TeeJet LH 1200 - Manual (Page 19)

LH 1200 O PERATORS & F ITTING MANUAL E NCODING THE LH 1200
LH A GRO 19
Procedure:
If the monitor has counted too many litres, a negative correction must be made.
The following example assumes that the monitor has counter 3% too much.
The correction is made as follows:
Press
When the keys are pressed in this order, the flow figure will be altered by –3%.
NOTE!
We recommend calibrating the flow meter several times during a
season.
This control is always available, as you can check that the monitor has
counted the exact contents of the sprayer tank, each time the tank has
been emptied.
Clean and check the paddle wheel and shaft for wear at regular
intervals.
VOLUME MONITORING CALIBRATION FOR SEED AND FERTILISER
The LH 1200 must be encoded with some special values for volume monitoring on
seed drills and fertiliser distributors. The method of measurement is, in principal,
the same as for flow metering on crop sprayers. The calibration value is the
volume per pulse from the sensor.
Thus if you let the LH 1200 count the number of pulses during the normal
drill/distributor calibration and thereafter divide the amount released (during
calibration) by the number of pulses, a new calibration figure for the implement can
be found.
NOTE!
Please note that any changes/adjustments to the drill/distributor require
a new calibration.