OHAUS PR Série Manuel D'instructions page 13

PR Series Balance
3. Press Yes, and PUt.ref (put the reference weight) will
display.
4. Place the reference sample on the pan to display the weight.
When the reading is stable, the * appears.
5. Press the Function / Mode button so that the weight of the
reference sample is stored in memory. The display will show
100%.
6. Remove the reference sample, and place the test object on
the pan. The ratio of the test object to the reference sample
weight is displayed as a percentage.
7. To view the reference sample weight or the percentage of the
test object weight to the reference sample weight, press the
Function / Mode button.
8. To establish a new reference sample weight, long press the
Function / Mode button and repeat the steps described
above.
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