The present invention relates to online analysis of crude oil from desalting processes. An actual time of arrival is determined for each of the plurality of RTP packets. A slide rail guides the chain in a chain movement direction and is tiltably supported for tilting movement relative to a support. The guide may be a guide slot position parallel to, but axially offset from, the internal bore. This adjustment can be done either by a service processor, which can monitor total energy consumption, or an as or software running on the host processor, which can read energy consumption from the service processor and adjust the shared table.