KERN DS Betriebsanleitung Seite 86

7.6 Connection of peripheral devices
Before connecting or disconnecting of additional devices (printer, PC) to the data
interface, always disconnect the balance from the power supply.
With your balance, only use accessories and peripheral devices by KERN, as they
are ideally tuned to your balance.
7.7 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. 1). During this
warming up time the balance must be connected to the power supply (mains,
rechargeable accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
7.8 Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
each display unit with connected weighing plate 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 weighing system 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 display unit periodically in weighing operation.
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Arrange the required adjustment weight, see chap. 1.
Carry out adjustment as near as possible to the highest load of the balance
(recommended adjustment weight see chap. 1). Weights of different nominal
values or tolerance classes may be used for adjustment but are not optimal
for technical measuring. The accuracy of the adjustment weight must
correspond approximately to or, if possible, be better than, the readability [d]
of the balance. Info about test weights can be found on the Internet at:
http://www.kern-sohn.com
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Observe stable environmental conditions. A warm up time (see chapter 1) is
required for stabilization.
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Ensure that there are no objects on the weighing pan.
18 TDS-BA-def-2210