The recorded data provided by the impact logger, based on an OEM version of a Tinytag count logger, provides information about sediment transport, erosion and deposition in rivers and streams.
Research Equipment Developer Ian Benson has used Gemini data
logging technology to create custom-made impact data loggers for
scientists studying sediment movement in rivers. Based on a
Re-Ed OEM count input data logger, built into a stainless steel
enclosure, the technology is used to study waterborne sediment
transport, providing information on the basic physics of how
turbulence influences sediments, including geomorphology, studies
of erosion and deposition.
The loggers are used by colleges and other organisations in the
UK, Chile, Switzerland and other countries for counting the impacts
of sediment particles in rivers, with the projects in Chile and
Switzerland studying upland streams fed by glacial meltwater. The
loggers allow the recording of high frequencies of impacts over
long sampling periods.
Recorded data is used in research and reports, which may include
management advice to authorities such as National Parks or the
Ian has found the Tinytags to be rugged and reliable. He
comments, "The shape and specification of the units and the ongoing
continuity of the design is crucial for doing science where there
is limited space in the enclosure and the physical behaviour (mass,
stiffness etc.) of the overall assembly must be consistent in
ongoing studies that run over a number of years. I have also found
Gemini Data Loggers' technical support to be excellent."
The image shows the TGPR-1200 Re-Ed count
logger built into the stainless enclosure.