Angioscan Electronics RADIASCAN-501 User manual

"ANGIOSCAN-ELECTRONICS" LLC
RADIOACTIVITY INDICATOR
RADIASCAN-501(701)
OPERATIONS MANUAL

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C O N T E N T S
1DESCRIPTION AND OPERATION OF INDICATOR RADIASCAN-501(701).............................. 4
1.1 Purpose and Scope of Application............................................................................................4
1.2 Specifications............................................................................................................................4
1.3 Radiation registration method .................................................................................................5
1.4 Exterior appearance of the product .........................................................................................6
1.5 Indicator operating modes .......................................................................................................7
1.6 Displaying and alarm ................................................................................................................8
1.7 Elements of Graphical Interface...............................................................................................9
1.8 Event log .................................................................................................................................16
2SETTING UP THE DEVICE................................................................................................ 17
2.1 General principles...................................................................................................................17
2.2 Information on the Product....................................................................................................17
2.3 Restoring the factory settings ................................................................................................17
2.4 Language of the interface.......................................................................................................17
2.5 Setting the date ......................................................................................................................17
2.6 Setting the time ......................................................................................................................18
2.7 Setting the Time Zone ............................................................................................................18
2.8 Enabling/Disabling Daylight Saving Time ...............................................................................18
2.9 Setting the display contrast....................................................................................................18
2.10 Automatic shutdown of the display ...................................................................................18
2.11 Enabling/Disabling the sound.............................................................................................18
2.12 Enabling/Disabling particular sounds.................................................................................18
2.13 Testing alarm signals ..........................................................................................................19
2.14 Control of LEDs ...................................................................................................................19
2.15 Automatic enabling/disabling the device by the schedule ................................................19
2.16 Parameters of GAMMA mode ............................................................................................19
2.17 Setting conduct of measurements by schedule .................................................................21
2.18 Parameters of SEARCH mode .............................................................................................22
2.19 Parameters of BETA mode..................................................................................................22
2.20 Parameters of ALPHA mode ...............................................................................................23
2.21 Parameters of DETECTION mode .......................................................................................23
2.22 Event Log parameters.........................................................................................................24
3CONDUCT OF MEASUREMENTS ..................................................................................... 25
3.1 Operational restrictions and safety measures .......................................................................25
3.2 Preparation to work ...............................................................................................................25
3.3 Order of activation of the Indicator .......................................................................................25
3.4 Procedure for switching off the Indicator ..............................................................................25
3.5 Order of connection to USB ...................................................................................................25
3.6 Order of disconnection from USB ..........................................................................................26
3.7 GAMMA mode........................................................................................................................26
3.8 SEARCH mode.........................................................................................................................26
3.9 BETA mode (only for RadiaScan-701).....................................................................................27
3.10 ALPHA mode (only for RadiaScan-701) ..............................................................................27
3.11 DETECTION mode ...............................................................................................................28
4PACKAGE ...................................................................................................................... 29
5TRANSPORTATION AND STORAGE................................................................................. 29
6MAINTENANCE ............................................................................................................. 29
6.1 Safety measures .....................................................................................................................29

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6.2 Maintenance procedure.........................................................................................................29
7INFORMATION ABOUT THE DEVELOPERS ...................................................................... 30

