Rice Lake RoughDeck QC-X, Руководство по установке

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Adjustments and Calibration
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3.0 Adjustments and Calibration
3.1 Mechanical Adjustments
To accommodate minor unevenness, adjust the scale height up or down a fraction of an inch using the scale feet. Lift the scale
corner slightly and adjust the feet by hand until all feet are contacting the corner pads equally.
After completing height adjustments, recheck the levelness of the deck with a spirit level. The deck must be level within 1/4".
CAUTION
When adjusting the scale feet, use care to prevent the scale foot from bottoming out against the underside of
the load cell. The foot stem can also be damaged by bending or stripping threads, if extended beyond the
maximum height adjustment.
3.2 Corner Correction
To calibrate the scale, all four load cells must be adjusted so their output signals are equal. Adjust the signals using the
potentiometers at the junction box—a process known as trimming.
1. Remove the junction box cover and identify the load cell terminals corresponding to each corner (labeled CELL 1,
CELL 2, CELL 3, and CELL 4). See Figure 2-3 on page 4 .
2. Connect the indicator and calibrate using a test weight. The recommended test weight for all RoughDeck models is
25% of scale capacity.
Example – 500 lb for 2K-lb models.
3. Ensure there is no weight on the scale and zero the indicator.
4. Turn each of the four potentiometers clockwise to increase the reading until there is a clicking sound. This ensures the
maximum signal from each load cell.
5. With all potentiometers at full signal, place the test weight on one corner and record the indicated weight.
6. Repeat the process for each of the other three corners.
Figure 3-1. Trim Potentiometers.
7. Use the corner with the smallest output as a reference. Place the test weight on one of the other three corners and
adjust that cell's potentiometer to match the output of the reference cell.
8. Repeat this procedure with the other two high output corners.
9. Adjustments are interactive, so adjusting the three higher output corners may affect the reference cell output. Re-zero
the indicator and repeat the test until all corners are within ± 1% of the test weight used.
CELL 1
CELL 4
CELL 2
CELL 3 +EX
–EX
+SI
–SI
100 K
+SE
–SE
+EX
+EX
+EX
+EX
–EX
–EX
–EX
–EX
+SI
+SI
+SI
+SI
–SI
–SI
–SI
–SI
SHD
SHD
SHD
SHD
23126
Rev
.
A
SHD
JU1
JU2
JU3
JU4
100 K
100 K
100 K
Potentiometers
Potentiometers