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<9. CALIBRATION>
9-4
IM 11P03A03-01E 6th Edition : Jan. 26, 2022-00
CAUTION
• For semiautomatic calibration, wiring and piping for automatic calibration are required.
• If the calibration start contact remains closed after calibration, the instrument will not accept
the next calibration start contact input. The contact should be opened once and then closed
again for the next calibration.
• During MAINT mode, the calibration start contact input signal is not accepted.
• During manual calibration or automatic calibration, the calibration start contact input signal is
not accepted.
• If the instrument is switched to MAINT mode by key operation while a semiautomatic
calibration is being conducted, the calibration will be aborted.
9.3.3 Automatic Calibration
Calibration can be automatically executed for preprogrammed calibration times at
preprogrammed intervals. For the automatic calibration, the following should be set.
• For the zero calibration time (Function No. 52), span calibration time (Function No. 53), and
purge time (Function No. 54), refer to Section 9.3.2, Semiautomatic Calibration.
• Initial wait time (Function No. 50)
The amount of time until the first calibration is executed after the automatic calibration
function was started. The setting range is from 0 day 0 hour to 99 days 24 hours. When the
time is set to “00 day 00 hour,” the initial wait time is equal to the time set as the calibration
interval (Function No. 51).
• Calibration interval (Function No. 51)
Set the time interval for automatic calibration. The setting range is from 0 day 1 hour to 99
days 24 hours.
• Execution of span calibration (Function No. 55)
Set whether or not to execute span calibration. To execute only zero calibration and not to
execute span calibration, set to “0.” To execute both zero and span calibrations, set to “1.”
• The number of times of skipping span calibrations (Function No. 56)
The number of times of skipping span calibrations can be set only when “1” is set in
Function No. 55. Setting to “0” here means that span calibration is not skipped, i.e., both
zero and span calibrations are executed each time. Setting to “1” or greater means that
span calibration is skipped the set number of times after the first zero and span calibrations.
The setting range is from 0 to 99 times.
• Starting automatic calibration function (Function No. 57)
Set to “1” to start the automatic calibration function. After the set initial wait time has elapsed,
the first calibration starts.
Figure 9.2 shows the timing diagram when the number of times of skipping span calibrations
(Function No. 56) is set to “2.”