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1DESCRIPTION AND OPERATION OF INDICATOR RADIASCAN-501(701)
1.1 Purpose and Scope of Application
Portable stand-alone radioactivity indicator RadiaScan-501(701) (hereinafter referred to as the
Indicator or product) is intended to alert the user of potential radiation hazard of the
surrounding area, or individual items.
The Indicator is designed for:
assessment of current radiation situation;
assessment of the level of radiation by magnitude of ambient dose rate (hereinafter
referred to as the dose rate) of photon (gamma and X-ray) radiation;
assessment of integral ambient dose (hereinafter referred to as the dose) of photon
radiation;
assessment of statistical error of each measurement in confidence interval 0.95;
issuing alarm signals when the background radiation exceeds the defined thresholds;
assessment of the beta particles flux density (only RadiaScan-701);
assessment of alpha particles flux density (only RadiaScan-701);
search of radiation contaminated areas and objects.
1.2 Specifications
RadiaScan-501(701) has the specifications shown in Table 1.
Table 1
Parameter
Value
Dose indication range , mSv
from 0,001 to 1000
Dose rate indication range, µSv/h
from 0,01 to 10000
Range of photon energies, MeV
from 0,05 to 3,0
*beta particles flux density indication range (by 90Sr),
part/(cm2·min)
from 5 to 3·104
*lower threshold of energy of registered beta-radiation (by
medium energy of beta-spectrum 14C), MeV, not more than
0,05
*alpha particles flux density indication range (by 239Pu),
part/(cm2·min)
from 5 to 3·104
Operating mode setting time, min, not more than
1
Amount of dose thresholds for issuing alarm signals
2
Range of values of dose thresholds , mSv
from 0,001 to 999,999
Amount of thresholds of dose rate for issuance of alarm signals
2
Range of values of dose rate thresholds, µSv/h
from 0,1 to 9999,9
Time of assessment of photon radiation dose rate, sec
from 1 to 30
*Range of values of thresholds of beta particles flux density,
part/(cm2·min)
from 1 to 29999
*amount of thresholds of beta particles flux density for issuance
of alarm signals
2
*Range of values of thresholds of alpha particles flux density,
part/(cm2·min)
from 1 to 29999
*amount of thresholds of alpha particles flux density for issuance
of alarm signals
2
Connection with computer
USB
Log volume, amount of records, not less than
2000

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Parameter
Value
Powered from USB
Available
batteries
2 (accumulator cells or
batteries) of type AAA
Duration of contibuous operation at the background of less than
0,30 µSv/h and display contrast level 50%, not less than, h:
From 2 alcaline batteries
10
When powered from USB
unlimited
Total voltage of batteries, V
from 1,9 to 3,2
Possibility for charging accumulator cells
No
Means of indication
Color OLED display, LEDs,
buzzer
Current consumed from USB, mА, not more than
500
Current consumed from batteries at deactivated USB:
Indicator is off, µA, not more than
5
Indicator is on, µA, not more than
500
Reverse current of batteries at activated USB, Indicator µA, not
more than
100
Work temperatures range, °C
from minus 20 to +50
overall dimensions, mm
110x60x23
Weight without batteries, g, not more than
110
*only for RadiaScan-701.
1.3 Radiation registration method
1.3.1 Radiation detector
Terminal Geiger-Muller counter is used in the Indicator as radiation detector. The flux of
photons of gamma and X-ray radiation, flux of alpha particles and beta particles are converted
by the detector into the sequence of electrical signals. These signals are formed by duration
and amplitude, and then are delivered to microprocessor registration circuit which provides
automatic processing and displaying the measurement results.
1.3.2 Displaying of measuring data on the display
Depending on the selected measurement mode, the display shows:
averaged numerical value of the dose or dose rate with indication of units of
measurement;
averaged numerical value of beta-particles flux density with indication of units of
measurement;
averaged numerical value of alpha particles flux density with indication of units of
measurement;
time from the beginning of the current measurement;
graphic representation of measured value and user defined alarm thresholds;
current statistical measurement error in confidence interval of 0.95;
current alarm level;
current time or date;
prompts, if measurement technique requires any additional actions by the user.

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1.3.3 Signal of registration of particles
The indicator makes sound signals (clicks) on registration of photons, or particles of ionizing
radiation. The higher is the level of radiation, the higher is the average frequency of clicks.
These signals can be disabled using the settings of the Indicator.
1.3.4 Alarm signals
When any alarm threshold is exceeded the Indicator makes a corresponding sound. Alarm
signals can be disabled using the settings of the Indicator.
1.4 Exterior appearance of the product
Appearance of the front side of RadiaScan-501(701) is shown in Fig. 1.
1 –USB slot
2 –LEDs
3 –OLED display
4 –"Power" button –Indicator power supply
on/off
5 –"Up" button
6 –"Left" button
7 –"Down" button
8 –"Menu" button
9 –"Right" button
Fig. 1 Appearance of the front side of RadiaScan-501(701)
Appearance of the rear side of RadiaScan-501 is shown in Fig. 2.
1 –mark of the center of the detector
2 –cover of the battery compartment
Fig. 2 Appearance of the rear side of RadiaScan-501

