Holtgreven Truck Scale Resources - Manual (Page 35)

PT300 Users manual
Rev G, Feb 2011
Page 35 of 44
with the Lb/Kg button or decrease the number with the Zero button until the display shows “2 22 2”.
This is the number of load cells in the PT300. (Unless you have a 30K or 40K PT300DW,
which has 4 load cells, enter “4
4 4 4 ” in this case) If the number was changed the scale will save
and restart. If this happens go back to step 2. If the number isn’t changed the display will
show “LC 00
LC 00 LC 00 LC 00”.
5. Press PRINT / ACCUMULATE to read the zero load. For this step it doesn’t matter if there are
loading blocks on the scale or not.
6. The display will show “LC1-0
LC1-0 LC1-0 LC1-0”. Prepare load cell 1 using the loading block and the rubber pad
as per figure above. With no weight on the scale except the loading block fixture, press the
PRINT ACCUMULATE button.
7. The display will show “LC1-L
LC1-L LC1-L LC1-L”. Apply ¼ of the capacity of the scale to load cell 1 using the
same loading fixture. Once the load is applied press the PRINT ACCUMULATE button.
8. The display will show “LC2-0 LC2-0 LC2-0 LC2-0”. Prepare load cell 2 using the loading block and the rubber pad
as per figures 1 and 2 above. With no weight on the scale except the loading block fixture,
press the PRINT ACCUMULATE button.
9. The display will show “LC2-L
LC2-L LC2-L LC2-L”. Apply ¼ of the capacity of the scale to load cell 2 using the
same loading fixture. Once the load is applied press the PRINT ACCUMULATE button.
10. The display will show “SAvE
SAvE SAvE SAvE” and then return to normal weighing mode. The cornering has now
been internally compensated and saved. Perform corner calibration verification in normal
weighing mode. This concludes the corner calibration.
11. To access the Span calibration, simultaneously press the PRINT/ACCUMULATE and the
ZERO buttons. The scale shows “StEP StEP StEP StEP”. Press the PRINT/ACCUMULATE button. The scale
shows “000 000 000 000” with the far right number flashing. To go through all of the calibration parameters,
press PRINT/ ACCUMULATE with the display showing “000 000 000 000”. To skip the first 8 calibration
parameters and proceed to span calibration enter “001 001 001 001”.
Corner Calibration (Single load cell)
1. Position the scale, loading block and pad to apply weight on the corner requiring
adjustment.
2. Enter Cal mode.
3. Enter “
20 20 20 20x” at “StEP StEP StEP StEP” choice to adjust a single corner. The cell number to adjust is entered in
the code as ‘x’. (Example: Enter “202 202 202 202” to enter mode to adjust cell #2).
4. The display will appear to return to normal mode, except that now the ‘S1’ and ‘S2’
segments are blinking to indicate you are now in corner adjust mode for your selected
corner.
5. Apply ¼ of the scales capacity to the loading pad over the corner to be adjusted.
6. Press LOCAL/TOTAL to increase or ZERO to decrease the corner’s weight. (Each press
adjusts the display approximately 0.01%)
7. When the desired weight is showing on the display, press PRINT / ACCUMULATE to save
the results and return to normal weighing. Return to calibration verification section and
ensure all calibration parameters are met.