Mirion Technologies ACCURAD PRD User manual

DOC012721EN-D
AccuRad PRD
Personal Radiation Detector
User’s
Manual

AccuRad PRD
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AccuRad PRD
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CAUTION:
The AccuRad PRD is not certified for explosive atmospheres!

Revision Log AccuRad PRD
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Revision Log
Ind.
Date
Verified by
Approved by
Origin and description of
revision
Revised
pages
A
2019-11
D. LE BRAS
P. TALENT
Document creation
/
B
2020-11
P. TALENT
T. VIDAL
DEVN 40052
Applicable up to firmware V1.3
§3.2.1, Edited hardware overview
§3.3, Edited detectors paragraph
§3.4, Edited smart app overview
§3.5, Added Management center
§4.6, Added pairing with NFC
§4.7, Added standby/wakeup
§5.2.1, Edited Using Trend screen
§5.3, Edited Using in alarm
§5.4.3.1, Edited Using radar
§6, Edited Settings chapter
§6.1.2, Edited Behavior paragraph
§6.2.5, Added Saturation paragraph
§6.5, Edited Bluetooth paragraph
§6.7.2, Edited Radar calibration
§7, Added Management Center
§8.2, Edited troubleshooting
§9, Edited Specifications
§10.1, Added Appendix 1
§10.2, Edited Appendix 2
§10.4, Added Appendix 4
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Ind.
Date
Verified by
Approved by
Origin and description of
revision
Revised
pages
C
2021-04
C. FOURCADE
P. TALENT
DEVS 40705
Applicable up to firmware V1.4
§3.2.2, Added dark mode
§4.1, Edited battery insertion
§4.2, Edited first use procedure
§4.4, Edited Use summary
§4.5.3, Edited using earphones
§4.8, Edited AccuRad power-off
§5.2, Edited Detection mode
§5.4.2, Edited Search mode use
§5.4.2.1, Edited radar use
§5.78, Edited Update background
§6.1.2, Edited behavior settings
§6.7.2, Edited Radar calibration
§6.7.4, Edited change PIN
§6.7.5, Added dose history
§7, Edited AccuRad Management
Center chapter
§8.1, Added Recommendations
§8.2, Edited Troubleshooting
§9, Updated specifications
§10.1, Edited Appendix 1
§10.2, Edited Appendix 2
Various screenshots updated
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109-111
D
2022-02
N.CANOLLE
P.TALENT
DEVN 41383
Applicable up to firmware V1.5
§7, added a firmware update
procedure for AccuRad simulators +
a calibration procedure
§9, updated measurement
specifications
§10.4, updated calibration
recommendations
Various small corrections and
screenshots updated
78-82
91
120
P.TALENT

Table of Contents AccuRad PRD
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Table of Contents
1. Introduction....................................................................................................................9
2. Advantages ..................................................................................................................11
3. AccuRad PRD description ..........................................................................................13
3.1 What’s in the box........................................................................................................... 13
3.2 AccuRad PRD overview................................................................................................ 14
3.2.1 Hardware overview .......................................................................................... 14
3.2.2 User interface overview.................................................................................... 16
3.3 Detectors....................................................................................................................... 17
3.3.1 Wearing the AccuRad PRD.............................................................................. 18
3.4 AccuRad App overview ................................................................................................. 19
3.5 AccuRad Management Center...................................................................................... 20
4. Using AccuRad PRD....................................................................................................21
4.1 Battery insertion............................................................................................................. 21
4.1.1 Charging NiMH batteries.................................................................................. 22
4.2 First use of the AccuRad PRD....................................................................................... 22
4.3 Start the AccuRad PRD................................................................................................. 23
4.3.1 Calibration expired ........................................................................................... 23
4.4 Use Summary of the AccuRad PRD.............................................................................. 24
4.4.1 Detection Mode Operation Summary............................................................... 24
4.4.2 Search with Radar Mode Operation Summary................................................. 25
4.5 Discreet mode overview................................................................................................ 26
4.5.1 Switching to discreet mode .............................................................................. 26
4.5.2 Disabling discreet mode................................................................................... 26
4.5.3 Using earphones.............................................................................................. 27
4.6 Pairing the AccuRad PRD to a smartphone with NFC .................................................. 28
4.7 Standby / Wakeup the AccuRad PRD........................................................................... 28
4.8 Powering off the AccuRad PRD .................................................................................... 29
5. AccuRad PRD advanced usage..................................................................................31
5.1 Main menu overview...................................................................................................... 31
5.2 Using AccuRad in Detection Mode................................................................................ 32
5.2.1 Using the Trend screen.................................................................................... 33
5.3 Using AccuRad PRD in Alarm....................................................................................... 34
5.3.1 AccuRad PRD behavior ................................................................................... 34
5.3.2 Alarm Indication general behavior.................................................................... 34
5.3.3 Acknowledging visual and sound alarms......................................................... 35
5.3.4 Recommended Alarm Actions.......................................................................... 35
5.3.5 High background alarm.................................................................................... 35
5.4 Using AccuRad PRD in Search mode........................................................................... 36
5.4.1 Activating the Search Mode ............................................................................. 36
5.4.2 Using the Search mode.................................................................................... 36
5.4.3 Stopping the Search Mode............................................................................... 40
5.5 Analyzing AccuRad PRD alarm history data ................................................................. 41