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Appearance of the rear side of RadiaScan-701 with installed filter-cover is shown in Fig. 3.a,
with removed cover –Fig. 3.b.
1 –Removable filter-cover
2 –marks of the axis of the detector
3 –detector window
4 –mark of the metal filter
5 –mark of the filter without metal
6 –cover of the battery compartment
Fig. 3 Appearance of the rear side of RadiaScan-701
Removable cover can be installed in one of two positions, at which:
detector window is covered with metal filter, as shown in Fig. 3.a;
detector window is covered with the filter without metal.
1.5 Indicator operating modes
Setting of the Indicator is done in setting mode. To evaluate the level of radiation, automatic or
manual measurements are used.
Measurements in automatic modes will start immediately after their activation in the main
menu of setting modes. Measurements are made continuously and are completed with the
activation of another measurement mode. Automatic modes are:
Mode for constant control of gamma-radiation (hereinafter referred to as GAMMA
mode);
radiation sources search mode (hereinafter referred to as SEARCH Mode).
GAMMA is the main mode. The indicator switches to this mode after switching on.
Measurements in manual modes start only after the user presses the corresponding button,
they are stopped either automatically or upon pressing of a button. Manual modes are:
Mode of evaluation of beta particles flux density (hereinafter referred to as BETA mode)
–only for RadiaScan-701;
Mode of evaluation of alpha particles flux density (hereinafter referred to as ALPHA
mode) –only for RadiaScan-701;
Radiation sources DETECTION mode (hereinafter referred to as the DETECTION mode).
1.5.1 GAMMA mode
It is intended for assessment of cumulative dose and dose rate of the current level of gamma
and X-ray radiation.
This is the basic mode of operation. It is activated immediately after the Indicator switching-on.
The graphical interface of the mode, setting of parameters and order of use are described in
chapters 1.7.1, 2.16. и3.7 correspondingly.

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1.5.2 SEARCH mode
The mode is used for search for sources of radiation on the area by moving the Indicator above
the surface being examined and for defining areas with the highest readings. This mode is much
more responsive to changes in radiation background compared to GAMMA mode, but due to
significant decrease in the accuracy of readings.
The graphical interface of the mode, setting of parameters and order of use are described in
chapters 1.7.2, 2.18 и3.8 correspondingly.
1.5.3 BETA mode
The mode is intended for assessment of beta-particles flux density by two measurements.
Measurements are taken over long intervals of time (from several minutes to several hundred
minutes). Duration of one measurement can be limited explicitly or implicitly by specifying the
required level of statistical error.
The graphical interface of the mode, setting of parameters and order of use are described in
chapters 1.7.3, 2.19 and 3.9 correspondingly.
1.5.4 ALPHA mode
The mode is intended for assessment of alpha particles flux density by two measurements.
Measurements are taken over long intervals of time (from several minutes to several hundred
minutes). Duration of one measurement can be limited explicitly or implicitly by specifying the
required level of statistical error.
The graphical interface of the mode, setting of parameters and order of use are described in
chapters 1.7.4, 2.20 and 3.10 correspondingly.
1.5.5 DETECTION mode
The mode is used to detect the fact of radioactive contamination of the surfaces of objects,
food products, and other objects, by two measurements. Measurements are taken over long
intervals of time (from several minutes to several hundred minutes). Duration of the
measurement can be limited explicitly or implicitly by specifying the required level of statistical
error.
The graphical interface of the mode, setting of parameters and order of use are described in
chapters 1.7.5, 2.21 и3.11 correspondingly.
1.6 Displaying and alarm
To display the special statuses of the Indicator and specific events recorded by it, LEDs, buzzer
and display are used. With the help of these means the Indicator gives the following signals to
the user:
1.6.1 Signal of LED explicit power on/off
In this case, the green LED lights up for 2 seconds once, and goes out.
1.6.2 Signal of LED passive state at presence of power supply at USB-slot
Green LED generates short pulses of minimum brightness with the frequency of 1 pulse per
4 seconds. In this state, the Indicator does not perform any measurements and is waiting for
explicit or implicit power-up.
1.6.3 Signal of LED implicit switching on
If the Indicator is off, then for conduct of measurement by schedule it may switch on implicitly,
and green LED generates short pulses with minimum brightness at the frequency of 2 pulses
per second.

