Rice Lake Combination System - Precision Loads PL9710 Indicator - Manual (Page 9)

PL9710 Installation Manual - Calibration 5
3.0 Calibration
The calibration process allows you to fine tune your weighing system to provide the greatest degree of accuracy.
The accuracy of the
PL9710
, however, depends on the accuracy of the information you provide. You will be
required to have the weights of your truck and trailer when they are empty (tare weight) and when they are loaded
(gross weight).
Find a certified platform scale of known accuracy, such as a state operated weight-enforcement highway scale or a
mill scale. Have your empty log truck and trailer weighed with the trailer down. Get the truck weight (including the
steer axle and the drive axles) and the trailer weight. For future reference, record the weights here:
Truck (steer and drive axles):
_____________ lb or kg
Trailer (trailer axles): _____________ lb or kg
Total weight: _____________ lb or kg
Not all platform scales read the same, so try to use the same scales whenever you need to recalibrate the indicator
or check the calibration. Use the same scales for recording loaded weights that you used for getting your empty
weights.
3.1 Entering the Empty Weight
Before entering the empty weight into the indicator,
make sure the indicator display is set to GROSS. See
“Setting Net, Gross or Test Mode” on page 4. Also,
make sure the truck and trailer are empty and the trailer
is on the ground with the indicator cable connected.
1. Press the
Menu
key for 5 seconds until the
information display shows Setup Menu.
After releasing the
Menu
key, the information
display will show Setup selection and the weight
display will show Setup.
2. To enter the truck empty weight, press the or
Up
or
Down
key until the information display shows
Calibrate Channel 1.
3. Press the
Empty
softkey.
The information display will briefly (for about 4
seconds) show EMPTY - Channel 1. It will then
show Set Ch-1 Empty Weight.
The last number of the weight display will be
flashing, telling you that number is ready to be
changed.
4. To change the number’s value, press the
Up
or
Down
key.
5. To select a different number, press the
left arrow
or
right arrow
softkey.
6. When the number on the weight display matches
your truck (channel 1) empty weight, press the
Enter
softkey to store the weight in the indicator’s
memory.
The information display will briefly show Store
Ch-1 empty weight and then return to Setup
selection and the weight display will show Setup.
7. To enter the trailer empty weight, press the
Up
or
Down
key until the information display shows
Calibrate Channel 2.
8. Press the
Empty
softkey. The information display
will briefly show EMPTY - Channel 2. It will
then show Set Ch-1 Empty Weight.
9. The last number of the weight display will be
flashing, telling you that number is ready to be
changed. To change the number’s value, press the
Up
or
Down
key. To select a different number,
press the
left arrow
or
right arrow
softkey.
10. When the number on the weight display matches
your trailer (channel 2) empty weight, press the
Enter
softkey to store the weight in the indicator’s
memory. The information display will show then
return to Setup selection.
At any time, you can exit the calibration process by
pressing the
Cancel
softkey. The information display
will briefly show CANCEL - Setup.
3.2 Entering the Loaded Weight
The following steps can be completed only after having
your loaded truck weighed at a certified and accurate
platform scale. The accuracy of your indicator will
completely depend upon the accuracy of the platform
scale. For best results, use the same scales you used for
getting your empty weights.
The steps involved are similar to those used for
entering the empty weights.
1. Press the
Menu
key for 5 seconds until the
information display shows Setup Menu.
After releasing the
Menu
key, the information
display will show and the weight display will
show Setup selection.
2. To enter the truck’s loaded weight, press the
Up
or
Down
key until the information display shows
Calibrate Channel 1.
3. Press the
Full
softkey. The information display
will briefly show Load Channel 1 before
Entering Full weight. It will then show Enter
Ch-1 Full Weight.