Metrologic Instruments StratosS MS2220 - Manual (Page 55)

49
S CALE O PERATION
C ALIBRATION V ERIFICATION
U.S. Pounds (lbs.)
The following tests verify if the scale's Calibration is accurate. For Kilograms see instructions starting on page 50.
The following tests are based on a 2-digit accuracy setting for pounds.
ƒ Increasing Load Test
ƒ Shift Test
ƒ Decreasing Load Test
ƒ Return to Zero Test
Increasing Load Test
1. Ensure there is no load on the scale platter and verify the remote display reads 0.00 lbs.
2. Place a 5.00 lb. weight on the center of the scale platter and verify the display reads 5.00 lbs.
3. Place an additional 5.00 lb. weight on the center of the scale platter and verify the remote display reads between
9.99 and 10.01 lbs.
4. Place an additional 10.00 lb. weight on the center of the scale platter and verify the remote display reads between
19.99 and 20.01 lbs.
5. Place an additional 10.00 lb. weight on the center of the scale platter and verify the remote display reads between
29.99 and 30.01 lbs.
6. Remove all the weight from the scale platter and verify the display reads 0.00 lbs.
Shift Test
1. Ensure there is no load on the scale platter and verify the remote display reads 0.00 lbs.
2. Place a 15.00 lb. weight on the scale platter in the center of zone A (see diagram)
and verify the remote display reads between 14.99 and 15.01 lbs.
3. Remove the 15.00 lb. weight and verify the display reads 0.00 lbs.
4. Repeat steps 2 and 3 for each of the remaining zones (B, C, and D).
5. Verify that the remote display reads 0.00 lbs. when all weight has been removed.
Decreasing Load Test
1. Ensure there is no load on the scale platter and verify the remote display reads 0.00 lbs.
2. Place a 30.00 lb. load on the center of the scale platter (use two 10.00 lb. weights and two 5.00 lb. weights).
Verify the remote display reads between 29.99 and 30.01 lbs.
3. Remove a 10.00 lb. weight from the platter and center remaining weight. Verify that the remote display reads between
19.99 and 20.01 lbs.
4. Remove another 15.00 lbs. from the platter, center the remaining weight and verify the scale reads 5.00 lbs.
5. Remove all the weight from the platter and verify the scale has returned to 0.00 lbs.
Return to Zero Test
1. Ensure there is no load on the scale platter and verify the remote display reads 0.00 lbs.
Figure 54. Shift Test Zones