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4 ENERGY CALIBRATION
The energy calibration is done with the aim to correct spectrometric tract
parameters, which tend to be changed during a device operation. The recommended
calibration intervals – not less than one every six months.
The energy calibration is based on the measurement of naturally occurring
40
isotope
K, which in most cases exists in the environment, with a subsequent
automatic recalculation of coefficients of the "VIRTUOSO" radiometer. To
perform a time-effective calibration procedure, it is recommended to use
potassium-containing substances. For example, purchase the so-called potassium
chloride fertilizer of 1 kg weight, which is available in hardware stores, garden
centers or nurseries specializing in fertilizers.
To perform calibration, enter the mode of gamma radiation dose rate
measurement, tap the "Menu" button on the Android device, and select the
"Settings" menu item. In the application settings window that opens, tap the
"Energy calibration" item in the "Calibration" category. Figure 4.1 illustrates the
window that will appear.
Figure 4.1 – Energy calibration
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