NETZSCH LFA 447 Nanoflash, Руководство по эксплуатации

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Operating the Instrument
LFA 447
TM
01/09 J:\LFA447\CHAPTER4.doc
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5. Prior to starting a measurement, it is necessary to change the gain and duration for each
sample at each temperature manually (up to software version 0.96c); please consider that the
maximum increase should be between 2 and 8 Volts – check this after the first shot, maybe
the following gain values can be used:
25 C -> 5012
100°C -> 623
200°C -> 315
300°C -> 155
These values are only a rough estimation and can differ depending on the sample dimension
and thermophysical properties; above 10 Volts, an overflow will be expected and the gain
value must be decreased
10 halftimes should be used for the duration time. For this, the maximum temperature rise
should be approx. at 2/5 of the total horizontal area displayed in the measurement window;
the duration can also be checked during the analysis (>Shot>Set range for calculation>10
Halftimes; see below)
Duration time is too long!