Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 186)

IM 11M12D01-01E 10-24
10.5.5 Performing Blowback
10.5.5.1 Semi-Auto Blowback
Semi-auto blowback can be started from the display or by an external contact input.
Starting blowback from the display
1) On the basic panel display, touch the Setup key to display the Execution/Setup
display. Select [Blowback]. Next select [Blow back start] and touch the Enter key.
Blowback is performed starting from Channel 1.
2) If a display like Figure 10.27 appears, then mode is set to [No function]. Refer to
Section 10.5.1, "Mode" and change the mode appropriately.
3) During blowback a display like Figure 10.28 is displayed, with the affected channel
number blinking.
4) To abort blowback, you can touch the Reject key to skip the blowback time and enter
the hold time. If you touch the Enter key here, then blowback for the next channel
starts; if you touch the Reject key, then hold time is skipped and you revert to
measurement mode.
Enter
F77E.EPS
Blow back
Blow back mode is
No function
or Not set contact.
Ch1
9. 1 9 %
O2
Ch2
2 1. 9 %
O2
Ch3
2 0. 3 %
O2
Ch4
2 1. 7 %
O2
Ch5
2 1. 1 %
O2
Ch6
2 0. 7 %
O2
Ch7
2 0. 3 %
O2
Ch8
1 9. 6 %
O2
F78E.EPS
BLOW TIME
Blow back
Fig 10.27 No Function (Disabled) Fig. 10.28 Performing blowback
Starting Blowback by a Contact input
1) Confirm that on the Input contacts display, [Blow back start] is selected for the
contact to be used to start blowback.
2) In measurement mode (with the basic panel display displayed) when the contact input
is detected then blowback starts.
3) To abort blowback, touch the Reject key. Touch the Reject key to skip the blowback
time and enter the hold time. If you touch the Reject key again during hold time,
then hold time is skipped and you revert to the basic panel display; if instead you
touch the Enter key then blowback for the next channel starts.
10.5.5.2 Auto Blowback
No user action is required to start blowback at the preset time and repeat it at the preset
interval.