CareFusion Smoke Check Meter Spezifikationen PDF herunterladen (Seite 31)

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At this time the subject should seal their lips around the mouthpiece

and exhale slowly and fully. The 20 second breath holding period is

recommended to allow time for equilibration of alveolar gas.

If, however, the subject is unable to hold their breath for this period,

the unit may still be used before 20 seconds have elapsed.

The unit must not be used, however, for one second after the unit is

first switched on i.e. before the countdown commences. Expired

alveolar gas is then entrapped between sensor and mouthpiece valve.

The display reading will rise to a plateau over the course of a several

seconds. The final value will be held until the unit is turned off and

represents parts per million CO or %COHb depending on the slide

switch position.

The lights will come on according to the table on page 4 and the red

light will flash and an alarm will sound if the measurement rises above

72ppm (12%COHb).

If this occurs then the possibility of CO poisoning should be

investigated as this level of CO is unlikely to be produced by cigarette

smoking.

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.

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CareFusion Smoke Check Meter Spezifikationen Seite 31