A locomotive control system includes an on-board controller responsive to a time signal received from a remote source for outputting a first polling signal at a time determined with reference to the time signal. The main-housing has a liquid inlet, a liquid outlet, an air inlet, and a micro-droplet outlet. The assembly in one or more embodiments operates as an intelligent node in an AMR network, and it interprets a received closure command as a closure condition. The array can be used for water quality monitoring, for example. Defining chunk pools for managing the chunks, wherein each chunk pool corresponds to chunks of a particular size and defining unit pools for managing units of the first size, wherein the chunk pool corresponding to the unit pool provides a chunk of the particular size to be separated into the units of the first size, and the data of the first size is stored in the units.