Arizona MAX-5000XL - Manual (Page 27)

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When the prediction is sufficiently reliable, the test ends and the predicted
result is displayed, stored in the instrument, and printed if an accessory printer
is enabled and attached. Proper selection of the ending criteria can greatly
improve the test times and repeatability.
 Auto - The instrument
monitors the progress of
moisture determination and
automatically selects the
ending criteria most
appropriate to the test under
way.
 Manual - In a few
instances, best
performance will be
achieved by adjusting the
ending criteria.
This ending criterion is
called the Reliability, and
is activated when the predicted moisture value and the actual moisture loss
are sufficiently close together. The number displayed is a percentage,
equal to the actual moisture loss divided by the predicted moisture, times
100%. For example, if 90% is entered, the test will end when the actual
moisture loss is within 90% of the predicted moisture.
 Rate - This feature ends the test
when the weight loss rate falls
below a selected value. This
value is a “percent per minute.”
For example, entering 0.100
means that the test will end when
the rate of change of the actual
weight loss is less than 0.100 %
of the original sample weight per
minute.
 The instrument's program
assumes that the sample
contains volatile material that
will completely evaporate after some time. It further assumes that, at first,
the rate will increase to a maximum point, and then gradually decrease to
zero. Selecting some threshold rate value will cause the test to end before
the sample is completely dry. Rate is useful to profile a sample's weight
loss. Some applications are faster in the rate ending criteria. Others are
faster in the prediction ending criteria.