TeeJet LH 4000 - Manual (Page 18)

LH 4000 O PERATORS MANUAL
18 LH A GRO
UNIFORM PRESSURE
Encode whether the controls of the sprayer are equipped with uniform-pressure
valves (balance return-valves), or not.
ON = Yes OFF = No.
If "ON" remember to adjust your valves.
SPEED SENSOR (WHEEL TRACTOR, WHEEL SPRAYER)
You can chose between two different located speed sensors:
WHEEL TRACTOR
Sensor fitted to the tractor. Either externally, or an integrated (gearbox) sensor.
(May apply e.g. if machine is self-propelled type).
WHEEL SPRAYER
Sensor located on the sprayer. (e.g. trailed sprayers).
Calibration of speed sensor. Sensors must be calibrated individually!
SPEED SENSOR CALIBRATION
Speed sensor calibration is extremely important! We recommend that you check
the sensor calibration during the season. (This will ensure of compensation for
tyre-wear.)
However, the design of the LH 4000 makes calibration easy. You can calibrate
using two methods; Automatic or Manual.
AUTOMATIC SPEED SENSOR CALIBRATION
1. Carefully, measure and mark a distance of 100
metres. (Not on tarmac, but field-condition soil
surface)
2. Drive to "start" position of the 100-m distance,
and press the "CALIB.CALC" key. The screen
to the left will appear:
3. Drive the 100-metre distance. Stop exactly at the
100-m. mark.
4. A new function-key will appear; "CALC.
WHEEL". Press this key, and the computer has
automatically calculated and entered the
calibration figure!
Should the flashing: "CALC. WHEEL" however
not appear, the computer has received
insufficient pulses from the sensor enabling it to
"auto-calibrate". You must calibrate using one of
the two "manual" alternatives: