Atomtex AT2522 User manual

Scientific and Production Unitary Enterprise
АТ2522
RADIATION DETECTOR
(ALPHA SENSOR)
User's Manual
Contents
1Description and operation3
1.1 Purpose3
1.2 Specifications4

1.3 Complete set6
1.4 Description and operation7
1.5 Marking8
1.6 Packaging8
2Pre-start procedure9
2.1 General information9
2.2 Power ON and OFF9
2.3 Charging the battery9
3Intended use10
3.1 General information10
3.2 Standard use10
3.3 Using the “AlphaSensor” program12
4Maintenance19
5Storage20
6Transportation21
7Disposal21
8Acceptance certificate22
9Packing list22
10 Commissioning certificate23
11 Manufacturer's warranty23
12 Claim information24
Appendix A Replacement of the light protection film.26
The purpose of this User's Manual is to explain the operation principle and design of
AT2522 Radiation detector (Alpha sensor) (further referred to as alpha sensor). It contains
main specifications andotherdata to providecorrect and fully-functional operation of alpha
sensors.
The following abbreviations are used throughout this User's Manual:
PC
–
Personal computer
SW
–
Software.

1Description and operation
1.1 Purpose
2Alpha sensor is an indicator of radioactivity and is designed for quick
assessment of surface contamination by alpha nuclides, i.a. polonium-210.
3Alpha sensor belong to the type of portable devices and is suitable for radiation
control professionals as well as for individuals interested in radiation situation atworkplace,
living and recreation areas, as well as for training purposes.
4Operating conditions:
−Ambient air temperature
From −20 °C to +50 °C
−
Relative humidity with air temperature ≤35 °C
without condensation
≤95 %
−
Atmospheric pressure
From 84 to 106.7 kPa.
5IP40 protection rating against ingress of water, dust and foreign particles
according to GOST 14254-2015.
6Meets electrical safety requirements of GOST IEC 61010-1-2014 for Class III
equipment according to GOST 12.2.007.0-75 (Pollution degree 2).
7Alpha sensor cannot be operated in explosion hazard zones.

7.1 Specifications
8Alpha sensor triggers audio, vibration and visual alarm in case of detection of
surface contamination by alpha-active radionuclides.
9Detection time of surface contamination of 0.1 Bq/cm2does not exceed 1 s.
10 Initialization time does not exceed 5 s.
11 Electric power supply is provided by a built-in rechargeable battery.
12 Time of continuous operation with fully-charged battery is at least 500 h when
the display is OFF, and at least 40 h when the display is ON.
13 Alpha sensor survives the following conditions:
−Ambient air temperature from –20 °C to +50 ºС
−Relative air humidity up to 95 % (non-
condensing, ≤35 °C)
−Atmospheric pressure from 84 to 106.7 kPa
−Sinusoidal vibration in the frequency range from
10 Hz to 55 Hz and shift amplitude of 0.35 mm
−Constant magnetic fields and alternating fields of
network frequency with intensity of up to 400 A/m.
14 Alpha sensor in transport packaging survives the following conditions:
−Ambient air temperature from –20 °C to +50 ºС
−Relative air humidity up to 100 % (at 40 °C)
−Impacts with acceleration of 98 m/s2(10g), where impact
duration is 16 ms and the number of shocks is (1000 ± 10)
in each of three mutually perpendicular axes.
15 The weight does not exceed 0.17 kg.
16 Overall dimensions does not exceed 106×60×31 mm.
17 EMC compatibility requirements of STB GOST R 51522-2001:
−Electromagnetic emission requirements of
STB ЕN 55011-2012 (Group 1)
−Immunity to electrostatic discharge conforms to
requirements specified in GOST 30804.4.2-2013,
test level 2 (contact discharge) and test level 3 (Air
discharge), performance criterion A
−Immunity to radio-frequency electromagnetic field of
STB IEC 61000-4-3-2009, test level 2 and performance
factor A.

18 Index of reliability:
−
Mean time to failure
≥10000 h
−
Mean operating life
≥10 years
−
Mean time to recover
Up to 1 h.
19 Alpha sensor contains no precious materials or non-ferrous metals.

