Shimadzu AP W Series, Инструкция по эксплуатации

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Maintenance Maintenance
About Weights
In order to establish and maintain balance performance, it is necessary to accurately align the balance
sensitivity with the weight in use, and to check that this has been done.
Uses weights for some of the calibrations and Periodic inspections that are performed in the location
where the balance is actually used. These weights must be prepared in advanced and carefully
managed.
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[Adjustment and Tests with External Weights] (P.47)
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[Periodic inspections (W-AD/ W/ X Series only)] (P.53)
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Types of Weight and Their Selection
There are many types of weights. Select the appropriate weights for the specifications of your balance
by referring to the following table.

Selecting Weight Classes
It is common for the various types of main weights to be classified into difference classes in
accordance with their level of accuracy. Class E2 weights are to be used with the AP Series.
Class E2 Weights Minimum Display: Less than 1mg, Resolution*: Approximately 1/1,000,000 or more,
Generic Name: Analytical Balance
* Resolution refers to (Minimum Display) ÷ (Weighing Capacity).

Selecting How Many Grams to Use for Weights
It is recommended that weights that are close to the weighing capacity of the balance are chosen
when selecting the weights to use for balance calibration. The recommended weights with regard to
the weighing capacity of the balance are listed below.
Balance Weighing Capacity Recommended Weights for Calibration
52g 50g
102g 100g
120g 100g
135g 100g
220g 200g
320g 300g
For information on the range of weights that can be used to calibrate balances (i.e. values that can be entered
as the weight value) see "Adjustment range with weights" in [Specifications].
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[12 Specifications] (P.161)
It is also possible to calibrate a balance with a weight that is not close to the weighing capacity of the
balance.
However, if you do this, when weighing in the range that exceeds the weight value that was used for
calibration, the performance may deteriorate proportionately (the instrumental error may become larger).
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JCSS Weight Calibrations
The weights must be correctly managed in order to ensure the correct management of the balance.
Shimadzu recommends that weights that have received JSCC calibrations are used to guarantee
correctly managed weights. It is also necessary to perform (update) JCSS Calibration periodically. Only
authorized offices are permitted to perform JCSS Calibrations, and Shimadzu is an authorized office.
Contact our sales offices, retail outlets or service agents for further details.
A detailed explanation is also provided on the Shimadzu website (https://www.shimadzu.com/an/
balance/index.html) and is available for access.