Where should the REBEL™ Sentry datalogger(s) be placed during the time data from the REBEL™ Echo sensors is being measured to ensure the datalogger is protected from the outdoor elements and against damage?

This heavily depends on the job site environment. It is usually acceptable to place the REBEL™ Sentry Datalogger on formwork by securing a wire tie through one of the loops on the case. Cones, cylinder molds, and buckets are also used when no formwork is present. It is preferred to place the REBEL Sentry Datalogger at least several inches off the ground and to avoid completely covering it in metal so that the LTE signal is not impacted.