10
A-6. Performance Check Guide
x The following is a standard guideline used to determine whether the balance
is working properly. The specific criterion can be set according to each user’s
requirements.
x Conduct the performance check in a location without changes in room
temperature. Install the balance following the instruction of this manual.
x Leave the calibration weight in the weighing chamber before start
performance check so that the temperatures will be equalized.
x For placing and removing the weight, use a long pair of tweezers.
Do not put hand into the weighing chamber.
Repeatability
For CAUW-D series, perform steps 3 to 5 in both large and small ranges.
1 Leave the power on in mass display (backlight
of CAUW series illuminates if it is set to on) and let
stand for one hour (two hours for CAUW-D series).
2 Following chapter 11, set the stability and
response to the standard mode, set the stability detection
band to 1 count, and set zero tracking to OFF.
3 With a pair of tweezers, place a weight close to
the weighing capacity on the pan and take it off
six times. For each time record
Xi: the value displayed each time the weight is loaded
Yi: the value shown when the weight is removed.
Load and unload a weight close to the capacity 6 times
Loaded: X1, X2...Xi...X6
Removed: Y1, Y2...Yi...Y6
Rx = Xmax-Xmin
Ry = Ymax-Ymin
(Max is the maximum value. Min is the minimum value.)
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