Hofmann Compact CO5000 Bedienungsanleitung Seite 15

How to calibrate
1. Before entering calibration mode, press [I/O] to turn the
power on for 1minutes.
2. Enter calibration mode
Press [I/O] to turn the power off. Press and hold [ZERO], after
3~5 seconds the display will show the A/D value.
3. Calibration by the weight
Wait for 3 seconds, Press [ZERO] the display will show
"2Ero", then the display will return to full weight value.
4. Place the full weight (eg.5000g for FRJ5000) in container. then
press [ZERO], the display will show "CAL", then the displayed
will return to "PASS", Now calibration is finished.
5. Press [I/O], turn off the power, press [I/O] turn on the power
again, place full weight (eg.5000g for FRJ5000) in the
container to make sure whether weighing is correct, if not,
repeat steps 2-5.
6. Return to weighing mode
Press [I/O] to turn the power off. Press [I/O] again to turn on
the power and the scale return to the weighing mode.