| 摘要 |
An impact detector such as for use with a grain loss monitor of a harvesting machine, is provided and which comprises a damped detector plate member (1) and a transducer (13) associated with a surface (10) of said detector plate member (1). This detector plate member (1) is provided with signal damping means (3, 4, 5) around its periphery only whereby a substantial area of the detector plate member (1) is delimited which is void of any signal damping means.
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