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4.
The patient may have a very high level of hydrogen on their breath, which can be generated
in the human digestive system.
5.
The sensor may have drifted out of specification (see below).
The sensor has drifted out of specification:
Smokerlyzer® products are calibrated before leaving Bedfont®, however we recommend if you
suspect the instrument is reading incorrectly, try the test again with another device if available to
get a comparison. Alternatively you check the function using Bedfont® check gas or send back to
Bedfont®. The check gas required is Bedfont® 20ppm carbon monoxide in air, procedure below.
1.
Ensure the fine control valve is in the off position.
2.
Screw the fine control valve and flow indicator assembly to the gas can. This is best done by
screwing the gas can into the valve.
3.
Press ‘breath test’ symbol on screen,
or
, to start a breath test.
4.
When prompted by the ‘exhale’ symbol,
or
, open the fine control valve or
regulator and allow the gas to flow at 1 litre per minute.
5.
Allow the gas to flow through the instrument for the duration of the test, again monitoring
the rate of flow.
6.
If the final displayed value is less than 15ppm or higher than 25ppm, stop the test and
perform a calibration or send back to Bedfont® for a free of charge calibration, following the
instructions below.
Calibration procedure:
1.
Turn on the monitor by pressing the power button once
2.
Press
3.
Start the calibration process, pressing the
symbol 5 times and then
once to
proceed
4.
If the temperature of the monitor is too low to calibrate, the blue thermometer will be
shown
. Try again later once the unit has warmed up – if this problem persists please
contact Bedfont® or your local supplier.
5.
If the temperature of the monitor is too high to calibrate, the red thermometer will be
shown
. Try again later once the unit has cooled down – if this problem persists please
contact Bedfont® or your local supplier.
6.
Once this has been successfully carried out the device will perform a zero;
do not apply gas
at this stage
7.
The first step of the calibration process will be shown onscreen; follow the onscreen
instructions to finish the calibration process
