Shimadzu MOC-120H, Инструкция по эксплуатации

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Display
12-2-2 Evaluating predicted measurements
Operating instructions
With the mode set to preparatory measuring mode, set the bias obtained by
the procedure described in 12.2.1. In the example shown here, a bias of 0.60
percent has been specified. (For information on how to set the bias, see “8-2-4
Bias”.)
* Do not change any other settings (i.e., the predicted value convergence range
and drying temperature) at this time.
Place the sample onto the sample pan and begin measurement. (In the
example shown here, the initial weight is 10.478 grams.)
When the predicted measurement result has been obtained, a predicted
measurement adjusted by the specified bias (here a bias of 0.60%) will be
displayed. (In the example shown here, the measuring time was 7 minutes and
the predicted measurement is 16.10 percent.)
Completion of measurement
Measuring will be completed when the conditions specified for automatic
operation mode have been met.
Measurement results
Bias is ‘+ 0.90’
( = 16.40 (Automatic operation mode value) – 15.50 (Predicted measurement when
bias is ‘0‘.) )
* Note that the specified bias (0.60%) does not affect the bias displayed here.
Automatic operation mode measurement
Predicted measurement adjusted using specified bias of 0.60%
= 15.50 (i.e., predicted measurement when bias is ‘0’) + 0.60 (i.e., specified bias)
Without changing any of the specified in step
1
, repeat steps
2
through
4
to
measure again 5 times or more and obtain a comparison of the values between
automatic operation mode and predictive measurement mode.
If the difference between the two sets of values is within an allowable range,
then the specified bias may be judged to be an appropriate one. If the
difference between the two sets of values exceeds allowable levels, then the
average bias from the comparison just performed should be calculated and
specified as the new bias. The evaluation process should be performed again.
* If the difference between the two sets of values exceeds allowable levels and
the bias varies sharply over repeated measurements, it is assumed that
predictive measurement cannot be properly performed. You should measure in
automatic operation mode or in some other mode instead.
Step
1
2
3
4
5
. . . . .
. . . .
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