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
instrument.
Perform adjustment to eliminate any
difference determined, or to reduce
it to a level that is within the applicable
tolerance limits.
Configuration for Use in Legal
Metrology
To configure the Midrics for use in
legal metrology (select VERIF. in ADC
configuration), adjust the switch on the
back of the display and control unit.
The switch is covered by a protective
cap.
Position:
§ Switch on the right: For use in
legal metrology
§ Switch on the left: External calibration/
adjustment accessible
1
) = Setting cannot be changed on scales
verified for use in legal metrology
2
) = Factory setting on instruments verified
for use in legal metrology
Features
You can configure the parameters
listed below in the operating menu.
Which of the features listed here are
available depends on the connected
weighing platform.
– External calibration/adjustment blocked
in verified weighing instruments
– External calibration/adjustment with
the default weight value or standard
weight (not available on verified
instruments). Configure under:
Setup
wp-1
1.9.
: (Calibration and adjustment)
– Specify the weight for external
calibration/adjustment:
Setup
wp-1
1.18.
: (Enter calibration weight)
– Block the ) key to prevent use of the
two functions described above (1.9.10):
Setup
wp-1
1.9.
: (Calibration and adjustment)
– Calibrate first; then adjust
automatically or manually (not on
verified weighing instruments):
Setup
wp-1
1.10.
: (Calibration/adjustment
sequence)
– Flashing
WP symbol as adjustment
prompt. If more than one weighing
platform is connected, the platform
number is also displayed:
Setup
wp-1
1.15.
: (Calibration prompt)
– Block external calibration/adjustment:
Setup
wp-1
1.16.
: (External calibration)
Note
On verified weighing instruments,
the external calibration/adjustment
function is available only when the
menu access switch is in the “open"
position, which entails breaking the
verification seal. The equipment must
be re-verified after the seal has been
broken.
Preparation
§ Switch on the scale: Press e
§ While all segments are lit,
press the ) key
§ Select the Setup menu: Press k
repeatedly until
Setup is displayed
§ Open the Setup menu:
Press the ) key
$ Select weighing platform 1, “
WP1”:
Press the ) key, or
$ Select interface 1, “
COM1" or interface 2,
“
COM2" (depending on the interface
used): Press the ) key
Setup
wp-1
1
1.9. Calibration and
adjustment
1.9.1* Ext. calibration/adjustment;
default weight
1.9.3 Ext. calibration/adjustment;
user-defined weight (menu
code 1.18.1)
1.9.10 No function when you
press and hold ) > 2 sec
1.10. Calibration/adjustment
sequence
1.10.1 Calibration with automatic
adjustment
1.10.2* Calibration with adjustment
triggered manually
1.11. Zero-setting range
1.11.1 1 percent/max. cap.
1.11.2* 2 percent/max. cap.
1.12. Initial zero-setting range
1.12.2 2 percent/max. cap.
1.12.3 5 percent/max. load
1.12.4* 10 percent/max. load
1.13. Tare/zero at power on
1.13.1* On
1.13.2 Off; load previous
tare value
1.13.3 Only zero at power on
1.15. Calibration prompt
1.15.1* Off
1.15.2 Calibration prompt (W)
flashes on the display
1.16. External calibration/
adjustment
1)
1.16.1* Accessible
1.16.2
2)
Blocked
1.17.
1.17.1 Grams
1.17.2* Kilograms
1.17.4 Pounds
1
)
1.18. Enter calibration weight
1.18.1 External user-defined
weight; (enter value; e.g.:
10,000 g)
§ Save settings and exit operating menu:
( key (repeatedly)
36
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