An Opto 22-based SCADA system monitors and controls all water and reclaimed water for the City of Carlsbad. The key components for this system are SNAP-brand controllers, which communicate with each other and back to a central control center through a combination of radio, serial, and Ethernet links.
Specifically, the SCADA system regulates all water transport, monitors an independent water treatment plant, and controls the chemical dosing of ammonia and chlorine that cleans the water. In total, these activities incorporate more than 1000 I/O points distributed across the control center and numerous remote sites.
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