Calibration - Acom JW-1 Owner's Manual

Calibration

The following procedure describes how to Zero Calibrate and Span
calibrate the balance. These two are always done together.
Calibration
1. Turn scale off and remove the platter.
2. Locate the CAL Switch (rear of platform).
3. Press and hold down the CAL Switch while you turn on the scale.
4. Once the display reads SPAn , release the CAL Switch.
5. Replace the platter on the platform.
6. Press the
7. After the STABLE lamp turns on, press the
8. The scale will display rEAd and then show FULL.
9. Press the
10. Once the STABLE lamp turns on, place the mass weight on the
platter. This mass must be equal to exactly the balance's
capacity in grams.
11. After the STABLE lamp turns on, press the
12. The scale will display rEAd , then show End , and then show
†
SELF.
13. Remove mass weight from the platter.
14. Turn scale off and then back on.
†
The balance may show HHHHHH or LLLLLL at this point
NOTE:
instead of End.
If it displays HHHHHH then the mass weight that you are using to
calibrate is too heavy or the scale may need servicing (the load cell
may have been overloaded or shock loaded.)
If it displays LLLLLL then the mass weight that you are using to
calibrate is too light or the scale may need servicing (the scale may
have been dropped or mistreated.)
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