An oil pipeline, which connects a Christmas tree at its lower end to an oil rig at its upper end, is fitted with a stainless steel tube sheathed telecommunications grade optical fiber, forming part of a distributed temperature measurement device, such as to be in thermal contact with the oil flowing along the pipeline. The modular electrode array includes a plurality of electrode modules, where an electrode module includes a plurality of electrodes. Instead, the pad sequence is merged at a read channel with data stored in a sector that is accessed by the read channel. Also, the time at which the graphical images are obtained is determined by trigger events, such as a new Web page being loaded.