Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 180)

IM 11M12D01-01E 10-18
F10.22E.EPS
21.00%
Ch2
1min./div.
0.98%
21.0 %O2 CHK. TIME
Semi-auto ind. chk
Fig.10.22 Indication Check Graph
Starting Semi-auto Indication Check by a contact input
1) Confirm that on the Input contacts display, [Ind. check start] is selected for the
contact to be used to start indication check.
2) When the contact input is detected then Indication check starts.
3) To abort Indication check, touch the Reject key. If you abort Span, Zero, or third gas
Indication check then Indication check time is skipped and stabilization time starts. If
you touch the Reject key during stabilization time, then stabilization time is skipped
and indication check for the next channel starts.
10.4.6 Starting Auto Indication Check
No user action is required to start auto indication check. Auto indication check starts at
the preset time and is repeated at the preset interval (same as calibration interval).
CAUTION
Before starting Semi-auto indication or Auto indication check, operate the calibration
gas and 3rd check gas solenoid valves and adjust gas flow to 600
Ϯ60ml/min for
each sensor.
If you skip stabilization time, then "indication check" status also ends, and output
hold status is released (unless "under maintenance" hold is set, in which case this
hold applies). However, while traces of calibration gas remain in the sensor, the
analog output may not be accurate.