The Eijkelkamp Saltiphone measures wind erosion. Using an acoustic measuring principle, so dusted grains are counted and the digital output signal is recorded by a datalogger. Used to monitor wind erosion that can degrade or strengthen soil.
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Particles hitting the microphone produce high frequency noise, which can be distinguished from other noises caused by wind and rain. Frequencies of about 8 KHz are amplified and used to determine saltation.