TeeJet TASC-6600 - Manual (Page 55)

B-3
TASC-6000, 6300, 6600 98-05010
Rev. - 1
B.1.2. HOW A TASC-6300 AND 6600 CONTROLS CHEMICAL APPLICATION RATE
The theory behind controlled, chemical injection spraying is simple. Each chemical is stored in a separate container until
it is actually applied. Chemical is injected into the carrier as needed using a precision metering pump. Injected chemical
mixes rapidly and thoroughly with the carrier before it leaves the sprayer through the nozzles.
A TASC-6300 or 6600 automatically maintains the desired chemical application rate by sensing changes in ground
speed or active boom width and adjusting the rate of chemical injection accordingly. For example, if the ground speed of
the sprayer increases or decreases, the injection pump speed increases or decreases accordingly to keep the amount of
chemical applied per unit area at a constant value. Likewise, as more boom sections are switched on or off line, the
injection pump speeds up or slows down accordingly, to assure the proper application rate. TASC makes these compari-
sons and adjustments approximately four times each second. The speed and accuracy of TASC allows it to precisely
control the application rate of each chemical being injected.
TASC CONTROL SYSTEM FLOW SCHEMATIC
TASC
Control Console
Controlled Output Functions
Liquid Control Systems Dry Control Systems Liquid Injection Pumps Granular Applicators
Chemical Products
Flow & Application Rate
(up to 6 separate products)
Feed Back Control Data
Input Functions
Control Valve
(Liquid or Hydraulic)
Flow Sensor
(Liquid Flowmeter)
(Pump RPM Sensor)
Control Valve
(Hydraulic)
Flow Sensor
( RPM Sensor)
Metering Pump
Flow Sensor
(Shaft RPM Sensor)
Metering Device
(Star Wheel Applicator)
Flow Sensor
(Shaft RPM Sensor)
Carrier Product
Flow & Application Rate
Record Keeping
All Pertinent Sprayer Data
Data Printer
Hard Copy only
Data Logger/Printer
Hard Copy
RAM Memory
P.C. Compatible
Operator Inputs
Set-Up & Active Control Data
Vehicle Ground Speed
Control Data
Active Boom Width
Control Data