8.2. The Precision Weight Test
The precision weight test consists of performing the weight test in Section 8.1 multiple times to determine the instruments repeatability. This is a more critical verification of the instrument’s performance.
Mean, Standard Deviation, and Relative Standard Deviation are calculated using the following formulas.
Mean = total of results divided by number of results.
Standard Deviation = | Σ( | x | - x)2 | |
n - 1 | ||||
| ||||
Relative Standard Deviation expressed as percentage = Standard Deviation divided by Mean, multiplied by 100
∙Perform the steps in the weight test a total of five (5) times.
After all five tests are complete, press [MENU] and select the
STORED DATA MENU.
PRESS [ENT] to select tests.
Arrow up or down to select the five weight tests and press [ANALYZE].
The mean of the results should be 37.500%,
∙If the results obtained from these tests are outside the specified range, call AZI Customer Service at
AZI Customer Service | Page 71 of 92 |
