Weighing; Overview Of Calibration, Adjustment; And Linearization - Sartorius Cubis MCA Series Operating Instructions Manual

Operation
76 Operating Instructions Cubis
8.7

Weighing

NOTICE
Chemicals may damage the device or accessories!
Chemicals can attack the device or the connected accessories internally
and externally. This may damage the device and accessories.
Use appropriate containers when weighing chemicals.
t
Procedure
Start a task with weighing function.
t
Zero the device. In order to do so, press the [Zero] button.
t
If below-balance weighing is being carried out: Suspend the sample
t
on the hook for below-balance weighing, e.g. with a wire.
If a container is being used for the sample:
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Place the container on the weighing pan.
t
Tare the device. In order to do so, press the [Tare] button.
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Place the sample in the container or fill the container.
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If no container is used for the sample and no below-balance weighing
t
is being carried out: Place the sample on the weighing pan.
Once the weight value is displayed in black and the weighing unit
t
is displayed: Read off the measured value.
8.8

Overview of Calibration, Adjustment,

and Linearization
During calibration, a calibration weight is used to determine how much the
displayed value deviates from the actual value. This deviation is compared
against a preset target value. The subsequent adjustment eliminates this
deviation. During linearization, the deviation of the values from the ideal
characteristic curve is corrected.
Calibration and adjustment must be performed regularly:
− Daily, every time the device is switched on
− After every leveling
− After changing the ambient conditions (temperature, humidity,
or air pressure)
− After setting the device up at a new installation site
Calibration and adjustment may be performed in different ways:
− Adjusting with the isoCAL function
− Internal or external calibration or adjustment
Only internal adjustment | calibration is possible for all conformity-assessed
devices in legal metrology.
MCA
®