Sample size options – Arizona MAX-5000XL User Manual

Page 29

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Reliability

– This feature is

similar to Rate but is based
on a percent of accuracy.
With reliability set to 99%,
the test would end when the
actual moisture loss was
within 99% of the predicted
result. A value may be set
that would give exceptional
results when the actual
result is within 90 to 99
percent of the predicted
result. This ending criterion
is less dependent on actual moisture loss than Rate.


Temp Then … – These features are used when rate or predict criteria alone
would end the test after the release of free or bound moisture but before the full
temperature is reached. The MAX 5000XL first checks to see that the
temperature is within two (2) degrees of the test temperature before checking
for the other criteria as previously described. This can be helpful for ashing,
which takes a while to reach the final temperature, and testing ultra low
moisture samples, which don’t readily release moisture at the beginning of the
test.

Sample Size Options

This feature enters a target sample
size and the minimum and maximum
sample range. Sample size ranges
can be programmed from 0.1 gram to
99.9 grams. The total difference in
values between size and window must
be between 0 grams minimum and 100
grams maximum.

Sample Size - The sample size

should be consistent for all tests
on a particular product in order
to get the best standard
deviation possible. High volatile
materials, such as coatings, typically require smaller sample sizes (one to three
grams). Low moisture materials, such as plastic resins, typically require larger
sample sizes. The instrument is optimized for low moisture testing with a 30g
load. Ashing typically requires a smaller sample size to reduce the residue that
is emitted during testing. The instrument is optimized for ashing with a 4g load.
Contact your technical sales representative for appropriate sample sizes.

Sample Window - The number entered sets the allowable tolerance of the

sample to be loaded.

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