- is an average value of the radiometer readings during external
gamma background measurement in µSv/h.
Calculate the main relative error of measurement in percentage.
Place the УПГД-3В carriage together with the radiometer in the position,
where DER from
137
Cs source is 8.0 µSv/h, and wait until the statistical error of DER
measurement results goes down to the value of not more than 10 %. Then register
five DER measurement results in the protocol with 5 s interval.
Calculate the DER value in µSv/h by the formula (3.1).
Calculate the main relative error of measurement in percentage according to
ДСТУ ГОСТ 8.207:2008.
Place the УПГД-3В carriage together with the radiometer in the position,
where DER from
137
Cs source is 80.0 µSv/h, and wait until the statistical error of
DER measurement results goes down to the value of not more than 10 %. Then
register five DER measurement results in the protocol with 5 s interval.
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