Yokogawa GC1000 Mark II Process Gas Chromatograph - Manual (Page 37)

4-2
<Toc> <Ind> <4. Outline of Software >
IM 11B03A03-01E 3rd Edition : Aug. 23. 2006-00
4.1.1 Process
In the Process status normal process measurements, calibration, and validation are per-
formed. When power is applied, the status enters Process.
The Process status contains the following measurement statuses.
• Stream Sequence: Continuously measures streams in order specified in Stream
Sequence
• Stream (continuous): Continuously measures the specified stream
• Stream (1 cycle): Measures the specified stream once
• Calibration/Validation: Performs calibration or validation of the specified number
Figure 4.2 shows the transitions of measurement statuses.
Stream Sequence Stream (coninuous)
Cal/Val Stream (1 cycle) Cal/Val
(Same as the status)
F0402.EPS
Note: When Calibration/Validation has been specified from Stream Sequence, the measurement status returns to Stream
Sequence after the completion of calibration/validation. When Calibration/Validation has been specified from Stream
(continuous), the measurement status returns to Stream (continuous) after the completion of calibration/validation.
Figure 4.2 Measurement Status Transition Diagram
The following explain each measurement status in detail.
(1) Stream Sequence
In the Stream Sequence status, the analyzer continuously measures multiple streams in
order. When power is applied, the measurement status enters Stream Sequence. Four
kinds of stream sequences can be used with the GC1000 Mark II. For each steam se-
quence 31 streams can be set in order. If number "0" is set as a stream number, the
measurement skips the order and goes to the stream specified in the following number.
Note that number "0" cannot be set as the first stream number, which needs any number
between 1 and 31 to be specified.
(2) Stream (continuous)
In the Stream (continuous) status, the analyzer continuously measures the specified
stream. With the GC1000 Mark II, 31 streams can be specified. In the Stream (continu-
ous) measurement status, the analyzer measures the stream specified from among the 31
streams.
(3) Stream (1 cycle)
In the Stream (1 cycle) status, the GC1000 Mark II measures the specified stream once.
Like Stream (continuous), the analyzer measures the stream specified from among the 31
streams.
(4) Calibration/Validation
In the Calibration/Validation status, calibration or validation is performed using a standard
sample. Validation is to verify, using a standard sample, whether the measurement of the
GC1000 Mark II is normal. This function can be used in combination with calibration:
calibration is conducted when the increased error between a measurement result and a
standard sample is seen during the regular validation.