19.1Complete set
20 Contents of delivery kit are listed in Table 1 .1.
Table 1.1
Name, type
Serial
Number Q-ty Note
1АТ2522 Radiation detector
(Alpha sensor)
1
2USB-microUSB cable
1
3Set of spare light-protection films
1
5
4“AlphaSensor” Software
1
On external
media
5User's Manual
1
Including
Software
User’s
Manual

20.1Description and operation
20.1.1Operating principle
The principle of alpha sensor’s operation is based on the detection of alpha particles
emitted from the tested surface by ZnS(Ag) scintillation detector with dimensions of
55×45×1 mm.
20.1.2Design
See Figure 1 .1 for general view of Alpha sensor.
Figure 1.1
Alpha sensor consists of housing and removable protection plate which covers the
detector. A display is located on the front face of the housing.
A USB connector for charging the built-in battery and for connecting the alpha
sensor to a PC is located on the end face of the housing.

20.2Marking
21 Marking labels are generated automatically by dedicated software.
22 The end face marking is made by a film label with adhesive layer and has the
following information:
−Name and designation of alpha sensor
−Serial number
−Manufacturing year
−Manufacturer's trademark
−“Made in Belarus” caption.
23 Marking of packaging complies with requirements in GOST 14192-96 and
design documentation.
24 Main, additional and informational signs are made typographically.
24.1Packaging
25 The packaging is a box with alpha sensor and supplied accessories inside.

26 Pre-start procedure
26.1
General information
27 Read this User's Manual thoroughly before the start of alpha sensor operation.
28 Remove the alpha sensor and accessories from the packaging box.
29 Check the list of standard equipment of the alpha sensor according to 19.1.
30 Perform visual inspection of alpha sensor and its accessories:
−Make sure there is no visible mechanical damage
to housing
−Make sure the USB-microUSB cable is operable
and marking text is legible.
30.1Power ON and OFF
31 Alpha sensor powers on automatically when the protective plate is removed
and powers off when the protective plate is reattached to the housing.
31.1Charging the battery
32 In normal conditions the built-in battery can be charged by the USB-microUSB
cable from the delivery set connected to a USB port of a PC.
33 Charge the built-in battery while the alpha sensor is powered off.
Displaying the “ ” icon indicates that the battery is charging, while the “ ”
icon indicates that the battery charging process is over. Then the alpha sensor goes to trickle
charge mode and can remain in it for quite a long time.
Note: Regular continuous or permanent operation with fully charged
battery when alpha sensor is connected to external power supply can result
in battery degradation and then to early failure. For this reason it is
recommended to remove external power source when the battery is full.
In order to restore capacity of the battery including after a long period of storage it
is necessary to perform the “full charge – full discharge” cycles two or three times.
Charging time of an empty battery is about 3 h.

34 Intended use
34.1
General information
35 Exercise caution during operation of the alpha sensor. Carefully protect it from
bumps and drops.
36 Operate the alpha sensor with caution to avoid damage to the light protection
film; otherwise it results in alpha sensor’s malfunction. Damaged films can be replaced by
User according to instructions in Appendix A.
37 Take care not to contaminate the alpha sensor by radioactive material during
use. It is possible to check the alpha sensor for radioactive contamination in the following
sequence:
−Remove the protective plate and put the alpha
sensor on a clean sheet of paper
−Absence of audio and visual alarm is the
indication of no contamination of alpha sensor. If an alarm
has been activated, then it is necessary to perform alpha
sensor’s deactivation as described in 42.
37.1
Standard use
37.1.1Quick assessment of surface contamination by alpha-emitting radionuclides is
the representative means of assessing dangers from surfaces contaminated by radioactive
materials as a source of subsequent internal irradiation.
37.1.2Surface contamination by alpha-emitting radionuclides can be assessed in
places of work with open sources of ionizing radiation as well as in premises with a
possibility of contamination by transportation of radioactive substances on various objects
(tools, overalls and shoes) or by flowing air. Select the place for assessment of surface
contamination by alpha-active radionuclides based on the analysis of previous data on
premise contamination and information on potential transfer of radioactive substances to
these premises.
37.1.3Perform assessment of surface contamination by alpha-active radionuclides in
the following sequence:
−Remove the protection plate from alpha sensor
−Put the alpha sensor on the surface which is
assumed to be contaminated by radioactive material
−Wait about 5 s. Absence of audio and visual
alarm is the indication of no contamination.
−Move the alpha sensor to the next point.