Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 112)

<1. Overview>
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IM 11B08A01-01E
(4) Gate tracking function
This is a function to track (correct) the gate ON/OFF time to be used for peak detection and the
operation time of base level processing by using tracking factor a/b, subsequent to fl uctuation of
retention time due to such changes as ambient temperature and atmospheric pressure, carrier
gas supply pressure, and aged deterioration of column.
 Tracking specifi cation
Set whether to execute tracking.
Perform this setting per SYS method. When multiple detections are set at SYS setting for the
relevant SYS, they are treated as single setting.
 Automatic renewal of tracking factors
Set “Update” for automatic renewal of tracking factor a/b.
Set “No Update” to enter the set value of tracking factor a/b.
Perform this setting per SYS method. When multiple detections are set at SYS setting for the
relevant SYS, they are treated as single setting.
11/03/22
15:15:45
SYS Method Set
GCM #1 / SYS #1 / Method #1
- Execution
On
- Cycle time 300.0 s
- End of peak detect 280.0 s
- Tracking exec Executed
> - Tracking coef updating Updating
GCM Seq Temp EPC Copy SYS#
F1 F2 F3 F4 F5 F6
Figure 1.43 Tracking specifi cation and automatic renewal of tracking factors in SYS method setting
(GC-HMI EtherLCD)
 Timing and target for tracking
When “Execute” is set for “Tracking specifi cation” in SYS method, perform correction of the gate
ON/OFF time and the operation time of base level processing by using the latest tracking factor
a/b after completion of peak detection of all the peaks of the relevant SYS method, and re-detect
the peak and re-calculate the concentration.
Tracking (correction) is performed only for the peaks for which “Standard” or “Tracking” is set for
“Automatic renewal of tracking factors” of the peak individual setting.
2nd Edition : May 11, 2012-00
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