LW Measurements HRB 3002 - Manual (Page 19)

19
5 Calibration - Using an External Calibration Weight
Calibration is required when the weighing machine is initially installed or if the Balance is moved to a
substantial distance from the original location. 30 minutes of warming up of the Balance is always
needed before weighing and calibration.

Turn the Balance on and when display shows “--------”, press ZERO key
 The display will show “CAL”
 Press ZERO key again, the display will show “X000.00”, “X” is the flashing digit

Press UNIT key, the flashing digit will move to right

Press PCS key to increase the value of the flashin g digit(“X” is the calibration weight can be set
according to users’ requirements, we recommend a minimum weight of at least 50% of the
Balance capacity)
 Press ZERO key, display will show “CAL” and then series of the digit, wait for stable indication
shows, press UNIT key , display will show --------
, then “X000.00”

Place the corresponding test weight on the center of the pan

The display backlight lits and returns to weighing mode

Now the calibration is completed

Turn off the power, then turn on the power again, place a known weight on the platform to verify if
it is accurate.

If not, repeat above steps.