MAN0597 ISSUE 08 - 02/04
2302M5030
3. INSTRUMENT START-UP
30
If the " button is pressed the
instrument will zero the sensors
automatically, and display whether the
procedure was successful. The
oxygen reading will be adjusted to
20.9%v/v – the other sensor readings
will be adjusted to 0 ppm and 0%lel
appropriately. If the button is
pressed instead the instrument will
use its current zero values instead
and proceed to the monitoring screen.
Note: This is a ‘soft’ zero. Any adjustments only remain in
force whilst the instrument is switched on. To
permanently adjust the zero, the zero via the calibration
menu must be used (‘hard zero’).
3.4 SENSOR WARM-UP PHASE
Following display of the Autozero screen it will be noted that
the message 'Cell Self Test Please Wait' is displayed. This is
displayed while the sensors are in the warm-up phase of the
start-up procedure. If the option of Autozero is declined the
main gas measuring screen will be displayed with the
message 'Warm Up' being displayed in place of the gas
concentration readings. The instrument should not be used
until the 'Warm Up' message has disappeared. The amount of
time that the sensors are in warm up will depend on the sensor
type. Table 12.3.1 in section 12 of this manual gives details of
the warm up times for each of the sensors.
Are you in
fresh air?
✓ -Yes, -No
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