Yokogawa GC1000 Mark II Process Gas Chromatograph - Manual (Page 38)

<4. Outline of Software >
4-3
IM 11B03A03-01E 3rd Edition : Aug. 23. 2006-00
Three ways of calibration and three ways of validation can be used with the GC1000 Mark
II.
There are three methods for Calibration/Validation: automatic, semiautomatic and manual.
The following explain the actions of three methods.
•Automatic
Calibration or validation is conducted automatically at the specified time. This function
is only available when automatic valves are used for streams for calibration or valida-
tion.
When Calibration/Validation is set to automatic, the analyzer starts calibration or
validation at the specified starting time and subsequently conducts calibration or
validation every time after the specified interval time elapses. When the operation
mode is in Stop or Pause at the time of automatic calibration or validation, the calibra-
tion or validation for the time is cancelled.
• Semiautomatic
When the calibration number or validation number is specified, the valves for streams
for calibration or validation automatically open and the analyzer performs calibration
or validation. This function is only available when automatic valves are used for the
stream.
• Manual
When the calibration number or validation number is specified, the valves for all
streams are closed so that the analyzer is ready to allow a standard sample to flow.
The standard sample is supplied manually for displacement, making the analyzer
ready to accept a command. After the displacement is conducted adequately, the
analyzer performs calibration or validation by the start command.
Each measurement status has the following operation modes, with the exception of the
Stream (1 cycle) and Calibration/Validation statuses which do not have Stop and Pause.
• Stop: Mode in which the measurement stops
• Run: Mode in which the measurement is running
• Pause: Mode in which the Run mode pauses
For the transitions of the operation modes, refer to Figure 4.1.
To transfer from the Run mode to the Stop mode, two commands are used: stop command
and forced stop command, which are explained below.
• Stop command
The measurement stops after an ongoing measurement has been completed.