TeeJet FOREST LOGGER - Manual (Page 8)

8
Drive a distance of 100 metres measured in advance. In the display number of pulses
from the sensor now appears. Check that the pulses exceed 100. If not no auto-calibration
will be made.
Stop at the 100 make and press again. The correct wheel circumference in cm
and mm (say 24.3) has now been set in the monitor.
If wheel circumference exceeds 100.0 cm (for instance at sensor mounted on wheel) a
wheel circumference up to 300.0 cm can be programmed. This requires another sensor
type.
(
LH No. 11-930-982).
Do as follows:
Mark out in the field and on the tyre. Drive till the wheel has made 10 revolutions. Mark
out in the field again. Measure the distance between the two marks. Divide the distance
by 10 (wheel revolutions). Divide the wheel circumference by the number of magnets
mounted.
ERROR LOCALISATION
If it is suspected that one of the sensors is not operating correctly the system can be
checked as follows:
Encode a wheel circumference of 222.2
Press the time function.
FOREST LOGGER will now show:
"h" when speed sensor is activated.
"r" when the metre counter is switched off. (If external sensor is used).
10-05-93/BL