A comparison between fieldbuses and remote I/O for instruments in the process industry

New technology arises in all areas. Some just last for a few years before someone else develops a better technology. This makes it hard to decide whether and when to use new technology. Being a contractor for the process industry, like Outokumpu Technology, does not make it easier to decide since these systems usually runs for at least 15 years. The aim for this Thesis is to provide information about fieldbus technology for the process industry. Although it has existed for several years far from everyone uses it. The Thesis focus on fieldbuses at instrument level. The knowledge, both of the contractor and the buyer, is of great importance. Both advantages and disadvantages have been identified with fieldbuses that can be used to decide whether to use fieldbuses or not.Validerat; 20101217 (root