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Load Cell Recalibration
This unit was properly calibrated at the factory to match the load cells that were supplied with it. If you are going to
recalibrate, note the following.
Recalibration cannot be done until the Recalibration flag is turned ON. The proper sequence of keystrokes is given below.
BE SURE the load cell plug is plugged into the side of the controller.
BE SURE the weigh bin is hanging from the load cells freely.
BE SURE the air line to the dump valve is connected, as it would be during normal operation. (A disconnected air line adds
weight.) Air pressure to the line is not necessary.
BE SURE there is nothing touching the weigh bin or air line.
BE SURE the bin is EMPTY when ZEROING the load cells,
ZERO WT. must be done before FULL WT. Since changes in ZERO WT will also shift the FULL WT scale by the same
amount, it may not be necessary to go any farther than this.
When SETTING FULL WEIGHT, BE SURE you know the exact weight (in GRAMS) that you are adding to the bin. Place this
weight in the bin and then press the FULL WT. key. Five dashes (FUL-----) will be displayed.
Enter the EXACT weight in GRAMS that you have placed in the bin. The weight should be close to the designed full bin
weight; (400, 1000, 2000, 4000, 9000, or 18000). The example below uses 2000.
When done, there is no need to turn the Calibration Flag off. The next time power is turned off this flag will be reset to OFF.
Load Cell Recalibration - Keypad Sequence:
NOTE
– This example is specific to a WSB 200 series with a 2000 gram weigh bin – please check your model to select
correct FULL weight
Press
Display will say: (PASSWORD)
Press
Display will say: (P x)
Press
Display will say: (CAL OFF)
Press
Display will say: (CAL ON)
Press
Display will say: (P x)
Press
Display will say: (-- WAIT --)
Followed by: (P 0)
Place a 2000 (or 400, 1000, 4000 or 9000) Gram weight in the bin.
Press
Display will say: (-- WAIT --)
Followed by: (P 2000.0)
If YOUR weight is not exactly 2000 grams, then enter the ACTUAL weight that YOU use.
Press
Display will say: ( 2000.0)
Remove weights from Weigh Bin
Display will say: ( x.x)
Actual displayed weights may be plus or minus a few grams.
After FULL weight calibration, if the display says (BAD CELL), the weight you are using does not match the weight you
entered, the weigh bin is not free to move, OR the load cells are bad.