CHAPTER 2
8 Hawkeye Nozzle Control Operation Manual
HAWKEYE™ FEATURES
OPERATION MODES
The Hawkeye control system can be configured in several different modes to fit the application.
TABLE 1. Operation Mode Features
• Standard - The Hawkeye system will control to a target flow rate and target pressure. This is the most common
sprayer setting.
• Variable Pressure (VP) - This mode will control to a target-flow rate and target nozzle duty cycle by varying the
pressure. Useful for scenarios where pressure is not a priority (i.e. fertilizer application).
• High Flow - This mode allows both a conventional nozzle and a Hawkeye nozzle to run simultaneously to
achieve higher flow rates.
• On/Off - The Hawkeye System will hold the nozzle valve 100% open during application or fully closed when not
applying. This mode can be used with air induction tips and stream bars.
• Bypass (Conventional) - The Hawkeye system will control to a target flow, but the nozzle control valve is
disabled. A secondary flow outlet must be made available at each tip.
• Flow Control - Conventional flow control spray systems use a flowmeter to monitor the flow through the flow
through the system and adjust a control valve to maintain target application rate. This allows the operator to
turn on and off sections and change vehicle speeds while maintaining the desired application rate.
PRESSURE NOZZLE CONTROL
The Hawkeye nozzle control system provides the same spray pattern and coverage as conventional spray systems.
Pressure based nozzle control allows the operator to maintain the same target pressure and operate over a larger
application speed or flow range while maintaining droplet size. This may help manage spray drift and allow the
equipment to operate in higher winds. Better droplet control also provides more accurate field application and
better rate control at lower target flow rates than the flowmeter can detect.
TURN COMPENSATION
Conventional application systems provide a uniform rate across the boom or implement width. This functionality
works well in large field areas with straight swaths to ensure even coverage during application.
Standard VP
High
Flow
On/Off Bypass
Flow Control
Yes Yes Yes Yes Yes
Pressure Control
Yes No Yes No No
Turn Compensation
Yes Yes Yes No No
Individual Nozzle
Control
Yes Yes No Yes No
Virtual Sections
Yes Yes No Yes No
Wheel Tracks
Yes Yes Yes No No
Direct Injection
Yes Yes Yes Yes Yes
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