TeeJet ARC-6000 - Manual (Page 40)

98-05017
Rev.- 1
B-2
ARC 6000
CE & S
TANDARD
V
ERSION
B.0. INTRODUCTION
Congratulations and welcome to the latest in the world of precision chemical application using the highest state of the art
application control system available. MIDWEST TECHNOLOGIES has drawn upon many years of experience in
electronically controlled chemical application to design and build a system which you will be satisfied to use and proud
to own.
%Rate
DISPLAY SELECTOR
Speed
Field Area Impl.Width
Distance
Test
Speed
Prime
Total Applied
Application Rate
OFF SET- UP DEC.
ON OPERATE INC.
Scan
Total Area
Product Vol.
ARC-6000
Automatic
Rate Controller
MID-TECH
®
MIDWEST TECHNOLOGIES, INC. 1 2 3 4 5 6 7 8 9
BOOMS
.
-Ac
Flow
RATE
Gal./
MIDWEST TECHNOLOGIES systems are constantly improving. To do this we rely on the experiences of our users as
well as ourselves. Please call or send us a letter to let us know what you like or don’t like about the system. We
appreciate your comments, and THANK YOU for purchasing a MIDWEST TECHNOLOGIES Application Rate
Control (ARC).
B.1. HOW THE ARC CONTROLS APPLICATION RATE
ARC is designed as a controller for either a liquid or granular applicator. In fact, there are two independent programs
installed in the ARC console, one for liquid and one for granular. The operator can select either program with a simple
switch activation. Calibration constants that have been set in the granular program will stay in memory, even if the
corresponding constants are changed in the liquid program. This allows a single console to be used on a spreader, then
removed and used on a sprayer, without requiring complete reprogramming.
The ARC system senses ground speed, active boom width, and material flow rate. When a change in ground speed or
boom width is detected, the ARC system changes material flow rate to maintain a constant, pre-selected application rate.
For example, an increase in ground speed results in a proportional increase in flow rate. A decrease in ground speed
results in a proportional decrease in flow rate. Comparisons of flow rate, active boom width, and ground speed are
made approximately four times each second and corrections are made to the flow rate as soon as an imbalance is seen.
High speed microprocessors and high resolution sensors are used in the ARC system which allows it to control the
carrier application rate precisely .