micro-trak FLOWTRAK II, Справочное руководство, Страница: 22 / 44

22
PREPARATION:
In order to achieve accurate measurements, each step in this
fine tuning procedure should be performed as precisely as
possible.
1. Once the system is fully installed and calibrated, se lect a
straight tract of ground that is similar to your ac tu al field
conditions and as level as pos si ble.
2. Measure a distance of 1000 feet (500 meters).
Clear ly mark the beginning and end points with flags or
some thing highly visible to the operator.
NOTE: Us ing a course with a different ground sur face, such
as a hard surface road, will re sult in dif fer ent read ings than
actual field con di tions.
P
rocedure
1. With the console turned ON, use the Run/Hold button
to select HOLD mode. The HOLD icon will be displayed.
Turn the rotary dial to the “DISTANCE” position. Be sure
the display shows 0. If not, reset the distance counter by
pressing and holding “RESET” until the display returns to
0 (approximately one second). The word CLEAr will be
displayed when reset is pressed.
2. You are now ready to drive the measured course. Pick
a location on the vehicle to use as a marker for starting
and stopping the distance counting function (door
handle, mirror, step, etc.). You should begin driving the
course well ahead of the starting flag and drive past the
ending flag, using the Run/Hold button to start and stop
the counting function. It is not recommended to start
from a dead stop at the starting flag and stop at the
ending flag.
3. Use the Run/Hold button to select RUN mode when
the marker on the vehicle passes the starting flag to
activate the distance counting function. The console
display numbers will increase, adding to the distance
total as you drive. Drive the pre-measured course and
use the Run/Hold button to select HOLD mode, when
the marker on the vehicle passes the ending flag, to
stop the distance counting function. The console display
should read “HOLD”.
See Illustration to the right.
Stop
the vehicle in a level and safe area and continue with this
procedure.
4. With the rotary dial still at DISTANCE (SPEED CAL), press
and hold the “CAL” key for one second. Once the
con sole is in “CAL,” CAL and the speed calibration value
will be displayed. Momentarily press CAL and the word
CAL will begin to flash and the distance traveled will be
displayed.
See Illustration.
5. When the display shows distance (“CAL” is flashing), ver-
i fy wheth er the number displayed is the ex act dis tance
you drove (with in +/- 1 - 2 %). If not, press the “+” or “-”
key to ad just the fig ure to match the dis tance you ac tu-
al ly drove. If the display reads too high, use the “-” key to
lower the dis played value. If the display reads too low,
use the “+” key to raise the displayed value.
6. When the number shown on the display match es (as
close ly as possible) the ac tu al dis tance driv en, you have
ar rived at the cor rect cal i bra tion val ue. If you can not
adjust the displayed distance to exactly match the actual
dis tance driven, adjust the figure as close as possible
to the actual distance. You may check the calibration
number by momentarily pressing CAL. The word CAL
and the SPEED CAL number will appear. Exit “CAL” by
pressing “CAL” for one second.
NOTE: The speed sen sor is now calibrated. To verify proper
calibration, repeat the procedure a sec ond time. Write
down the new speed calibration number and keep it in a
safe place. If the cal i bra tion values are ever accidentally
changed, you can simply re-en ter this num ber.
WIDTH
CAL
FLOW
CAL
MIN
FLOW
TARGET
RATE
SPEED
CAL
TEST
SPEED
VOLUME /
MINUTE
DISTANCE
AREA /
HOUR
VOLUME
(1) (2) (3)
RATE
SPEED
AREA
(1) (2) (3)
TANK
CAL
RESET
CAL HOLD
1
II
TANK
ALARM
TANK
VOL
RUN
HOLD
Calibration
(cont)
Fine Tuning Speed/Distance Calibration Val ue