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5.5.1 Accessing alarm history data............................................................................41
5.5.2 Sending Alarm History Data to a Remote Monitoring Station...........................42
5.6 Dose...............................................................................................................................42
5.7 Update background (BKG).............................................................................................43
6. AccuRad PRD settings................................................................................................45
6.1 Display ...........................................................................................................................46
6.1.1 Units..................................................................................................................46
6.1.2 Behavior............................................................................................................48
6.1.3 Language..........................................................................................................49
6.2 Alarms............................................................................................................................49
6.2.1 Alarms Thresholds for Dose Rate & Count Rate ..............................................50
6.2.2 High background alarm.....................................................................................50
6.2.3 Low...................................................................................................................51
6.2.4 High/Danger......................................................................................................52
6.2.5 Saturation .........................................................................................................53
6.2.6 Dose .................................................................................................................54
6.3 Indicators........................................................................................................................54
6.3.1 Discreet mode...................................................................................................54
6.3.2 Search Mode ....................................................................................................55
6.3.3 Headphone .......................................................................................................55
6.4 Date/Time.......................................................................................................................56
6.5 Bluetooth........................................................................................................................57
6.5.1 About Bluetooth connection modes..................................................................57
6.5.2 Using the Manual/NFC connection mode.........................................................58
6.5.3 Using the Opened connection mode ................................................................59
6.5.4 Disconnect a Bluetooth connected device........................................................59
6.5.5 Using Disabled mode........................................................................................60
6.6 Battery............................................................................................................................61
6.7 Service...........................................................................................................................61
6.7.1 Calibration.........................................................................................................61
6.7.2 Perform radar calibration ..................................................................................62
6.7.3 Health test.........................................................................................................63
6.7.4 Change PIN ......................................................................................................64
6.7.5 Failure, Info, Dose and Clear all History...........................................................65
6.8 About..............................................................................................................................66
7. AccuRad Management Center....................................................................................67
7.1 Compatibility...................................................................................................................67
7.2 Launching the AccuRad Management Center ...............................................................67
7.3 AccuRad Management Center overview........................................................................68
7.3.1 Device...............................................................................................................68
7.3.2 Data..................................................................................................................69
7.3.3 Settings.............................................................................................................74
7.3.4 Services............................................................................................................76
7.3.5 Miscellaneous...................................................................................................83
8. Recommendations, troubleshooting and maintenance...........................................85
8.1 Recommendations.........................................................................................................85
8.1.1 Routine checkup...............................................................................................85

