< 7. Startup >
7-10
IM 11M12D01-01E
15) When the graph trace stabilizes, touch the Enter key. The display changes to like Figure 7.16.
The measured value is adjusted to read the same as the zero gas concentration set value, and a
check mark appears in the check box beside Zero calibration.
Close the zero gas flow setting valve and tighten the lock nut used to prevent it from loosening
during measurement.
Enter
F7-16E.ai
Ch1
Manual cal.
Span calibration
Zero calibration
Span calibration
End
Close the zero gas valve.
Figure 7.16 Calibration complete
16) Select [End] and touch the Enter key. The oxygen concentration graph is displayed and
the [HOLD TIME] status mark appears. The graph trace changes gradually from zero gas
concentration to sample gas concentration. During this “Output stabilization (settling) time” if
“Output hold” is set, then the analog output is held at the corresponding preset value. For details
of “Output hold” refer to “Subsection 8.1.2 Output Hold Setting”.
Shipping-time default setting is for stabilization (settling) time to be set to 3 minutes. After the
stabilization (settling) time has elapsed then the display reverts to channel select (Figure 7.10) so
that you can select another channel for calibration. If you touch the enter key during stabilization
(settling) time then stabilization (settling) time is skipped and you are returned to the channel
select display.
7.10 Analog Output Current Loop Check
After wiring the cables you can perform a loopback check to check if you can output a specified
current from the analog output terminals.
1) Touch the Setup key to switch to the [Execution/Setup] display.
2) Select [Maintenance] and touch the Enter key.
3) From the Maintenance display select [mA-output loop check], and touch the Enter key.
4) The “mA-output loop check” channel-select display appears (Figure 7.17).
Enter
Ch1
Ch2
Ch3
Ch4
Ch5
Ch6
Ch7
Ch8
F7-17E.ai
Ave-a
Ave-b
Ave-c
mA-output loop check
Figure 7.17 Analog output select
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