Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 159)

IM 11M12A01-03E 10-11
10. Other Functions
10.2.1.4 Setting Interval, Start Date, and Start Time
The interval is the time to execute blowback. Display the numeric-data entry panel
display to set the desired interval from 000 days, 00 hours to 255 days, 59 hours.
For the “Start day” and “Start time,” set the date when the blowback is first executed
and the time when to start the blow back, respectively. If you want to execute the first
blow back, for example, at 4:00 p.m. on March 25, 2001, enter 25/ 03/ 01 for the Start
date and 16:00 for the Start time.
Mode: Auto
᭜ Hold time: 1 0 min 0 0 s
᭜ Blow back time:
1 0 min 0 0 s
᭜ Interval: 3 0 d 0 0 h
᭜ Start date: 0 1 / 0 1 / 0 0
᭜ Start tine: 0 0 : 0 0
Enter
Blow back setup
F10.10E.EPS
Figure 10.10 Blow back Setup Display
In the Blow back setup display shown in Figure 10.10, if you choose “Mode: No
function” or “Semi-auto blow back,” the Interval, Start Date, and Start Time for these
are not displayed.
CAUTION
• If the blow back is executed with an input contact, it must be preset in the Input
contacts setting (for more details, see Section 8.5, earlier in this manual).
• In Section 8.4, “Output Contact Setup,” earlier in this manual, set the contact used as
the blow back switch beforehand.
• Do not set any other function for the contact used as the blow back switch. Other-
wise, blow back may be activated when the contact is closed by any other function.
• No blow back is executed during calibration or maintenance service. If automatic
blow back reaches the preset start time during calibration or maintenance service,
blow back will be executed after completing the calibration or maintenance service
and after the equipment returns to the measurement mode.
• If automatic blow back reaches the preset start time during semi-automatic blow back,
the current automatic blow back will not be executed.
• If you set the blow back interval at 000 days, 00 hours, only the first blow back is
then executed. No subsequent blow backs will be executed.
• If a past date is set for the Start time, no blow back will be executed.