lion alcolmeter
®
500 Mk IV User Handbook
31
Calibration CHECK Mode also ensures the instrument is in its
proper temperature range for checking purposes. A screen message
will appear if its temperature is below +15°C or higher than +30°C.
To enter Calibration CHECK Mode, press and release FSA, then,
just after you hear the click, press and hold down FSB until the serial
number screen appears, then release FSB.
Press FSB. again to select Calibration CHECK Mode, or FSA to
move on to the Supervisor Menu.
7.5 The Calibration CHECK Procedure
Firstly, the instrument to be checked should not have analysed any
sample containing alcohol in the last 30 minutes. Now, follow the
instructions above to enter Calibration CHECK Mode.
Because dry gas is used for this checking procedure, for technical
reasons the instrument temperature MUST be in the range +15 to
+30°C. If this condition is not met then calibration checking is not
possible. Assuming the temperature is in range, the display shows:
Prepare the AlcoCal
®
for use: check the expiry date has not passed,
that the gauge shows there is enough gas; and the altitude, if
relevant. If the cylinder has not been used in the last two hours, hold
Calibration
CHECK
Large Button: SELECT
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