For the control of the chemical processes in the process industry Distributed Control systems (DCS) are applied. These systems is the brain within these factories. The choice of DCS for a concern is a matter of strategic importance...
High demands are made to the availability of a DCS and if the concern made a choice, she is committed to it for a lengthy time. Replacing a DCS is a very valuable matter because of the arisen production loss at a reconstruction for example. The service costs of a DCS could be a multiple amount of the initial investment during the life span...
The process industry in the world for approximately spends 65.032 billion dollar (2006) per year at the top 50 suppliers on process control systems (included DCS).