Abstract
This paper presents the primary shock calibration system developed at Inmetro to obtain the shock sensitivity of accelerometers and acceleration measuring chains. The shock exciter employs a pneumatic driver and is based on the mechanical shock between two rigid bodies guided by air bearings. The system follows the ISO standard 16063-13. The shock acceleration is measured by laser interferometry. Details of the calibration system, including the shock machine, data acquisition and signals processing are presented and some measurement results are discussed by the authors.
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