BNC 971 Food-SSAFE Analysis Kit - Manual (Page 6)

Food-SSAFE Operation Manual Page 7 of 20
f. Tap the green circle “GO” icon (or UTIL|Start
Acquisition) along the bottom of the screen to begin
analyzing a sample. The Sample Data screen will be
displayed. Enter the acquisition time desired (default is
900 seconds or 15 minutes).
Select the appropriate sample matrix--SOIL, WATER, or
FILTER--and the relevant sample geometry—
MARINELLI or DISK.
Note: The Food-SSAFE comes calibrated for water and
soil in a (nominal 500 mL) Marinelli geometry plus a 2”
filter in a disk geometry.
Enter the quantity of the sample and units (e.g.,. 0.7 liters, 0.540 kg, etc.).
Three more fields are available: Location, Description,
and ID. These can be used for whatever purpose makes
sense to your program or the fields can be left blank.
Check the box next to Auto save spectrum file to have
the spectrum automatically saved at the end of the
acquisition.
If a background file has been loaded, the Calculate
Statistics… button can be pressed to determine the MDA
(total Bq) and LLD (activity/quantity, e.g. Bq/liter or
Bq/Kg) to ensure that the sample analysis can meet the
statistical target.
g. Tap the OK button to begin the acquisition. The main
screen will be displayed with the data updated approximately each second.
h. Once the acquisition time has been met (or if the
acquisition is terminated by either tapping the “STOP”
icon, or using Util|Stop Acquisition, along the bottom of
the screen), an analysis of the spectrum will be performed
and the report screen will be opened. Use the scroll bars
to see the complete report. Tap the Save… button to save
to a text file. Reports are not saved unless explicitly
directed.