“IMPLEMENTING Foundation Fieldbus H1 Networks in Hazardous Areas” provides a rigorous discussion of hazardous environments, the standards and practices involved, and considerations for installing a Foundation Fieldbus H1 system.
The author, Bruce Bradley a Canadian engineer, is an experienced fieldbus user currently using this paper in the class he teaches on hazardous environments.
The white paper first describes everything a user or systems integrator should consider about applying fieldbus in hazardous areas, then it describes how Boehringer Ingelheim Chemicals installed fieldbus equipment in its environment, a Class 1, Division 1 and 2, Groups C/D pharmaceutical plant.
The paper can be downloaded as a PDF from http://www.miinet.com/articles.