OHAUS CS-200 Operating Manual page 4

Calibration
For best results, calibrate the scale at regular intervals. This is
especially important if the scale is in use for prolonged
periods.
1. Allow the scale to warm up and stabilize for two minutes
before commencing the calibration procedure.
2. Press and hold the "Cal/Unit" key until the calibration
weight flashes on the display.
3. With the calibration weight value flashing, press the
"On/Off/Zero" key, and the display will read "CAL 0." After
pausing for at least two seconds, place the correct
calibration weight gently on the center of the weighing
pan.
4. The display will momentarily show "CAL F" and then
return to active weighing. Calibration is complete when the
display correctly shows the calibration weight, and the
display has stabilized.
5. Remove the calibration weight and turn the scale off. Now
turn on the calibrated scale.
Note: If "CAL E" appears on the display instead of "CAL F", it
indicates that a calibration error has occurred and the process
should be repeated. The message "CAL E" will appear if the
calibration steps are not followed in the correct order or if an
incorrect calibration weight was applied.