Variable Rate Piston Metering Pump for precision agriculture applications
The Variable Rate Piston Metering Pump is a positive displacementmetering pump capable of adjusting its output during operation to allow for continuous and dynamic variable rate application rate adjustments of liquid fertilizer during application. This new pump design uses a proprietary, patent-pending, dynamic reverse rotating dual eccentric to adjust the pumps output and, therefore, application rate. This capability allows the operator to make infinite application rate changes within a 1 to 5 range while the pump is in operation in the field. Rate changes are made directly from an electronic controller located in the tractor's cab. The mechanically based Variable Rate Piston Metering Pump is ground-driven with electronic support and requires no additional hydraulics, radar, bypass valves, flow meters, or alternative drive systems from standard positive displacement metering pump systems. This system may be linked to independent compatible electronic platforms using GPS and field prescription maps for site-specific application of liquid fertilizer, i.e. precision agriculture.

CDS - John Blue Co., Huntsville, Alabama, USA; 800-253-2583, www.cds-johnblue.com