An automatic sequential rainfall sampler

Abstract
An automatic sequential rainfall sampler has been developed which is capable of operating unattended for periods of days. The pulse produced by a raindrop impacting with a loudspeaker actuates the collection and recording systems. The apparatus records the duration of rainfall and collects samples at a predetermined rate. The samples may be left for a period of weeks before collection. The equipment is battery powered and easily portable. Sample sizes vary between 1 and 20 ml but may be increased to any desired volume.
Keywords

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