koba78
Petroleum
- May 10, 2011
- 30
Dear Sir/Madam
I have some stupid question need to bother you.
A control logic and soft link query is in the following.
1.As outlet flow of the he STC vaporizer is low, it will initiate
the interlock to stop the HCl feed from the compressor, but I don't know how this two action can couple together. It seems unrelated that the HCl feed stop as STC decrease from the two formula (at attachment).
2. Why the two DCS rectangle interconnect through electrical signal instead of soft link (Please see attachment).
That is my stupid querry and hope you can help me out.
appreciated your kindly assistance
I have some stupid question need to bother you.
A control logic and soft link query is in the following.
1.As outlet flow of the he STC vaporizer is low, it will initiate
the interlock to stop the HCl feed from the compressor, but I don't know how this two action can couple together. It seems unrelated that the HCl feed stop as STC decrease from the two formula (at attachment).
2. Why the two DCS rectangle interconnect through electrical signal instead of soft link (Please see attachment).
That is my stupid querry and hope you can help me out.
appreciated your kindly assistance