Checkweighing - Sartorius LA Reference Series Operating Instructions Manual

Checkweighing

H
Purpose
This program is used to check whether
a sample corresponds to a pre-set target
value or is within a specific tolerance
range. In addition to the display in the
measured value line, the results are
shown on the bar graph and can also be
routed through the interface port via
control lines for further electronic pro-
cessing.
You can use the "Checkweighing" appli-
cation in combination with a program
chosen from Application 1 (e.g., count-
ing, weighing in percent) and one from
Application 3 (totalizing, formulation,
statistics).
Available Features
– Optional configuration in the Setup
menu for long-term storage of target
value and tolerance limits
– Optional balance configuration in Setup
for automatically initializing this appli-
cation and loading the values stored in
long term memory for the target value
and the upper and lower tolerance
limits when you turn on the balance
– You can perform checkweighing
– without entering a target value,
but only upper and lower tolerance
limits;
– as differential checkweighing;
– with symmetric or asymmetric limits
which can be entered as percentages
– Enter target value and limits by placing
a load on the balance or using the
numeric keys
– Control in entering target and tolerance
values, so that the upper limit > the
target > the lower limit >1 display
increment
– Accuracy of a weight readout or key-
board input as target/tolerance values
corresponds to the display accuracy
– Optional balance configuration in
the Setup menu for automatic output
to the interface port (print application
parameters) of target value and toler-
ance limits when initialization
is completed
– Control range for the balance's data
output port lines is 30% to 170% of the
target value
– Optional configuration in the Setup
menu for activation of control lines
dependent on weight value (weight
value within control range, stability
reached)
– Toggling the display between weight
readout and control (checkweighing)
display by pressing the corresponding
soft key. If the weight value exceeds
tolerances, the measured value line
shows the weight while the control
display shows "LL" for "too low"
or "HH" for "too high."
Show
– Press the soft key to display
target value and tolerance limits in the
text line after initializing the applica-
tion.
– Weight value in bar graph displayed in
relation to upper and lower limits and
target value.
– "OK" value counter displayed in the text
n = 4
line (e.g., ). This counter shows
the number of measured values that lie
within the tolerance range.
– Optional automatic printout of weight
value when it is within the control
range at stability
After an automatic printout, the
balance is blocked. Before you can
generate the next printout, you must
unblock the balance by unloading it
(weight must be under 30% of the
target) or by placing a load on the
balance (bringing the weight up to at
least 170% of the target).
– Press c to delete the initialization
parameters and end the Checkweighing
program
Factory Settings
Within
Activation of port lines:
checkweighing range
Type of checkweighing input:
Target, minimum,
maximum weight
Weight display mode:
Absolute value
Automatic printout of OK values:
Soft Key Functions
Param.
Begin input of target and
tolerance values
Show
Display target and toler-
ance values in turn during
checkweighing
LLHH
Toggle to control display
("LL" for too light and
"HH" for too heavy)
Diff.
Display difference between
current value and target
Net
Display net weight
No
79