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CALIBRATION (Cont.)
Calibration Masses
Before beginning calibration, make sure masses are available.
If you begin calibration and realize calibration masses are not
available, exit the exit the procedure by pressing and holding
Mode Off until balance returns to weigh mode. The balance will
retain previously stored calibration data. Calibration should be
performed as necessary to ensure accurate weighing. Masses
required to perform the procedures are listed in the following
table.
CALIBRATION MASSES
LINEARITY
CAPACITY
65g
150g
210g
310g
510g
1500g
500g/1500g
3100g
1000g/3000g
4100g
2000g/4000g
Masses must meet or exceed ASTM Class 1 Tolerance.
Calibration masses are available as accessories.
Span Calibration
1. With the balance turned ON, press and hold >O/T< until CAL
is displayed.
2. Release >O/T< , -C- is momentarily displayed followed by the
value of the calibration mass which is to be placed on the pan.
Do not disturb the balance when -C- is displayed. Incorrect
calibration may result.
3. Place the indicated span calibration mass on the pan.
4. Press >O/T<, -C- is momentarily displayed, then the weight of
the mass on the pan is displayed.
5. Remove the calibration mass from the pan. The balance is
now calibrated and returns to the weighing mode.
Linearity Calibration
1. With the balance OFF, press and hold >O/T< until MENU is
displayed, then release it and UNITS is displayed. Press
Mode Off, LIN is displayed.
2. Press >O/T<, -C- is displayed followed by the value of the first
mass which must be placed on the pan.
3. Place the required mass on the pan and momentarily press
>O/T<, -C- is displayed followed by the value of the next
mass to be placed on the pan.
Do not disturb the balance while -C- is displayed.
4. Place the second required mass on the pan and momentarily
press >O/T<, -C- is displayed. When the weight on the pan
is displayed with the stability indicator, the balance is cali-
brated and returns to the weighing mode.
5. Remove the calibration masses from the pan.
SPAN ONLY
MASSES
MASSES
20/50g
100g/150g
150g
100g/200g
200g
100g/300g
300g
300g/500g
500g
1500g
3000g
4000g
CARE AND MAINTENANCE
To keep the balance operating properly, keep the housing and
platform clean. If necessary, a cloth dampened with a mild de-
tergent may be used. Keep calibration masses in a safe dry
place.
RS232 COMMAND DATA TABLE
Command
Character
P
T
50g
?
XS
XS
XS
NOTE: Print commands entered through the computer are
temporary. When the balance is turned off, it will return to
balance menu settings when turned on again.
1
N/C
2
Data Out (TXD)
3
Data In (RXD)
4
N/C
5
Connected to pin 8
6
N/C
7
Ground
8
Connected to pin 5
9
N/C
TROUBLESHOOTING
SYMPTOM
No Display.
Incorrect weight
reading.
Calibration proce-
dure
does
work.
Unable to display
weight in a particu-
lar weighing unit.
Balance
won't
store selections
made in menu.
4
Description
Print command
Tare command
Displays current mode
X=0 (zero) Stable off
X=S Stable on (default setting in balance)
X=A Auto print on stabilty
1
2
6
PROBABLE CAUSE
Power Adapter not
connected.
Balance out of cali-
bration.
Balance was not
rezeroed
before
weighing.
Incorrect calibration
not
masses being used.
Weighing unit not ac-
tivated in menu.
END selection was
not used to exit
menu.
3
4
5
7
8
9
REMEDY
Connect AC Adapter.
Calibrate the bal-
ance.
Press >O/T< with no
weight on the pan,
then weigh item.
Use correct masses.
Use Units menu to
set desired units ON
(see menu).
You must use END to
exit each menu and
save selections.
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