TeeJet 834-P Sprayer Control User Manual
Page 12
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834-P Sprayer Control
TECHNOLOGIES
98-70028-R0 12
S
HAFT
S
ENSOR
C
ALIBRATION
The shaft speed sensor needs to be calibrated in order to provide the proper speed reading.
The value for this step is the number of pulses generated by the shaft speed sensor in one
revolution. For example, if the shaft speed sensor is mounted to sense the teeth of a
sprocket, enter the number of teeth on that sprocket.
S
PRAY
T
IP
C
APACITY
Enter the combined capacity of all nozzles on the system. This should be measured in
Gallons Per Minute at 40 PSI. These capacities can be obtained from the nozzle
manufacturer’s catalog..
Use the
+
or
keys to adjust this value. Once the correct units have been selected,
press the key to advance to the next step.
Example: Two 8004 nozzles would have a combined capacity of .8 GPM at 40 PSI.
P
OUNDS
P
ER
R
OTATION
In order to apply liquid at a fixed proporation to the dry material being applied, the controller
must be able to associate the amount of dry material applied with each rotation of the shaft.
To determine this number, operate the dry spreader. Allow the shaft to turn several
revolutions and weight the material applied. Divide the total weight by the number of shaft
rotations to determine pounds per rotation (lbs/rot).
Auto-Calibration
This value can be determined by an automatic calibration sequence. To perform this
operation:
a) Push the
+
and
keys simultaneously. The display will show a blinking CAL.
b) Press the
+
key to start calibration.
c) Dispense exactly 100 lbs of material, then press
+
again to stop calibration. The
controller will automatically calculate the number of lbs/rot.
d) Press select key to accept value and conclude programming.
This concludes the programming of your 834-P for prewetting applications. The target
application rate in Gallons per Ton (GPT) can be set any time the master switch is off by
pressing the
+
or
keys.