Rice Lake SURVIVOR PT Series - Manual (Page 26)

22 Survivor PT - Pit Type Truck Scale
6.4 Calibration with Test Weights
The calibration procedure can only be done after all trimming as described above has been completed. A qualified
scale technician with a test weight truck and the expertise to access the scale indicator’s Setup or Calibration mode
must perform the calibration procedure.
Figure 6-8. Calibration with Test Weights.
Equipment Required
Truck scales are routinely calibrated using 25% of the capacity weight of the scale. Certified Class F test weights
equaling at least 12.5% of the scale’s capacity will be required for calibrating a commercial legal-for-trade truck
scale. In addition, some type of weight for a substitution test of an additional 12.5% of the capacity will be
required. This can be the test-weight truck, bags of sand, or any convenient items easy to load onto the scale. This
total calibration weight of 25% of scale capacity (12.5% test weights, 12.5% substitution weight) is required by
weights and measures officials for commercial truck scales in most states. Check with your local weights and
measures officials for the requirements in your jurisdiction.
Industrial scales not used for legal-for-trade transactions do not require certified test weights. Weight equal to 25%
of scale capacity is recommended for calibrating such scales.
See Handbook 44 for detailed calibration requirements and procedures.
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