Asset management is a powerful tool that allows you to perform, among other actions, reading process variables, obtaining diagnostics, parameterizing and calibrating analog field instruments such as temperature, pressure, flow, valve meters, etc. With this tool, we can predict a future failure based on information stored in an asset history. This means that the maintenance team will act on the cause (predictive maintenance) and not just on the effect (corrective maintenance).
This is extremely important, as it will be possible to plan maintenance without having to stop the subsystem, which will result in a significant reduction in production losses due to maintenance hours. This management is possible through the use of equipment that supports the protocol. HART.
HART over PROFIBUS profile for asset management
As can be seen in the post about what is the HART protocol and what is it for, the standard consists of an open protocol that was developed in the 1980s with the aim of enabling predictive maintenance and remote parameterization of analog process devices. This is possible through access to other information from field instruments, in addition to the information on the main variable made available to the automation system.
To illustrate how HART can be applied to a complex asset management system, a team of experts from Altus published the article ASSET MANAGEMENT APPLIED TO OIL PLATFORM. The document, released in 2010, presents a case study of a Petrobras oil platform installed in the Campos Basin in which a HART architecture over PROFIBUS is used for asset management in two of the automated subsystems.
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