LW Measurements SC 76 - Manual

SELECT UNIT CALIBRATION
Scale is pre-calibrated at factory, do not calibrate unless scale is not
accurate
1. Press and hold UNITS key first and then press ON/OFF key.
2. Release both keys
3. Display will show “C=xx”
4. Note: xx is the calibration weight.
Press UNITS key to select calibration weight value for unit kg (10kg) or lb
(10lb / 20lb / 30 lb are selectable).
5. Press ZERO/TARE key
6. Display will show CAL and then a 5 digit A/D value. A/D
value is the internal digital count on the scale. It should be more or less
stable within +/- 5 counts. If it keeps going up or down continuously or
remains very unstable, the load cell may be bad.
7. Press UNITS key. (note this step is to capture the zero point – no weight
on the scale platter)
8. Display will show “……” then the calibration weight value.
9. Place weight on scale
10. Press UNITS key . Display will show “……” and return to the A/D value.
11. Calibration is complete, remove the weights and turn off the scale
If calibration is repeatedly incorrect then:
1) Replace the batteries
2) Try a more stable surface or vibration and interference free location
POSTAL SCALE
Model SC
INSTRUCTION MANUAL