22
Span Rough Adjustment
This adjustment mode is used after replacing the sensor or when adjustment cannot be
performed with the 21.0 vol% adjustment.
1)
Apply calibration gas corresponding to the Detector.
2)
Sufficiently stabilize the gas.
3)
While in gas monitor mode, press the MODE switch on the Detector first. Then press
the UP switch with the magnetic stick within approximately 2 seconds.
4)
Press the UP or DOWN switch on the Detector with the magnetic stick and adjust the
value to
【
】
.
5)
Press the ENTER switch on the Detector to start the operation.
6)
The Detector displays
【 】
first, and then displays the present gas
concentration.
7)
Press the UP or DOWN switch on the Detector with the magnetic stick, and adjust the
display of the Detector to a value close to the actual span gas concentration. In the
presence of atmospheric air, adjust the display to 21.0 vol%.
8)
After adjusting the display on the Detector to a value close to the span gas
concentration, press the ENTER switch on the Detector.
9)
The span rough adjustment is completed when
【 】
is displayed.
10) On completion of the span rough adjustment, the Detector will automatically return to
gas monitor mode.
MEMO
Precise adjustment is not performed by the span rough adjustment alone. Be sure to
perform the 21.0 vol% adjustment after the span rough adjustment.
z
If an error is displayed, refer to 10. Trouble Alarm.
z
Carefully handle and make settings with the magnetic stick because the magnet is
very powerful. For details, refer to 3. Contents of Package.
CAUTION
z
The external contact may operate during span rough adjustment.
Before performing span rough adjustment, set the product to maintenance mode or
release the interlocks of the external devices if needed.
z
Only your local representative’s maintenance service members or personnel who have
completed a maintenance seminar can perform span rough adjustment.
