Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 65)

<1. Overview>
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IM 11B08A01-01E
1.12 Analyzer operation
The GC8000 operates in two operating statuses: the process status and the manual status. The
operating statuses are changed to each other in the stop mode. The process status is set when
the equipment is turned on.
1.12.1 Process status
Normal process measurement, calibration, and validation are performed in the process status.
The following measurement statuses are available in the process status. The measurement
status is set to “Stream sequence” when the equipment is turned on.
Measurement status Function User level Operation
button
Stream sequence Measures streams in series in a preset sequence. B or higher
Stream designation Measures the designated streams continuously or a
specifi ed number of times.
Also stops operation after the specifi ed number of times of
measurement.
B or higher
Calibration (Validation) Gives a command to change the measurement setting to a
preset pattern among Calibration 1 to 6 or Validation 1 to 6.
B or higher
Command cancellation Cancels a command to change the measurement status. C or higher
Start of calibration (or
validation)
Gives a command to start calibration (or validation).
This is used for manual calibration (or validation).
B or higher
Termination of calibration
(or validation)
Gives a command to terminate calibration (or validation).
This is used for manual calibration (or validation).
B or higher
Start/termination of
automatic calibration
Gives a command to start or terminate automatic
operation.
This is not available when manual or semiautomatic
calibration (or validation) is selected.
C or higher
The following modes are available in the process status.
The process status and the manual status can be changed to each other in the stop mode.
Run • A mode to perform measurement
• Measurement is started in this mode.
Users at Level B or higher are allowed to activate this mode.
Pause • A mode to suspend measurement
• In the process status, measurement is suspended in this mode at the
time preset by the GCM method.
Users at Level B or higher are allowed to activate this mode.
Stop • A mode to stop measurement
• In this mode, measurement is continued through the main cycle preset
by the GCM method, and then stopped.
Users at Level B or higher are allowed to activate this mode.
Command
cancellation
• Operation mode commands waiting for execution are canceled in this
mode.
Users at Level B or higher are allowed to activate this mode.
Forced stop • The current operation mode is forcibly terminated in this mode.
Users at Level C+ or higher are allowed to activate this mode.
Figure 1.19 shows the transition among measurement statuses and operation modes.
2nd Edition : May 11, 2012-00