6
3 Technical specifications
Technical specifications are presented in Table 3.1.
Table 3.1
3.1 Operation modes:
- measurement of
- radiation density flux;
- measurement of
- radiation density flux;
- search for
- and
- sources;
- programming operation modes of BDAB
3.2 Sensitivity of BDAB to
- radiation (
239
Pu)
no less than 3.0 impulses
cm
2
3.3 Sensitivity of BDAB to
- radiation (
90
Sr+
90
Y)
no less than 2.0 impulses
cm
2
3.4 Energy limits range of
- particles flux density measurement
from 0.15 to 3.5 MeV
3.5 Energy dependence of BDAB sensitivity when measuring flux density of
- particles within the
range of 0.15 – 3.5 MeV energies shall differ from the typical dependence presented in Figure 3.1
no more than by
30 %.
0
1,3
1,2
1,1
1
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
500
1000
1500
2000
2500
3000
3500
E
max
Figure 3.1 – Typical dependence of BDAB sensitivity relative to
-radiation energy
3.6 Measurement range of
-radiation density flux
from 1.0 to 5∙10
5
min
-1
cm
-2
3.7 Permissible limits of main measurement error
of
- radiation flux density within range from 1.0
to 5∙10
5
min
-1
·cm
-2
, no more than
(20 + А/φ) %,
where А – coefficient equal to 10 min
-1
·cm
-2
;
φ – measured density of
- radiation flux
3.8 Measurement range of
- radiation flux density from 10.0 to 10
6
min
-1
·cm
-2
3.9 Permissible limits of main relative error of
-
radiation flux density within range from 10,0 to
10
6
min
-1
·cm
-2
, no more than
(20 + А/φ) %,
where А – coefficient equal to 100 min
-1
·cm
-2
;
φ
–
measured
density
of
β- radiation flux
3.10 In the search mode BDAB registers average count rate of
- radiation within 0.01 – 14
10
3
s
-1
range or
- radiation within 0.01 – 14
10
3
s
-1
. If count rate exceeds the upper limit of the
measurement range, the “OVL” message will be displayed by Spectroscopic Radiation Monitor
РM1403 / Display and Control Unit PM1403 or PC.