Optical fibre sensor for process tomography use on pneumatic conveyors

Process tomography involves the use of instruments which provide cross-sectional profiles of the distribution of flowing materials in a process vessel or pipeline. The results in this paper demonstrate the suitability of low-cost optical fibre sensors for monitoring such flowing materials. In particular, the sensors´ frequency bandwidth, when used to measure passing objects, is very high, typically tens of kilohertz. This high bandwidth makes them suitable for velocity measurement using cross-correlation techniques