lion alcolmeter
®
500 Mk IV
User Handbook
42
initially set by the user into the instrument as the final value, and then
the reading obtained on analysing the standard vapour is made to
correspond with that setting. This then ensures that during
subsequent breath testing all digital readings are accurate.
NOTE:
When using a dry-gas standard, the
500’s
temperature must be in the range 15 - 30°C.
11.3 Use of the AlcoCal
®
Standard
Please follow the instructions for its preparation and use as given
in
Section 7
of this
User Handbook
.
11.4 The Calibration ADJUSTMENT Procedure
1. Switch on and access the
Calibration ADJUSTMENT
option
of the
Supervisor Menu
, as described above.
2. The instrument temperature must be
in the range 15 - 30°C. Assuming
this condition is met, the next screen
to appear will be:
3. Use
FSA
to change the displayed number to agree with the
known alcohol standard [after making any allowance for
altitude for a dry-gas]; then press
FSB
to
ENTER
.
4. When the instrument is ready, take a sample of the gas:
Standard Value:
0.35mg/L
Large Button: ENTER
Small Button: NUMBER
Sample Taken
