5–8
CUTOFF LIMIT AS A PERCENTAGE. To enter the cutoff limit
as a percentage of the initial sample mass, press 〈2〉 at the Cutoff
Units menu shown on page 5–7. The oven displays:
Current Cutoff Limit
X.XXX %
do you want to
change Cutoff Limit?
f To exit without changing the cutoff limit, press 〈NO〉. The oven
returns to the Burn Parameter Menu.
f To change the cutoff limit, press 〈YES〉. The oven displays:
Enter Cutoff Limit
from 0.001% - 1.000%
in 0.001% steps
then press ENTER
Use the numeric and decimal keys to enter a cutoff limit from
0.001% to 1.000% in increments of 0.001%. Use the numeric
keys to set the burn time. After entering the cutoff limit, press
〈ENTER〉. The oven returns to the Burn Parameter Menu.
Calculation Type
The oven provides two methods for calculating %Loss: the bitumen-
to-sample method and the bitumen-to-aggregate method. Both
methods measure the difference in the sample weights before and
after the burn. However, the bitumen-to-sample method expresses
the difference as a percentage of the starting mass while the
bitumen-to-aggregate method expresses the difference as a
percentage of the final (aggregate) mass.
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