ECOTEST MKS-UM Operating Manual page 59

Table 2.5
Probe
BG probe
ABG probe
2.3.6.6.2.5 Beta radiation characteristics are measured as follows. After the
measurement starts, the LCD of the dosimeter displays measurement results and
estimated limits of statistical deviations of these results. Firstly, the estimated limits
of statistical deviations of measurement results are large. In the process of
measurement the estimated limits of statistical deviations of measurement results
decrease and eventually reach the specified limits of statistical deviations. After that,
the process of measurement continues, however a part of statistical information is
rejected. Therefore, all next measurement results come with estimated limits of
statistical deviations equal to or less than the specified ones.
At any moment in time, the user can restart the measurement process by
shortly pressing RAYS/RESTART.
The specified limits of statistical deviations can be determined by the
dosimeter automatically depending on the radiation intensity, or can be specified by
the user in the submode of the alarm threshold level programming.
A blinking "%" symbol shows that the specified limits of statistical deviations
have been set by the user.
"пп%" symbols are displayed on the LCD as long as the estimated limits of
statistical deviations exceed 99 %.
Annex B shows the dependence of the specified limits of statistical deviations
determined by the dosimeter on the radiation intensity, as well as approximate time
of statistical information accumulation necessary to obtain measurement results with
the estimated limits of statistical deviations, which are equal to the main relative
permissible error limit and the specified limits of statistical deviations determined by
the dosimeter. (Typical sensitivity of the counters, which is applied to the ABG/BG
probes, was used for charts plotting).
st
1 segment highlighted
2
0.312 kpart./(cm
2
0.035 kpart./(cm
All segments highlighted
·min)
145 kpart./(cm
·min)
190 kpart./(cm
57
·min)
2
·min)
2