Sartorius Combics CAH1, Operating Instructions Manual

Page: 53 / 168

Operating Instructions Combics Indicators 53
Resolution
The resolution indicates the accuracy used to determine the reference weight.
The default setting is “display resolution.” The resolution is increased when “10-
fold” or “100-fold” is selected. “10-fold” increases the resolution of the net value
by one step (display resolution x 10), “100-fold” increases it two steps (display
resolution x 100).
Setting:
Applic./Applic.1/Count./RESOLUT
menu item 3.9.
Parameter for Saving Weight Values
The weight on the platform is saved as a reference value as soon as the platform has
stabilized. “Stability” is defi ned as the point at which the fl uctuation of a measured
value lies within a defi ned tolerance. The narrower the tolerance, the more stable the
platform is at “stability”.
The “increased stability” setting has a lower tolerance so that the average piece
weight saves is more accurate and the results more reproducible; however, the
measurement time can take longer.
Setting:
Applic./Applic.1/Count./SAVE WT.
menu item 3.11.
Reference Sample Updating
You can defi ne whether or not the reference sample weight is updated automatically
during weighing using this setting. The reference sample weight is updated
automatically only when the following criteria are met:
1. “Automatic” must be set for reference sample updating in the menu.
2. The current piece count exceeds the original piece count by at least two.
3. The current piece count cannot be more than double the size of the original
piece count. This limitation does not apply to the fi rst update if the piece weight
was entered via a barcode scanner or keypad.
4. The current piece count is less than 1000.
5. The internally calculated piece count (such as 17.24 pcs) differs by less than
± 0.3 pcs from the nearest whole number (in this example: 17).
6. The weighing platform is stable in accordance with the parameter defi ned for
saving weights.
If automatic reference sample updating is selected in the menu and the piece count
(pcs) is displayed, the
Auto
symbol is displayed below the bar graph. If the average
piece weight has been updated since you began weighing, the text line shows the
0pt
symbol. During an updating operation,
0pt
and the updated piece count are
displayed briefl y in the measured value line. The new reference sample weight and
reference sample quantity are saved.
Setting:
Applic./Applic.1/Count./REF.UPDT
menu item 3.12.
Counting with Two Weighing Platforms
You can use two weighing platforms simultaneously with the Counting application.
When using two platforms, you can choose from the following operating modes:
– Counting with two platforms of the same type
– Counting with one reference platform and one weighing platform
Counting with two platforms of the same type
Use this mode to count different types of sample material with different weights.
For example, count the lighter-weight pieces on one platform and the heavier pieces
on another. You can
defi ne one of the two scales as the reference scale.
The reference scale is the fi rst scale active when you switch on the device, regardless
of the setting for automatic initialization of the Counting application.
Counting with one reference platform and one weighing platform
In this operating mode, the reference platform is a high-resolution weighing
platform with a relatively low maximum capacity. The other platform is used for
weighing heavier samples, and has a high capacity with a relatively low resolution.
This allows you to both determine the reference sample weight with high resolution;
i.e., very precisely, and to count large amounts of parts, without requiring an
expensive high-resolution, high-capacity weighing platform.
Operation