Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 452)

<Appendix D Action of External Input and Output Signals>
App.D-7
IM 11B08A01-01E
F0503.ai
*1 2s 4s 2s 4s 2s 4s 2s 4s *1 *1 *1
Stream 1
End of Analysis
Stream 2
End of Analysis
Stream 1
End of Analysis
Stream 2
End of Analysis
AO1
AO2
AO3
AO4
DO1
(Stream
identification
flag)
DO2
(Stream
identification
signal)
DO3
(Stream
identification
signal)
Analog Hold Output
Contact Output
End of Analysis: Time when the final peak detection is completed or peak detection stop time.
*1:
One to two seconds (depending on analysis specifications)
End of Analysis: End of peak detection time in SYS method
*1: One to two seconds (depending on analysis specifi cations)
Figure 8 Example of Actions of Analog Output
(2) Chromatogram Output
This is a function to output chromatograms as A/O.
Up to eight outputs are available. One detector number (DET1-1, 1-2, 2-1, 2-2, 3-1, or 3-2) is
set for one A/O. The same detector number can be assigned to multiple A/Os. The auto gain
and auto zero can be set for each detector. Settings are specifi ed the detector signal setting
screen and the individual peak setting screen. These settings relate not only to the display of A/O
chromatograms but also to that of HMI and ASET chromatograms.
 Data Display Cycle
The A/O chromatogram data display cycle varies depending on the sample rate specifi ed for the
detector signal.
Sample rate (ms) A/O chromatogram data display cycle (ms)
40 80 (A chromatogram data is extracted every 80 ms from the main unit.)
80 80
160 160
* The HMI chromatogram data display cycle is the same as above.
2nd Edition : May 11, 2012-00
App.D