4 indication check, Caution, Indication check setup – Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G User Manual
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IM 11M12D01-01E
10-11
10. Other Functions
10.4 Indication Check
In addition to zero and span calibration gases, you can select a third check gas for a 3-
point check. This is another check to determine if there is any discrepancy between the
measured value and the certified concentration of the gas.
10.4.1 Mode
There are three modes of indication check operation: manual, semi-automatic, and
automatic. In Manual mode, zero, span, and third gas indication checks can be per-
formed sequentially and manually. In Semi-auto mode, an indication check can be
started by key operation on the display or by a contact input signal, and then sequen-
tially performed at a preset check time and hold time. In Auto mode, indication checks
are automatically performed at preset intervals.
The following restrictions apply:
ؒ When [Manual] is selected
In this mode, only Manual Indication Check can be performed. (Contact input used to
start Semi-Auto Indication Check has no effect. Auto Indication Check does not start at
Auto Indication Check start time).
ؒ When [Semi-Auto] is selected.
In this mode, Manual Indication Check or Semi-Auto Indication Check can be per-
formed. (Auto Indication Check does not start at Auto Indication Check).
ؒ When [Auto] is selected.
Indication Check can be performed in any of the three modes.
CAUTION
When [Auto] Calibration mode is selected, you cannot also select [Auto] Indication
Check mode. The reverse also applies: if you select [Auto] Indication Check mode
then [Auto] Calibration mode cannot be selected.
display, then select [Maintenance].
2) From the Maintenance display, select [Indication check setup] then [Mode]. A
dropdown menu opens, allowing you to select between Manual, Semi-auto, or Auto
modes (see Figure 10.9).
Enter
F62E.EPS
᭜
Points: Semi-auto-Third
᭜
Timing
Indication check setup
Mode: Semi-auto
Manual
Semi-auto
Auto
Fig. 10.9 Indication Check Mode Selection