspect that all moisture has evaporated from
the surface of the sensor before reuse.
If the unit is switched on again too quickly after
use there may be a response to residual expired
carbon monoxide from the previous test.
Summary of Contents for SmokeCheck
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