Yokogawa IR400 - Manual (Page 60)

6 - 21
IM 11G02N01-01E
Start time
Cycle
Flow time
ON/OFF SUN
12
300
ON 12:00
hour
sec
(An example of “Ch1: through Ch5: enable,” as given in Item 6.2.4 “Auto Calibration
Components/range”)
Flow time
: Auto zero calibration
Sunday
12:00
Cycle
Zero
calibration
300sec
Monday
0:00 Monday
12:00
Example
In case where auto zero calibration is carried out at the above setting.
Gas replacement time after calibration is the same as
the flow time.
Replace-
ment
time
300sec
Cycle : 1 to 99 hours or 1 to 40 days (initial value 7days)
Flow time : 60 to 900 sec (initial value 300sec)
Setting range
When an auto zero calibration starts, the measurement screen automatically appears.
Any key operation other than key lock ON/OFF and "Stop Auto Zero Calibration"
(see Item 6.5.2) is notpermitted during auto zero calibration. “Stop Auto Zero Calib-
ration” cannot be performed with the key lock to ON. To cancel auto zero calibration
forcedly, set the key lock to OFF and then execute “Stop Auto Zero Calibration.”
If the auto calibration period and auto zero calibration period have
overlapped, the auto calibration is retained, ignoring the auto zero calibration
of that period.
When the hold setting is set to ON, the hold time of auto calibration contact
and measurement value output signal is extended after calibration for gas
replacement time.
Turn on the power again after it is turned off (including the case of power
failure) at the time set as the next start time in auto zero calibration, and then
repeat it in the set cycle.
Caution
•
•
•
•
•
Auto calibration status contact output is closed during auto zero calibration, and is open in other cases.