8
5.3
Mains connection
Before connecting the mains power cord check if the printed voltage value is the same as the
local supply voltage.
Only use the original supplied mains power cord. Otherwise there is a risk that the Scale be
impaired.
5.4
Connection of peripheral devices
The balance may send data to a computer or a printer through RS232C port.
When cooperating with the balance, a computer should be equipped with a program which
enables processing data from the balance.
Before connecting or disconnecting of additional devices (printer, PC) to the data interface,
always disconnect the balance from the power supply.
5.5
Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have reached
the operating temperature (warming up time 1 hour). During this warming up time the balance
must be connected to the power supply
The accuracy of the balance depends on the local acceleration of gravity.
Please read the information carefully in chap. “Adjustment”.
5.6
Adjustment
As the acceleration value due to gravity is not the same at every location on earth, each balance
must be coordinated - in compliance with the underlying physical weighing principle - to the
existing acceleration due to gravity at its place of location (only if the balance has not already
been adjusted to the location in the factory). This adjustment process must be carried out for
the first commissioning, after each change of location as well as in case of fluctuating
environment temperature. To receive accurate measuring values it is also recommended to
adjust the balance periodically in weighing operation.
5.7
Calibration
5.7.1
Internal calibration:
When the balance display is “0” then press the “CAL” key.
The balance turns into the automatic internal calibration status and displays “CAL”, now the
internal weight loading and unloading device for automatic calibration will start their work.
After 30 seconds the display “0”, that means the calibration is finished. In the normal use, the
internal calibration should be used to calibrate the balance.
When there was no calibration within the last 3 hours the scale will calibrate itself.
5.7.2
Internal calibration:
External Calibration:
First you should get ready the standard weight for external calibration in the required OIML-
Tolerance (E2 for example). When the balance display is “0” press and hold the “CAL” key until
the display changes from "CAL-INT" to "CAL-E".
