SAPHYMO MiniTRACE CSDF - Standard Calibration for Co-60 and Cs-137

Instruction Manual for MiniTRACE CSDF

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08/2012 Page 29

3 Standard calibration for Co-60 and Cs-137

A Co-60 plane source is used to calibrate the instrument in the factory. It is DKD certified and

meets DIN ISO 8769. The certificate and further details can be found in the appendix.

Each instrument is assigned its own calibration factor based on Co-60. This calibration factor

is calculated without the protective rubber casing. For more information see the calibration

certificate.

For calibration, the Co-60 source is positioned exactly 3 mm away from the grid.

Additionally, Cs-137 radiation exposure is also carried out on the MiniTRACE CSDF to calcu-

late the calibration factor for the ambient dose rate equivalent. For more information see the

calibration certificate.

Users can also conduct their own calibration, but will need the “MiniTRACE” user software

(see the separate software manual).

For the MiniTRACE CSDF, default calibration factors for different radionuclides are stored in

the instrument for the activity (Bq) and surface contamination (Bq/cm

2

) modes. See Table 6

and Table 7. These factors are not calculated for each instrument.

The calculation of the internal calibration factors for the displayed Bq/cm

2

unit is based on

ISO 7503-1. 4 π calibration is used for the Bq unit.

Note: Additionally individual user calibration factors can be set by MiniTRACE

software to adjust the calibration. For further information, see the separate

software manual.

SAPHYMO MiniTRACE CSDF - Standard Calibration for Co-60 and Cs-137

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