Hence, the measurement result can be used only for rough evaluation
of DER.
The steady point informs that the statistical error of the DER
measurement result is within the permissible range.
The main direction of the dosimeter during DER measurement is the
direction perpendicular to the front (rear) panel of the dosimeter.
DER measurement result is considered the arithmetic mean of five last
measurements in 8 min after the intensity of radiation field is changed at
DER levels in the range of 1.0 to 10.0 µSv/h, or within 2 min to 2 s for the
levels in the range of 10.0 µSv/h to 1.0 Sv/h.
Measurement intervals and subranges will be set automatically
according to the intensity of registered radiation.
Note. The process of data averaging can be restarted forcedly for quick
evaluation of DER. This is achieved by pressing and holding down the
THRESHOLD button until “CLr” symbols appear on the dLCD. Release
THRESHOLD as soon as symbols are displayed. Rough evaluation of DER
value will be performed within 1 min.
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