ECOTEST MKS-05 TERRA Operating Manual page 52

Place the holder and the dosimeter in the position, where ambient DER from
is 8000 µSv/h.
Fix the initial DE value and simultaneously switch on the stop-watch.
Register the DE measurement results after 10 minutes (according to the stop-watch) of
irradiation, calculate the main relative error of measurement in percentage, and register the
values in the protocol.
The dosimeter is acknowledged to have passed the testing if the main relative error at DE
measurement does not exceed ±15 %.
3.2.4.5 Calculation of main relative error at surface beta-particles flux density
measurement
Calculate the main relative error at surface beta-particles flux density measurement
according to item 2.3.3.6 of the OM.
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