UC4™ Total Control™ Automatic Boom Height Technical ... - Norac

4.1 INSTALLATION
For proper installation of the UC4 boom control system, please refer to the
UC4 Installation Manual for your model of sprayer.
4.2 SENSORS
Three sensors are provided with your UC4 boom control kit (with the
exception of certain kits). The sensors use an ultrasonic signal to measure the
distance to the ground, or the top of the crop. Three sensors are required to
provide good overall height management of the boom. Two sensors are
mounted on the outer sections of each wing (Figure 2). These sensors
maintain each wing at the set target height independently.
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Figure 2 – UC4 Sensor and Mounting Bracket
The third sensor (if applicable) is mounted on the main (center) boom
section. The main boom sensor is useful for setting your initial spray height
when you begin spraying in a field.
It is true that the main boom height will not change much, in consistent soil
conditions, since both ends of the main boom follow the height of the power
unit. However, it is extremely difficult to judge the boom’s actual height
accurately from the cab. It is also very difficult for the operator to see the
main section nozzles. It is common for operators to be in error from 8 to 12
inches or more (How often does the operator check nozzle height with a
tape measure?). The UC4 control panel will give you an actual height
reading in the cab, and allow active control to the desired height.