SAPHYMO MiniTRACE CSDF

Instruction Manual for MiniTRACE CSDF

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08/2012 Page 13

2.4.3.5 Measurement of surface contamination

2.4.3.5.1 Measurement of the activity in Bq

With this menu you can check the contamination of a surface, for example, based on a 4 π-

calibration.

Select the “BQ” menu by using the mode button. Once “BQ” is displayed, wait three seconds.

You can select the radionuclide you would like to measure by pressing the mode button.

After additional three seconds, the display will indicate whether an alarm threshold has been

activated for the activity measurement. Then the measurement starts automatically. For

further details see Figure 3. The activity is given in “Bq”. See also 2.4.3.3, 2.4.3.5.32.4.3.5.4.

You can select the following radionuclides with the built-in calibration factors (4 π-

calibration):

• Am-241

• C-14

• Cl-36

• Co-60

• Cs-137

• Sr-90

• U-238

• User (see below)

If you would like to select another radionuclide, press the mode button once, wait three

seconds, and then select the radionuclide. The display will indicate whether an alarm

threshold has been activated for the activity measurement. The measurement will then start

automatically.

You can assign your own calibration factor for the radionuclide “User” using the software. For

further information see the software manual.

Note: MiniTRACE CSDF can not determine the radionuclide. Selection of the

radionuclide has to be done by the user.

2.4.3.5.2 Measurement of surface contamination in Bq/cm

2

With this menu you can check the contamination of a surface, based on ISO 7503-1

calibration. The measurement of the surface contamination can be done in two different

ways. For more information see Chapters 2.4.3.5.3 and 2.4.3.5.4.

Select the “BQCM2” menu using the mode button. Once “BQCM2” is displayed, wait three

seconds. You can then select the radionuclide you would like to measure by pressing the

mode button. After an additional three seconds, the display will indicate whether an alarm

threshold has been activated for the activity measurement. The measurement will then start

automatically. For further details see Figure 3. Activity is given in Bq/cm

2

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SAPHYMO MiniTRACE CSDF - Page 13

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