Sartorius combics 1 Operating Instructions Manual page 80

Service
Descriptions of the
Individual Menu Items for
A/D Converter Configuration
Standard/Trade Configuration
(Menu Items 9.1.3 / 9.1.4)
Before configuring the A/D converter,
you must define whether the weighing
instrument is to be used in the
"standard" mode or in the "trade" mode
(verified for use in trade/ legal metro-
logy).
– Standard configuration: 9.1.3
– Trade configuration: 9.1.4
Accuracy Class (Menu Item 11.1)
Shown only for "trade" configuration.
Only menu item 11.1.4 (Accuracy class
l/m) can be selected here. If the
menu item is not marked with a circle (o)
indicating it is already active, press )
repeatedly until this menu item
is activated.
Select Configuration Unit
(Menu Item 11.2)
The weight unit to be used for
configuring the A/D converter must be
selected here.
Selecting the Weighing Range
(Menu Item 11.3)
This setting defines whether menu items
11.5, 11.6 and 11.7 for further confi-
guration steps are shown or hidden.
– Single-range weighing instrument
(11.3.1)
The entire weighing range is divided into
scale intervals on the basis of the lowest
interval d and the maximum load.
Readability is equal to scale interval d.
– Multiple-range weighing instrument
(11.3.2)
A multiple-range weighing instrument
has two or three weighing ranges. When
the maximum capacity of a lower range
is exceeded, the weighing instrument
switches to a higher range (lower reso-
lution) and remains in that range. The
weighing instrument can be returned
to the lower weighing range (higher
resolution) only by pressing the (
key and then unloading the weighing
instrument.
– Multi-interval weighing instrument
(11.3.3)
By activating the "Multi-interval weigh-
ing instrument" function you can divide
the weighing capacity into as many 3
weighing ranges, each with a different
readability. The weighing instrument
switches from one range to the next auto-
matically, in accordance with the range
limits specified. Once the weighing
instrument has been tared, the highest
possible resolution is available even if
the weighing instrument is loaded.
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Scale Interval d
Scale interval d indicates the resolution of
the weighing instrument. The scale interval
d can be entered only in increments of 1,
2, 5, 10, 20, 50, etc.
This menu item is not shown when the
"trade" configuration is active. On veri-
fiable or verified weighing instruments
(class l and m) scale interval d is equal
to verification scale interval e.
Verification Scale Interval e
The verification scale interval e indicates
the resolution of the weighing instrument
in legal metrology. The scale interval d
can be entered only in increments of 1, 2,
5, 10, 20, 50, etc.
This menu item is not shown when the
"standard" configuration is active.
Maximum Capacity (Max. Cap.)
The maximum capacity is the maximum
load that may be placed on the weighing
instrument. If a heavier load is placed
on the instrument, the display shows H.
The scale intervals are calculated from the
maximum capacity and the scale interval d
(e.g., a maximum capacity of 15,000 kg
with a lowest scale interval d of 0.005
yields 3000 scale intervals).
In legal metrology, the number of intervals
must not exceed 3000 e; for multi-interval
weighing instruments, the limit is 3000 e
per range.
In "standard" operation, as opposed
to legal metrology, you can define
a "SuperRange" weighing instrument with
more than 3000 intervals. These para-
meters, however, may be influenced by
physical restrictions.
Minimum Capacity (Min. Cap.)
This menu item is not shown when the
"standard" configuration is active.
The minimum capacity of the connected
weighing instrument is entered here.
The minimum capacity for weighing
instruments of class l is 20 e;
for class m instruments, it is 10 e.
Note: The function of the minimum capa-
city setting is to warn operators that below
this limit, the summation of tolerances
might lead to significant measurement
errors. In Germany, for example, initial
weights below the minimum capacity
are not allowed.
Range 1, Range 2, Range 3
Here you can enter the limits for each
of the weighing ranges. When a limit is
exceeded, the accuracy changes.
The following applies when entering range
limits:
Range 1 < range 2 < range 3
< maximum capacity
Thus the weighing capacity can be divided
into 4 ranges. The display resolution
changes in intervals of 1, 2, 5, 10, 20 etc.
The lowest resolution is the lowest scale
interval d. Ranges you do not require
should be set to 0.
Available Weight Units (Menu Item 11.7)
The weight units available for use in the
normal weighing mode are selected here.
Available units are indicated by a circle (o)
on the display (more than one can be
selected).
Calibration/Adjustment Unit
(Menu Item 11.8)
The weight unit used for calibration/
adjustment of the weighing instrument
is selected here. The unit selected here
is used for calibration/adjustment even
if a different unit is selected for the normal
weighing mode.
Save Configuration Parameters
(Menu Item 11.10)
Save the A/D converter configuration
by selecting menu item 11.10.1.
Checking and Configuring the Equipment
for Use in Legal Metrology
A metrological ID tag is included with
the Combics indicator.
Following A/D converter configuration,
write the metrological data on this tag
for all weighing ranges. Affix this tag
below the display and cover it with the
waterproof acetate overlay.
Open menu item 1.7 to make sure only the
permitted weight units are accessible.