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1.6.4 Battery discharge signal
Upon detection of excessive battery discharge the Indicator delivers the following signals with
the frequency of 2 times per second:
red LED lights up and goes out;
buzzer emits short tone signals;
low battery symbol lights up and goes out on the display.
These signals are issued for 30 seconds or until the user presses any button, then the Indicator
turns off.
1.6.5 Signal of registration of alpha, beta particles and photons of ionizing radiation
Upon a photon or particle registered by the detector:
1. LEDs form a light pulse:
green, if none of the alarm thresholds is exceeded;
red, if at least one alarm threshold is exceeded or radioactive contamination was
detected in DETECTION mode;
2. The buzzer makes a click.
1.6.6 Signal of manual measurements start / ending
The buzzer emits a short single tone signal.
1.6.7 Alarm signals
Upon exceedance of any of the thresholds of the current measurement mode, or upon
detection of radioactive contamination in DETECTION mode, the buzzer emits a particular (for
each type of alarm) sequence of tone signals.
1.7 Elements of Graphical Interface
Graphical interface of the Indicator is represented by the following screens:
measurement modes screens;
menu screens;
settings screens (dialogues);
tip screens (prompts).
The screens are divided into zones. In the top part of the display there is the line of header of
the screen (hereinafter referred to as the header), at the bottom there are one or two message
bars. Between the header bar and message bar there is the screen work area where the
measurement results, menu, dialogues elements and background information are displayed.
1.7.1 GAMMA mode screen.
In GAMMA mode the screen looks as shown in Fig. 4.
1 –screen header
2 –screen work area
3 –message bar
4 –icons, representing the type of displayed readings
5 –statistical error of the measured value
6 –measurement units
7 –meaning of the measured value
8 –analog indicator
Fig. 4 GAMMA mode screen

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Header
In gamma-radiation control mode the screen title has the following elements (listed from the
left to the right):
1. time/date display field (current time is displayed by default, and when pressing and
holding "Right" button –current date is displayed) –time format: "HH:MM:SS", date
format: "DD:MM:YYYY";
2. The degree of filling of the log memory is displayed by the following icons:
icon –active, if there are less than 17% pages open in the log;
icon –active, if there are from 17 to 33% pages open in the log;
icon –active, if there are from 33 to 50% pages open in the log;
icon –active, if there are from 50 to 67% pages open in the log;
icon –active, if there are from 67 to 83% pages open in the log;
icon –active, if there are from 83 to 98% pages open in the log;
icon –active, if the last page of the log is open;
icon –inactive, if the log is fully filled;
3. icon –active, if schedule-based Indicator operation mode is allowed;
4. icon –active, if LED indication is allowed;
5. icon –active, if sound indication is allowed;
6. state of power supply source is indicated as follows:
–the battery is fully discharged;
–the battery is discharged;
–the battery is charged;
–powered from USB, connection with computer is not set;
–powered from USB, connection with computer is set.
Work area
On the left side of the screen there are two icons showing the type of displayed readings:
If icon is active, the dose rate of gamma radiation is displayed;
If icon is active, the integral dose of gamma radiation is displayed.
If "Down" button is pressed, the integral dose is displayed, otherwise the dose rate is displayed.
Large digits (see. Fig. 4, field 7) show the numerical value of the dose or dose rate. If the
statistical error is greater than ±50% (value is not valid), gray dashes are displayed instead of
the numbers. Values below the first threshold are shown in green. Values higher than the first,
but lower than the second threshold are shown in yellow, values above the second threshold
are shown in red.
Along with value (of dose or dose rate), the screen displays the corresponding statistical error
(field 5), and measurement units (field 6).
At the bottom of the screen the measured value is displayed on analog display with logarithmic
scale. One indicator scale division corresponds to tenfold change of displayed value. Green,
yellow and red areas correspond to the levels of alarm.