Improving wireless control systems

摘要

There is no universal technology that covers all interface applications. Process conditions not only affect and change the properties of the media, but also influence the performance interface measuring equipment. Traditional displacer or differential pressure technologies operate according to different densities of the media. Changes in process temperature and densities will cause measuring errors. When measuring interface levels, there are further considerations. Is the overall level constant or variable - and, if variable, what is the variation? Is only the interface level measurement required, or is the overall level needed as well? Answering these questions will help in the selection of the appropriate instrumentation.