Table of Contents AccuRad PRD
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8.1.2 Storage............................................................................................................. 85
8.2 Troubleshooting............................................................................................................. 86
8.2.1 Troubleshooting Table ..................................................................................... 86
8.3 Maintenance.................................................................................................................. 89
8.3.1 Periodic Verifications........................................................................................ 89
8.3.2 Calibration........................................................................................................ 89
8.3.3 Cleaning........................................................................................................... 90
8.3.4 Decontamination .............................................................................................. 90
9. Specifications ..............................................................................................................91
9.1 Measurements............................................................................................................... 91
9.1.1 ANSI N42.32 and IEC 62401 ........................................................................... 91
9.1.2 IEC 60846-1:2009 and IEC 60846-2:2015....................................................... 91
9.2 Detectors....................................................................................................................... 91
9.3 Dose equivalent and dose equivalent rate .................................................................... 92
9.4 Alarming (with factory setup)......................................................................................... 94
9.5 Display, storage, controls and interface ........................................................................ 94
9.6 Connectivity................................................................................................................... 95
9.7 Environmental, electrical, physical characteristics ........................................................ 95
9.7.1 Environmental characteristics .......................................................................... 95
9.7.2 Electrical characteristics................................................................................... 96
9.7.3 Physical characteristics.................................................................................... 96
9.8 Accessories, options...................................................................................................... 96
9.8.1 Regular packaging content .............................................................................. 96
9.8.2 Optional accessories and spare parts.............................................................. 96
10. Appendix ......................................................................................................................97
10.1 Appendix 1: Communication protocol............................................................................ 97
10.1.1 Transmission mode.......................................................................................... 97
10.1.2 Protocol definition............................................................................................. 97
10.1.3 Exchange between host and device ................................................................ 99
10.2 Appendix 2: Data Export Examples............................................................................. 115
10.2.1 .n42 file example............................................................................................ 115
10.2.2 .xlsx files description ...................................................................................... 116
10.2.3 Example of use of dose history and alarm history ......................................... 118
10.3 Appendix 3: AccuRad PRD drawings and reference point for dose rate measurement119
10.4 Appendix 4: Calibration recommendations.................................................................. 120

AccuRad PRD Introduction
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1. Introduction
The AccuRad PRD is a Personal Radiation Detector (PRD), packaged in a small, rugged
and easy to use form factor. The AccuRad PRD is a high-performance measurement
device for operations requiring detection, search and localization of radiation sources.
AccuRad addresses all applications requiring efficient detection of radiological threats in
civilian defense.
The AccuRad PRD combines one sensitive low range detector to quickly detect low
gamma radioactivity levels and one high range detector for extended dose rate range and
dose measurements.
The AccuRad PRD is a self-operating device that automatically detects gamma radioactive
sources. A unique “on the move” localization algorithm enables intuitive source search by
directional screen indicator.
When a source is detected, the AccuRad PRD triggers various sound and visual alarms
and/or vibrations. The device has a built-in discreet mode that mutes alarm sound, thus
making it convenient to use in crowded environments (airport, malls, metro stations,
stadiums, streets, etc.).
The AccuRad PRD is compact sized for performing one-handed measurements, event
when wearing gloves. The user-friendly interface utilizes two display screens; one large
front case display; a smaller top display, and five buttons. The integrated belt clip affixes
securely to a belt or pocket, allowing easy view of the top display without removing.
The AccuRad PRD is powered by two AA batteries (1.2V to 1.5V).
The AccuRad PRD is designed for pairing to a smartphone with the AccuRad App. The
AccuRad App provides sharing features including data logging, batch processing,
messaging (email, SMS), and reachback connectivity to common operational data
platforms.
Optionally, the AccuRad PRD can also be remotely monitored by the SpirVIEW
Supervision software or RadResponder for situational awareness along with the other
SPIR family instruments.
The AccuRad PRD complies with the relevant current international standards (IEC, IAEA,
ANSI).

