This rain measuring instrumentation was a component of the new SCADA System at the DesMoines & Mississippi Levee District (Alexandria, MO). The electronics were installed at the Levee District’s new Pumping Station, where accumulated water within a network of ditches is pumped over the levee and into the Mississippi River. The station has a pumping capacity in excess of 100,000 GPM.
The RG600 provides a contact closure for every 1/100 inch of rainfall; and the contact output was interfaced to one of the EtherMeter’s pulse input channels.
The EtherMeter was configured to measure total accumulated rainfall (1/100 inch increments), as well as the realtime rainfall rate (inches/hour). The data was transmitted to a master RTU using Modbus/RTU over RS-485.
Additional Modbus Devices Within the Pumping Station:
- Two Toshiba VFD’s (Variable Frequency Drives)
- Two Keller America “AccuLevel” submersible pressure transducers for measuring water levels within the ditch and the river.
- Two Shark-100 energy meters.
- Three ADAM-4000 multichannel analog and digital I/O modules.