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Calibration and Adjustment
Purpose
Perform calibration to determine the difference between the value displayed and the actual
weight on the platform. Calibration does not entail making any changes within the weighing
equipment.
During adjustment, the difference between the measured value displayed and the true
weight of a sample is corrected, or is reduced to an allowable level within maximum
permissible error limits.
Configuration for Use in Legal Metrology
Configuration of the weighing instrument for use in legal metrology is set by a switch.
The switch is located on the back of the weighing platform and covered by a protective cap.
Using a verified scale in legal metrology in the EU:
The Type-Approval Certificate for verified scales is only valid for non-automatic weighing
instruments. For automatic operation with or without additional, integrated equipment,
please follow the applicable national regulations for the installation location.
Externally connected IS scales
Before use in legal metrology, the scale should be calibrated via the internal calibration
equipment at the installation location: see chapter “Configuring Weighing Platforms, section
“Internal Calibration/Adjustment."
3
The temperature range (°C) listed on the ID label should not be exceeded during operation.
For Servicing
External calibration for verified scales of accuracy class l:
– External calibration is blocked in legal metrology (switch cover is sealed)
– External calibration is only possible by removing the seal.
If the seal is broken, the validity of verification will become void and you must have your
scale re-verified.
Using a verified scale in legal metrology with internal calibration equipment:
t Before use in legal metrology, the “internal calibration" function should be carried out at the
installation location:
Opening the menu access switch
The menu access switch is located on the back of the indicator right next to the weighing
platform connection.
t Remove the cap.
t Slide the switch to the left (= “open" position, for use in legal metrology).
h
You can determine the position of the switch in the Setup menu under “Info:WP."
Operation
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