Introduction AccuRad PRD
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Blank page

AccuRad PRD Advantages
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2. Advantages
◼Exceptional radiological performance
◼Smooth user experience
◼Radar indication for accurate source localization
◼Discreet mode for covert operations
◼Robust protection for resistance to water, dust and sand ingress
◼More than 900 hours of continuous operation
◼Simplified data transmission over the smartphone app via Bluetooth
◼Exceptional radiological performance
The AccuRad PRD measurement range is from background to 10 Sv/h (1000 rem/h)
utilizing a combination of two energy compensated detectors. Dose measurements are in
compliance with various industry dosimetry standards. The Varying Background
Suppression (VBS) algorithm inhibits false alarms from normal background variations.
◼Smooth user experience
The AccuRad PRD can operate in full autonomy, only alerting the operator when a source
is detected and to assist in localizing and evaluating the threat. Effective alarm indicators
are provided: loud audible, attentive vibrator, clear visual display information and bright
LEDs.
The operator can acknowledge the alarm to silence the sound and vibration by pressing
any button. The sound alarm indicators allow to easily distinguish weak alarms from
dangerous ones. In addition, audible chirps and flashing LED help to locate the source.
The large front display helps the user clearly read alert messages during use.
Saving device data is automated, no operator action is required.
◼Radar indication for accurate source localization
A built-in and intuitive radar screen display (localization indicator) helps the operator to find
the detected source.
◼Discreet mode for covert operations
The discreet mode silences alarms for stealth applications. For more discretion, the user
can also connect headphones via the USB-C port.
◼Robust protection for resistance to water, dust and sand ingress
The AccuRad PRD is resistant to dust, sand and moisture. The integrated rubber case
protection improves shock resistance and handling.
The AccuRad can be used in temperatures as low as -4°F (-20°C) and as high as 140°F
(60°C).
◼More than 900 hours of continuous operation
The AccuRad PRD uses a “standby” mode for outstanding battery life. The AccuRad is
powered by two commercially available AA batteries: non-rechargeable Alkaline or Lithium,
and rechargeable NiMH (1.2V to 1.5V).
Rechargeable NiMH batteries can be recharged in the device when powered by USB.

Advantages AccuRad PRD
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◼Simplified data transmission over the smartphone application via Bluetooth
The AccuRad integrates Bluetooth with Near Field Communication (NFC) for pairing and
transmission of AccuRad data to a dedicated smartphone application.
For smartphone without NFC, manual pairing remains possible via Bluetooth Low Energy
(BLE).

AccuRad PRD AccuRad PRD description
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3. AccuRad PRD description
3.1 What’s in the box
◼One AccuRad PRD detection device with a belt clip
◼Two AA alkaline batteries
◼One spare belt clip
◼One quick start guide
See §9.8.2 Optional accessories and spare parts for more information on accessories and
spare parts.
The AccuRad Quick Start Guide and other documentation can be downloaded at
https://accurad.mirion.com/
Quick start guide
AccuRad PRD
detection device
Spare belt clip
Alkaline batteries

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3.2 AccuRad PRD overview
3.2.1 Hardware overview
NFC contact
area
High range detector
reference points
Low range detector
reference points
on/off button
Battery
cover tab
USB LED
indicator
USB
type C port
Battery
compartment
cover
Top
display
screen
Front
display
screen
◄Back
button
Enter
button
▲
Arrow
buttons
▼
Alarm LED
indicator
Loudspeaker

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The AccuRad PRD device includes five buttons, two screens, two LED indicators and a
connector:
◼A large front display screen
◼The top display screen
◼The on/off button is used to power on (short press); power off (long press) and
turn of/turn off the front display screen (short press).
◼The ◄back button allows to return to the previous selection or exit the search mode.
◼The ○enter button is used to access and select a settings parameter.
◼The ▲/▼arrow buttons allow to navigate through the menu.
◼The alarm LED indicator colors are:
□Red, slow blinking: low or high alarm (dose or dose rate)
□Red, fast blinking: danger alarm (dose or dose rate)
□Orange: information, low battery level (with battery gauge depleted), temperature out
of range
□Green, blinking: search mode enabled (the faster the blink, the closer to the source).
Turns red in case of alarm.
□Purple: a failure is reported. Refer to §8.2 Troubleshooting.
◼Battery Cover Tab: quarter-turn counterclockwise to open or clockwise to close the
battery cover.
◼The USB type C port allows the user to plug the provided earphones, perform Service
operations (setup, data collection update and calibration). It can also be used to
charge the batteries.
◼The USB LED indicator colors are:
□Green, solid: battery full.
□Red, solid: battery charging
□Red/green, blinking: battery depleted, or inserted battery cannot be recharged

