Manual_BSA_II_英文操作说明书.pdf - 第34页

34 BSA II Operating Instructions Operation 8.5 Externally C alibrating and Adjusting the Device Material Calibration and adjustment weight Requiremen ts − The weighing pan is unloaded. − The opera ting display shows a st…

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BSA II Operating Instructions 33
Operation
8 Operation
8.1 Waiting for the Warm-up Time
In order to provide accurate weighing results, the device
must have reached the necessary operating tempera-
ture. The operating temperature is reached after the
warm-up time. The warm-up time starts when the device
is switched on.
Procedure
t Switch on the device.
t Wait until the operating temperature is reached
(warm-up time, see Chapter 15.7, page 46).
If a weighing process is carried out on a
conformity-assessed device during the
warm-up time: The weight value is marked
as invalid.
8.2 Leveling the Device with a
Level
Unevenness at the installation site of the device may re-
sult in incorrect weighing results. Leveling balances out
unevenness at the installation site.
Procedure
t To level the device: Bring the air bubble into the mid-
dle of the circular marking. To do this, turn the level-
ing feet to the left or right.
8.3 Overview of Calibration and
Adjustment
During calibration, a calibration weight is used to deter-
mine the deviation of the displayed value from the actu-
al value. The subsequent adjustment eliminates this
deviation.
We recommend regular calibration and adjustment:
− Daily, every time the device is switched on
− After every leveling
− After changing the ambient conditions (temperature,
humidity, or air pressure)
− After setting the device up at a new installation site
8.4 Calibrating and Adjusting the
Device Internally (Only I-1x
Models)
Requirements
− The weighing pan is unloaded.
− The operating display shows a stable weight value.
− The internal calibration and adjustment function is
set (see Chapter 7.2.1, page 32).
Procedure
t Press the [Zero] button.
t Press the [Adjust] button.
t The “INT.CAL.“ display is opened
t If the calibration with subsequent automatic adjust-
ment function is selected:
y The “CAL.RUN.“ display is opened in the operat-
ing display during the process.
y The “CAL.END.“ display indicates the end of the
calibration process.
t If the calibration without subsequent automatic ad-
justment function is selected:
t Press the [Confirm] button.
y The calibration process is started.
y The “CAL.RUN.“ display is opened in the operat-
ing display during the process.
y The calibration error is displayed.
t Press the [Confirm] button
y The adjustment process is performed.
y The “CAL.END.“ display indicates the end of the
calibration process.
34 BSA II Operating Instructions
Operation
8.5 Externally Calibrating and
Adjusting the Device
Material Calibration and adjustment weight
Requirements
− The weighing pan is unloaded.
− The operating display shows a stable weight value.
− The external calibration and adjustment function is
set (see Chapter 7.2.2, page 32).
− The preset weight value for the adjustment weight or
the user-defined weight value for the adjustment
weight is selected (see Chapter 7.2.2, page 32).
Procedure
t Press the [Zero] button.
t Press the [Adjust] button.
t Place the indicated calibration and adjustment
weight on the balance.
y The weight value is displayed.
t If the calibration with subsequent automatic adjust-
ment function is selected and the adjustment weight
placed on the device is within the specified limits:
y The adjustment process starts.
y If the “+“ prefix is displayed: The applied weight is
too high.
y If the “–“ prefix is displayed: The applied weight is
too low.
y The “CAL.END.“ message indicates the end of the
calibration process.
t Remove the adjustment weight.
t If the calibration without subsequent automatic ad-
justment function is selected and the adjustment
weight placed on the device is within the specified
limits:
t Press the [Confirm] button.
y The adjustment process starts.
y If the “+“ prefix is displayed: The applied weight is
too high.
y If the “–“ prefix is displayed: The applied weight is
too low.
y The “CAL.END.“ message indicates the end of the
calibration process.
t Remove the adjustment weight.
8.6 Printing Results of the Calibra-
tion and Adjustment Process
The results of the calibration and adjustment process
can be printed in a GLP printout.
Procedure
t Set the GLP printout in the menu (setting parame-
ters, see Chapter 4.6.7, page 24).
t Adjust the device.
y Once the calibration is complete: The printing pro-
cess starts.
8.7 Weighing
Chemicals can attack the device or the connected ac-
cessories internally and externally. This may damage the
device and accessories.
We recommend using appropriate vessels when weigh-
ing chemicals.
Requirements
− The device has been leveled.
− The device is calibrated and adjusted.
Procedure
t Zero the device. To do this, press the [Zero] button.
t If using a vessel for the sample:
t Tare the device. To do this, press the [Tare] but-
ton.
t Place the sample in the vessel.
t If no vessel is used for the sample: Place the sample
on the weighing pan.
y The weight value is displayed depending on the
selected application program.
BSA II Operating Instructions 35
Operation
8.8 Setting or Changing an Appli-
cation
Procedure
t In the “APPLIC.“ menu, select an application, e.g.,
“STATIST.“
t Press the [Confirm] button.
t Exit the menu.
8.9 Running Applications
(Examples)
8.9.1 Executing the “Toggle Between
Weight Units” Function
The “Toggle between weight units” function enables to
switch between a maximum of four different units. The
selected basic unit is displayed every time the device
started (see “UNIT“ Chapter 4.6.8, page 25). The
units can be set during the weighing process and the
decimal places can be adjusted.
Requirements
The “Toggle between weight units” function is activated
(see Chapter 4.6.8, page 25).
The weight value must be valid.
Procedure
t To switch the displayed weight unit during weighing
or before an application: Press the [Unit change]
button until the desired unit is displayed.
y The current weight value is displayed in the selected
unit.
8.9.2 Selecting Convertible Units and their
Decimal Places
Procedure
t Press and hold down the [Unit change] button.
t Select one of the parameters “Unit 1“ – “Unit 4“ in
the submenu. To do this, press the [Confirm] button.
t Select the desired unit. To do this, press the [Con-
firm] button.
t Specify the decimal places for the selected unit. To
do this, press the [Confirm] button once again.
t Select the desired number of display digits. To do
this, press the [Confirm] button.
8.9.3 Running the “Statistics” Application
The “Statistics“ application saves up to 99 weight val-
ues and evaluates these statistically.
The following values are saved and exported:
− Number of components
− Mean value
− Standard deviation
− Variation coefficientSum of all values
− Lowest value (minimum)
− Highest value (maximum)
− Spread: Difference between maximum and minimum
Requirements
− A printer or a PC is connected and configured.
− The “STATIST.“ application is selected.
Procedure
t Place a sample on the weighing pan.
t To save the weight value: Press the [Confirm] button.
y The position of the saved value is displayed, e.g., “NO
1“.
y The recording of the statistics starts.
t Remove the sample on the weighing pan.
t To save the next value:
t Place a new sample on the weighing pan and
press the [Confirm] button.
t To switch between the display of the current weight
value, the number of saved components, and the cal-
culated mean in the results display: Press the [Up] or
[Down] button.
t To delete all saved values: Press the [Back] button.
y The evaluation is printed and the active GLP printout
is ended.
t To print and exit the current statistics, and to delete
the saved values: Press the [GLP] button.