Sartorius MA35, Руководство по эксплуатации

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16
While preparing substances for measure-
ment, no processes may be used that
generate heat . The heat generated may
result in a loss of moisture prior to the
measurement .
Perform initial analysis of a new substance
to test how the IR rays are absorbed by the
sample and converted into heat . A printout
of the intermediate values of the drying
process provides information on this at an
early stage .
Since introducing IR rays produces intensive
energy input in the sample, the temperature
setting selected for infrared drying is usually
lower than the temperature setting used
when working with a drying oven .
In many cases, the fully automatic switch-
off mode will meet your requirements . If the
final result is higher or lower than expected,
try varying the temperature setting before
resorting to a different switch-off criterion .
When analyzing the samples that lose their
moisture only very slowly or when operating
a cold moisture analyzer, the fully auto-
matic mode may end the drying routine too
early since no analyzable progress in the
drying routine can be detected . In this case,
preheat the moisture analyzer for two to
three minutes before starting the drying
routine, or select a different switch-off
criterion .