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Honeywell?? model? Yokogawa ? ABB? Rosemount?
Honeywell
Honeywell has better performance.
I just need first to identify the real DCS players in the market which are:
1- Honeywell (Experion PKS)
2- YOKOGAWA (Centum VP)
3- INVENSYS (I/A)
4- EMERSON (Delta-V)
For ABB, if we are speaking about800xA, then this is not a DCS; this is just a toy compared to the above4. ABB bought ELSAG BAILEY and destroyed it. ELSAG BAILEY had true DCS Systems like infi-90 and Freelance (the best DCS I have ever seen in my life). Freelance belonged to Hartmann & Braun which was the king in the field of Automation and Instrumentation.
And yes, YOKOGAWA is the cheapest but Honeywell and INVENSYS are the best.
