ECOTEST PRD GUARDER DKG-24 Operating Manual page 7

Table 1.1 (continued)
Specification
Main relative permissible error limit
when measuring photon ionizing
radiation DE with a confidence
probability of 0.95 (
Energy range of photon ionizing
radiation being detected
Energy dependence of the device
readings when measuring photon
ionizing radiation DER and DE in the
energy range from 0.05 MeV to
3.00 MeV relative to the energy of
137
0.662 MeV (
Anisotropy for HSSDU and LSSDU
detectors when gamma radiation falls on
them in directions at angles from + 60 to
o
minus 60 in the horizontal and vertical
planes relative to the main measurement
direction, marked with "+" symbol,
should not exceed:
137
- for isotopes
241
- for Am isotopes
Time of operating mode setting of the
device, no more
Calibration time by gamma background
level
The response time to over ten-fold chan-
ge in photon ionizing radiation DER
Rated supply voltage of the device from
two galvanic cells (AA):
- lithium and alkaline
- nickel metal hydride batteries
- from the USB port
137
Cs)
Cs)
60
Cs and Co
Unit of
measure
%
MeV
%
%
min
s
s
V
5
Standardized
values
15
from 0.02
to 10.0
±25
30
75
1
from 10 to
90
0,25
3,0
2,4
5,0