LB 124 Scint 8. Basis of Calculation
85
Procedure
1. Choose the CPS measurement mode.
2. Place the hand-held probe upon the calibrating source in
such a manner that it covers the source well, in order to
loose as little activity as possible.
3. Measure the calibrating source for a measuring period of at
least 10 seconds (in compliance with the table dealing with
statistical measuring accuracy on page 7-3).
4. Calculate the constant K using the formula given above.
5. Enter the determined calibration factor in one of the free en-
try positions B1 or B2
The included test sources cannot serve as calibrating
sources. They are point sources and can therefore not be
used for the calculation of surface activities.
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