Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 454)

<Appendix D Action of External Input and Output Signals>
App.D-9
IM 11B08A01-01E
Type Display width of chromatogram signals Relevant chromatogram type
None The display width is fi xed at 1000.000 mV. —
Individual gain The display width is determined for each peak
using the auto gain value specifi ed for each
individual peak.
A/O chromatogram
HMI chromatogram
ASET chromatogram
Overall gain The display width is determined at once for all
detectors using the overall gain value specifi ed in
the detector signal setting.
A/O chromatogram
HMI chromatogram
 Auto Zero
This is a function to change the zero point of chromatogram signals according to the auto zero
value.
Type Display width of chromatogram signals Relevant chromatogram type
Automatic
acquisition
The signal level automatically acquired at the
auto zero time (s) specifi ed in the detector signal
setting is regarded as the zero value.
A/O chromatogram
HMI chromatogram
Auto zero
value
The auto zero value specifi ed for each individual
peak in the detector signal setting is used.
A/O chromatogram
HMI chromatogram
Invalid The zero value is fi xed at 0.000 mV. —
1 1 / 1 1 / 2 2
1 5 : 1 5 : 4 5
Detector Setup (1/2)
1 1 / 1 1 / 2 2
1 5 : 1 5 : 4 5
Detector Setup (2/2)
Oven # 1 Det # 1 ( FID ) Oven # 1 Det # 1 ( FID )
> - Filtering const 0.500 > - Auto gain setting Unexecuted
- Sample rate 40 ms - Full scale value 0
- Square root calc req * * * * * - Auto zero Off
- Flame detect level * * * * * - Auto zero value 0.0000 mV
- Sense set 4.0 mV - Auto zero time 0.0 s
- Sense set 10 times
Menu Oven# Det# Menu Oven# Det#
F1 F2 F3 F4 F5 F6 F1 F2 F3 F4 F5 F6
Figure 10 Auto Gain and Auto Zero Settings (Detector Signal Setting Screen on GC-HMI EtherLCD)
1 1 / 1 1 / 2 2
1 5 : 1 5 : 4 5
Peak Setup-Specifi c (1/5)
Stream #1 Peak #1
Using/Assigned peak num 1 / 10
>
- Process (Type) Peak
- Process (Detail) External 3rd
- Name H2
- Execution Excuted
- Synchronize to #01 #001
- Output fl ag Provided (31001)
- Range number 0
- Auto gain value 4
Menu Copy1 Copy2 Strm# Peak#
F1 F2 F3 F4 F5 F6
Figure 11 Auto Gain Value (Individual Peak Setting Screen on GC-HMI EtherLCD)
2nd Edition : May 11, 2012-00
App.D