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3. OPERATING INSTRUCTIONS page 20
Model BM-286A
Efficiency:
This parameter entry represents the efficiency of the detectors, in percent, to the
source activity. This value is used in calculating the activity.
This value may be either entered manually or automatically calculated by the
BM-286A. Press on the white box and enter a value, or press "auto" to allow the
unit to calculate the efficiency.
1. Manual entry method:
Enter an efficiency in percent. Entering a <0> will disable the current waste I.D.
2. Automatic calculation:
The operator will be prompted for a count time (in seconds) and the calibration
source activity (in nanocuries).
Press "BEGIN" at which time a START button will appear.
Press the "START" button and the unit will then take an nn second background.
The operator will be prompted to place the source in the center of the chamber
and press "START" to accumulate an nn second count with the source in the
chamber.
The efficiency will be displayed in the efficiency window.