Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 133)

<9. Calibration>
9-5
IM 11M12A01-02E
9.2 Calibration Procedures
NOTE
Calibration should be made under normal operating conditions (if the probe is connected to a
furnace, the analyzer will undergo calibration under the operating conditions of the furnace).
To make a precise calibration, conduct both zero and span calibrations.
9.2.1 Calibration Setting
The following sets forth the required calibration settings:
9.2.1.1 Mode
There are three calibration modes available:
(1) Manual calibration which allows zero and span calibrations or either one manually in turn;
(2) Semi-automatic calibration which lets calibration start with the touchpanel or a contact input,
and undergoes a series of calibration operations following preset calibration interval and
stabilization time.
(3) Automatic calibration which is carried out automatically following preset calibration interval.
Calibrations are limited by the following mode selection:
• When Manual calibration is selected:
Manual calibration only can be conducted. (This mode does not allow semi-automatic calibration
with a contact input nor automatic calibration even when its start-up time has reached.)
• When Semi-automatic calibration is selected:
This mode enables manual and semi-automatic calibrations to be conducted. (The mode,
however, does not allow automatic calibration even when its start-up time has reached.)
• When Automatic calibration is selected:
This calibration can be conducted in any mode.
To execute this calibration, follow these steps:
(1) Select the [Setup] key from the Basic panel display to display the Execution/Setup display.
Then select “Maintenance” from the Execution/Setup display.
(2) Select “Calibration setup” from the Maintenance display. Then select “Mode” from the
Calibration setup display (see Figure 9.4).
Now you can select “Manual”, “Semi_Auto”, or “Auto” calibration.
8th Edition : Jan.13,2012-00