NCR RealScan 7872 - Over-Capacity Test; Decreasing Load Test

NCR RealScan 7872 Installation/Owner Guide
08/04 497-0415291 Release F22 of 44
Over-Capacity Test
This test checks for the proper indication from the scale when too much weight is placed
on the top plate.
Note:
This test must immediately follow the increasing load test; do not remove any of
the weights prior to running this test.
Place additional weight on the center of the top plate as shown in the following chart.
Use the weight that corresponds to the RealScan 7872 weight feature. The display shows
a series of dashes to indicate an over-capacity condition.
Step Weight Feature Add Weight Remove Weight Display Result
1 13.995 kg 0.04 kg --.---
30.0 lb. 0.08 lb. --.---
2
13.995 kg 0.04 kg 13.995 ± 0.005 kg
30.0 lb. 0.08 lb. 30.0 ± 0.01 lb.
Note:
Do NOT remove any weight from the Top Plate.
Decreasing Load Test
This test checks the scaleís accuracy when incrementally removing weight from the top
plate. Use weights that correspond to the RealScan 7872 weight feature.
Note:
This test must immediately follow the over-capacity test; do not remove any of the
weights prior to running this test.
Step Weight Feature Add Weight Remove Weight Display Result
1 13.995 kg 3.995 kg 10.0 ± 0.005 kg
30.0 lb. 10.0 lb. 20.0 ± 0.01 lb.
2
13.995 kg 7.5 kg 2.5 ± 0.00 kg
30.0 lb. 15.0 lb. 5.0 ± 0.00 lb.
3
13.995 kg 0.1 kg 2.5 kg 0.1 ± 0.00 kg
30.0 lb. 0.2 lb. 5.0 lb. 0.2 ± 0.00 lb.
4
13.995 kg 0.1 kg 0.0 ± 0.00 kg
30.0 lb. 0.2 lb. 0.0 ± 0.00 lb.