Prior to the distillation process, the crude oil is directed through heat exchanger units to preheat and thin the crude oil, making it ready for the for the next step in the process.
Temperature measurements are necessary for efficient steam regulation through the primary side of the heat exchanger. This can be accomplished with the PR 5335D 2-wire transmitter with HART protocol. The 5335D is safely energized by the 9106B HART transparent repeater.
Both the 5335D and the 9106B are IS & SIL 2 rated which was required by this application.
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