Bnc 971 Food-SSAFE Analysis Kit Manual de usuario descargar pdf (Pagina 4)

Food-SSAFE Operation Manual Page 5 of 20

b. The Automatic Gain Stabilization screen will be

displayed. The software will collect a spectrum until a

sufficient number of counts exist to determine a

statistically reliable peak center. If not within a few

channels of the expected location the fine gain will be

adjusted in the appropriate direction and an additional

count started.

Displayed information includes the channel at which the

K-40 peak is expected; the original fine gain setting; the

centroid of the current peak; the current fine gain setting;

the current peak height at the centroid; and the time

elapsed in the current spectrum.

c. Once the software is satisfied with the location of the peak, the Automatic Gain

Stabilization window will close and the K-40 source check will continue on the main

screen. Allow this acquisition to continue until complete.

d. When the source check is complete a message will

display showing the observed count rate for the source,

the limits (±10% by default), and whether the test was

passed or not.

Acknowledge the message by tapping ok and the system

is ready to begin analyzing samples.

e. Use File|Save Spectrum to save a copy of the spectrum

if desired.

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Bnc 971 Food-SSAFE Analysis Kit Manual de usuario Pagina 4