LW Measurements LWC 800 - Manual (Page 23)

23
5 Calibration - Using a Calibration Weight
Again, Calibration is done in the factory. Don’t re-calibrate the machine unless
it is not accurate. Thirty (30) minutes of warming up of the machine is always
needed before calibration.
A reminder when operating our larger capacity
scales:
The scales of the LWC series are calibrated at the factory. Usually no
recalibration is necessary unless major inaccuracies are observed. If
calibration is deemed necessary, an appropriate test weight of at least
2/3 of the full capacity of the scale should be used to obtain accurate
weighing.
Calibration procedure:

Press and hold ZERO key and then press ON/OFF key to turn on the
scale, the display will show CAPu=

Press HOLD key, display will show CAP, press HOLD key again,
display shows CALu=, press UNIT key to select calibration unit KG or
LB, a triangle icon will display to indicate KG or LB, press HOLD key to
confirm, it will show CALu= again.

Press HOLD key again, the display will show CAL, press UNIT key to
set calibration weight, display will show XXXXX with a flashing digit,
press UNIT key to move the flashing digit to right, press ZERO key to
increase the value of the flashing digit, press HOLD key to confirm, it
will show CAL again. (We recommend a calibration weight at least 2/3
of the full capacity to get an accurate weighing).

Press PRINT key, display will show CAL and then the AD value, press
UNIT key when the stable indicator displayed, it will show the flashing
calibration weight,

Place the known test weight on the platform, press UNIT key after
stable indicator displayed, it will show ------, and then the AD value,
now the calibration is finished.