Product data

38
Signum 3 Ex
Operation
Calibration and Adjustment
Purpose
Perform calibration to determine the
difference between the weight 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�
§ Before use in legal metrology, the
scale should be adjusted via the
internal adjustment equipment at the
installation location: see the “Internal
Adjustment" section in this chapter�
$ The temperature range (°C) listed on
the ID label should not be exceeded
during operation�
For Servicing:
External Adjustment for Verified
Scales of Accuracy Class K and l
– External adjustment is blocked in legal
metrology (switch cover is sealed)
– External adjustment 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 Adjustment
Equipment:
§ Before use in legal metrology, the
“internal adjustment" function should
be carried out at the installation
location�
Characteristics
Which of the following features are
available depends on the connected
weighing platform� These features are
configured in the Setup menu:
– External calibration/adjustment blocked
in verified weighing instruments
– External calibration/adjustment with
the default weight value or standard
weight (not available on verified
instruments):
setup
wp-1
1.9.: Calibration and Adjustment
– Specify the weight for external
calibration/adjustment:
setup
wp-1
1.18.: (enter adjustment weight)
– Block the J key to prevent use of the
functions described above:
setup
wp-1
1.9.: (Block key 1�9�10)
– Calibrate first; then adjust automatically
or manually (not for verified weighing
instruments):
setup
wp-1
1.10.: Calibration/adjustment sequence
– Block external or enable calibration/
adjustment:
setup
wp-1
1.16.: (External adjustment)
Calibration Switch
Verification access switch
Calibration
switch
SIWX*DCP
SIWX*DCS
SIWX*BBP
SIWX*BBS
§ Switch on the left for use in legal
metrology
Operation
SIW*DCP/AC:
SIWSDCS:
SIW*BBP:
SIWSBBS:
SIW*DCP/AC:
SIWSDCS:
SIW*BBP:
SIWSBBS:
SIW*DCP/AC:
SIWSDCS:
SIW*BBP:
SIWSBBS:
SIW*DCP/AC:
SIWSDCS:
SIW*BBP:
SIWSBBS: