Checking And Adjusting The Off-Center Loading; Checking The Off-Center Loading Tolerances - Sartorius CP64 Service Manual

Checking Off-Center Loading
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Checking and Adjusting the Off-Center Loading Error
Larger errors in the off-center loading error affect the repeatability of the
weighing system!
The OIML Guideline R76-1 describes the tests for off-center loading tolerances for
square, round and even triangular weighing pans. Therefore, the test weight should
be placed on every 1/4 of the weighing pan surface.
The positions for placing test weights in triangular weighing pans are indicated in
the fi gures to the left.
Please refer to the sketches to the left to establish the testing points for checking
the off-center loading tolerances.
The markings should help you place the test weights in their proper positions.

Checking the Off-Center Loading Tolerances

Note: The data for the test weight and the tolerance are listed in the „Adjustment
Datasheet (see Page 42-43).
CP Balances/Scales with Draft Shields and Triangular Weighing Pans
Models: CP423S, CP323S, CP323P, CP153, GC2502
- Place the test weight on position 1 on the weighing pan and zero the balance/
scale by pressing the t key.
- In the order given, place the test weight in the position 2, 3, 4 and 5 as indicated
and write down the readout at stability, including the plus/minus signs.
- If the off-center loading error is too large, adjust the balance so that the off-
center loading error is within the tolerances specified.
CP Balances/Scales with Square Weighing Pan
Models: CP4202S, CP3202S, CP3202P, CP2202S, CP5202, GP3202
- Compare the off-center loading errors with the tolerances listed in the („Adjust-
ment Datasheet" see Page 42-43).
- If the off-center loading error is too large, adjust the balance so that the off-
center loading error is within the tolerances specified.