Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5779079 | Aeolian Research | 2017 | 8 Pages |
Abstract
For the two possible settings of the Wenglor, i.e., Minimal Teach-in or Normal Teach-in, a minimum of 18% and 78% blocking of the laser beam was required for recording a count. This implies that the minimum grain size that can be observed by the Wenglor is 210±3μm and 495±10μm for the two settings respectively, which is considerably coarser than previously assumed. Due to the non-uniform power distribution of the laser sensor intensity, at the detection limit of 210 μm, only grains passing through the centre of the beam will be counted.
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Authors
Leonardo Duarte-Campos, Kathelijne M. Wijnberg, Loreto Oyarte-Gálvez, Suzanne J.M.H. Hulscher,