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Record the initial DE value and simultaneously switch on the stop-watch.
Read the DE measurement result after 10 minutes (according to the
stop-watch) of irradiation, subtract the DE initial value, calculate the main
relative error of measurement in percentage, and register these values in the
protocol.
The dosimeter is acknowledged to have passed the verification if the
main relative error during DE measurement does not exceed ±15 %.
3.2.4.5 Calculation of main relative error of surface beta-particles
flux density measurement
Prepare the dosimeter for photon-ionizing radiation DER measurement
and program 5 % value of the specified statistical error according to item
2.3.3.7 of the OM.
Wait until the statistical error of external background DER
measurement results goes down to the value of not more than 15 %.
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