horiba GA-370, Instruction Manual

Page: 40 / 95

3 Operations
24
Tip
If calibration fails, the calibration alarm is triggered, and the ZERO CALIBRATION screen
3 (when calibration alarm occurrence) appears.
3.3.5 Span calibration
Connect the span gas to the analyzer.
Before executing calibration, perform the procedures described in "Calibration range settings"
(page 20) and "Span gas concentration settings" (page 21).
Note

Use a gas for which the base gas of the span gas is the same component as the sample gas
and that is approximately 90% of the usage range.

For details about warranty of the span gas concentration and valid term, please contact local
gas cylinder provider.
Operating procedure
1. Switch [MODE] to span of the corresponding component in the CALIBRATION
screen.
2.
Press the button to display SPAN CALIBRATION screen 2 (calibration
execution).
3.
After the measurement value has stabilized, press the [SPAN] button of the
component to be calibrated.
Fig. 21 SPAN CALIBRATION screen 2 (calibration execution)
4.
The "Execute calibration?" confirmation message appears so press [YES] to
perform calibration.
If [NO] is pressed, calibration is not performed.
Tip
If calibration fails, the calibration alarm is triggered, and the SPAN CALIBRATION screen 3
(when calibration alarm occurrence) appears.