CAS CU series, Руководство пользователя

Страница: 114 / 127

115
A-6. Performance Checks
x
Performance checks should be conducted in a room where there are no sudden
temperature changes. Refer to the installation guidelines for the environmental factors
that assure optimal performance.
x
The following is a standard method used to determine whether the balance is working
properly.
x
The specific criterion should be set according to each user’s quality goal.
Repeatability
1 . Allow the balance to warm up sufficiently by
turning ON the power and leaving it at the
gramdisplay at least two hours before starting
the performance checks.
2
. Choose a weight that is near half the capacity
of the balance. Load and unload the weight five
successive times and record the following items:
Xi: Displayed value when the weight is loaded.
Yi: Displayed value when the weight is
unloaded.
3
. Use the formulas shown below to calculate the
values Rx and Ry.
4 . Balance repeatability is considered normal
when both Rx and Ry are within five counts.
* One count corresponds to one minimum
display unit of the balance model.