Operating instructions

70
Averaging (Animal Weighing) V
When the Averaging application is
selected, you can use your weighing
platform for calculating weights as
the average of a number of individual
weighing operations. These individual
operations are also known as
“subweighing operations."
This application is used to determine
weights under unstable ambient
conditions or for weighing unstable
samples (such as live animals).
Features:
– Manual start of averaging routine
– Automatic start of averaging routine
– Press the r key to select the desired
number of subweighing operations
– Toggle the display between result of
the last measurement and weight by
pressing w.
Factory settings:
– Minimum load for automatic taring and
automatic printing: 10 digits (3.5.4)
– Minimum load for automatic start:
1 digit (3.6.1)
– Automatic taring (first weight on
platform tared): Off (3.7.1)
– Application started automatically with
most recent initialization data when
Combics switched on: Off (manual start)
(3.8.2)
– Start of averaging routine: Manual
(3.18.1)
– Deviation of successive subweighing
operations: 0.2% (3.19.2)
– Automatic printout of results: Off
(3.20.1)
– Display of results static when platform
unloaded: Display fixed until unload
threshold reached (3.21.1), or press c
and then O to restart.
– Number of subweighing operations: 10
Minimum Load
The minimum load at initialization is
configured in the Application settings
(3.5: minimum load for automatic taring
and automatic printing; 3.6: minimum
load for automatic start). You can
choose from the following ten levels for
this setting:
1 digit (no minimum load)
2 digits
5 digits
10 digits
20 digits
50 digits
100 digits
200 digits
500 digits
1000 digits
The “digits" here refer to the weighing
platform intervals in the connected
weighing platform. If the interval of the
connected platform is 1 g, for example,
and 1000 digits are required, you must
place at least 1000 g
(= 1000 intervals = 1000 digits) on the
weighing platform for initialization.
If the interval of the connected platform
is 5 g, you have to place at least 5000 g
on the platform for initialization to
achieve the number of digits required in
the above example.
Once the limit is exceeded by the load,
initialization can begin. If the load on
platform is too light for initialization,
the following will occur when you try to
initialize the application, the averaging
routine does not start.
In order to calculate an average
weight, you need to perform several
subweighing operations. These are
performed consecutively as soon as the
weight of one sample differs from that
of the previous sample by less than the
preset deviation limit.
The value for this deviation is entered
in the Application settings (3.19) as
a percentage and is another parameter,
in addition to the minimum load, for
starting the averaging routine.
You can also define a minimum weight
in the Application settings (3.6). This
is especially helpful when using the
“automatic start" function.
Whether averaging starts automatically
or manually is also defined in the
Application settings (3.18).
There are four modes for calculating
average weights:
– Manual start with preset number of
subweighing operations
To use this mode, place the sample or
animal on the weighing platform and
press O.
– Manual start with the number of
subweighing operations entered
manually
To use this mode, place the sample/
animal on the weighing platform,
press r to select the number of
subweighing operations (5, 10, 20, 30,
40 or 50) and then press O.
– Automatic start with preset number of
subweighing operations
The subweighing operations begin when
the weight of the sample/animal on the
weighing platform exceeds the minimum
load preset in the Application settings.
– Automatic start with the number
of subweighing operations entered
manually
To use this mode, press r and enter
the number of subweighing operations
before placing the sample or animal on
the weighing platform.
If the automatic taring function is
active, the weight of the first load is
stored as the tare value, and averaging
begins only when the second load is
placed on the weighing platform
(provided this weight exceeds the preset
minimum load).
The number of subweighs remains
active in the reference memory, and is
automatically loaded when you select
Averaging again after having used
another application. It also remains
stored after you switch off the Combics.