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3.2.2 User interface overview
Note:
The user interface is displayed in light mode by default, however it can also be displayed
in dark mode.
For more information about dark mode, refer to §6.1.2 Behavior .
Interface in
Light mode
Interface in
Dark mode
mode
Gamma
Measurement
Value and Unit
Histogram
Bluetooth
Alarm
LED
Sound

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3.3 Detectors
The AccuRad PRD has two detectors to cover the whole detection range.
◼The low range detector, made of CsI (Tl) scintillator, is designed to detect weak
gamma radiation activity from background to 160 kcps; refer to the table below for the
equivalent dose rate.
The center of the low range detector is identified on the AccuRad PRD case by a
round symbol.
Sensitivity
Max range for 160 kcps
Am-241
2200 c/s/µSv/h
73 µSv/h
Cs-137
160 c/s/µSv/h
1000 µSv/h
Co-60
60 c/s/µSv/h
2667 µSv/h
◼The high range detector extends the dose rate capabilities of the device, up to 10
mSv/h (for Cs-137) when set to be compatible with ANSI 42-32. This limit can be set at
10 Sv/h, it impacts the recovering time if the device is exposed to a dose rate higher
than ANSI 42-32 limits. For more information, refer to §6.2.5 Saturation.
The center of the high range detector is identified on the AccuRad PRD case by a
cross symbol.
Refer to §10.3 Appendix 3: AccuRad PRD drawings and reference point for dose rate
measurement and §10.4 Appendix 4: Calibration recommendations to identify the
calibration points.

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3.3.1 Wearing the AccuRad PRD
◼Worn on the belt
To release it from the belt, just turn the device.
The AccuRad is designed to be worn on the belt with the integrated belt clip. The operator
shall ensure the top display remains visible in order to check any detected threat without
manipulating the device.
Clothes must not cover the loudspeaker. Otherwise the sound level may not be sufficient to
be heard in case of alarm. When holding the device, the reference direction of the
measurement is orthogonal to the front display. The device is calibrated in this direction.
◼In Search Mode
Source search is facilitated by the positioning of the low range detector, which is placed
above the front display.
Please note that the high range detector is not ideally placed to provide accurate
measurements while the device is in this position
Note:
The Search Mode should only be used when a source is present (to localize) and not
for search in low background environment.
Reference direction for
search/survey.
Reference direction:
Best accuracy for integrated
dose

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3.4 AccuRad App overview
The AccuRad App is the companion interface of the AccuRad PRD system.
The AccuRad App is available on the Apple Store or Google Play download platform. It
communicates with the AccuRad PRD device via Bluetooth. The AccuRad PRD device can
be easily paired to the AccuRad App via NFC or manually. Refer to §4.6 Pairing the
AccuRad PRD to a smartphone with NFC.
Use the AccuRad App to:
◼Review the last alarms
◼Review the history of the device (alarms, dose history, failures and information)
◼Reachback (SMS, email, RadResponder)
◼Stream data to a supervision system (SpirVIEW, RadResponder)
◼Configure the AccuRad PRD
◼Deploy the configuration very fast on a batch of AccuRad PRDs
◼Get trained on the use of the device and take a skills test.
Learn more at https://accurad.mirion.com/platform.

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3.5 AccuRad Management Center
The AccuRad Management Center requires a PC with Windows 10 64-bit, one USB 2.0
port (or newer), and a USB type C cord.
Launch the AccuRad Management Center and connect the AccuRad PRD. Once the
AccuRad PRD is automatically detected, the operator can use the user-friendly interface
to:
◼Check the device status (presence of detector / system faults)
◼Check the current measurement
◼Set the device time
◼Check and set up the calibration date
◼Check, export (xlsx or N42 format) or delete:
□Alarm history
□Default history
□Information history
□Dose history
◼Check and edit the device settings
◼Save the settings
◼Transfer the stored settings to other AccuRad PRD devices
◼Update the firmware