Model FG1235 Scale Kit
Rev 021210
SECTION
III
3.0
CALIBRATION
3.1
Periodic Calibration Check - IMPORTANT :
The following calibration procedure should only be performed by
qualified service personnel. The FG1235 load cell, itself, has no user serviceable components and should not be
tampered with for any reason. Re-calibration is generally not required, but should be verified periodically to ensure
accuracy. Our recommendation for calibration check is at least once every 12 months or as your maintenance policy
requires.
3.2 ESD
–
The integrated circuits and semiconductors on the printed circuit boards may be damaged by electrostatic
discharge (ESD). Be sure to use proper handling precautions at all times.
3.3 CALIBRATION
PROCEDURE
- NOTE: Make sure that nothing is in contact with the scale system during this
procedure. Be sure to remove your hands from the system when noting the displayed calibration results.
1.
Press
and the
"FREEZE"
button.
2. When the display indicates
"FREEZE = (weight)"
, press and hold the
"LB/KG"
button. The display will read
"CAL"
as the right hand digit counts down to enter the
CAL MODE.
3. When in the
CAL MODE
, press the
"ZERO"
button to zero the display.
4. Place a known calibrated weight on to the weighing surface and compare it to the displayed reading.
5. Use
the
"WEIGHT"
button to make
"+"
corrections and the
"DELTA WEIGHT"
button to make
"-"
corrections to the displayed weight. The displayed value should be within 0.2% of the calibrated weight plus or
minus 1 digit of reading.
6. Remove weight and re-zero. Repeat steps 5 and 6 until results are satisfactory.
7. When adjustments are completed:
a). Press the
"ON"
button to
ABORT
your changes and exit the CAL mode
(or)
b). Press the
"FREEZE"
button to
SAVE
all changes and exit the CAL mode.
3.4
CALIBRATION TOLERANCE TABLE
LOW
APPLIED
HIGH
LIMIT
LOAD
LIMIT
99.9
100.0
100.1
199.8
200.0
200.2
299.7
300.0
300.3
399.6
400.0
400.4
499.5
500.0
500.5
599.4
600.0
600.6
699.3
700.0
700.7
799.2
800.0
800.8
899.1
900.0
900.9
999.0
1000.0
1001.0
3.5
MAINTENANCE, CARE and CLEANING
- The transducer housing for the FG1235 Scale System is made of powder-coated
steel tube. You need only exercise caution when cleaning the display window of the electronics as this is made of clear polyester .
We recommend mild soap and water for general cleaning and disinfecting.
3.5.01
WARNING: DO NOT
use pressurized water or steam. The scale system contains microprocessor circuitry and strain gage
sensors that may be adversely affected by exposure to such an environment.
3.5.02 STORAGE
–
If storing this equipment for periods longer than 3 months remove the batteries. Observe storage conditions in
section 1.2.12
3.5.03
BATTERY REPLACEMENT –
When battery replacement is needed the display will indicate “CHANGE BATTERIES”.
Remove ALL SIX BATTERIES and replace with new.
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