Mirion Technologies ACCURAD PRD User manual

Detection & Identification
Personal Radiation Detector
-B
AccuRad PRD
Operating
Manual

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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
2019-05
Document creation
/
B
2020-05
Added Bluetooth info
Edited screenshots

AccuRad PRD Table of Contents
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Table of Content
1. Introduction....................................................................................................................9
2. Features .......................................................................................................................11
3. AccuRad Description ..................................................................................................13
3.1 What’s in the box..........................................................................................................13
3.2 AccuRad Overview.......................................................................................................14
3.2.1 Physical Overview...........................................................................................14
3.2.2 User Interface Overview..................................................................................16
3.3 Detectors......................................................................................................................16
3.3.1 Wearing the AccuRad......................................................................................17
4. Using the AccuRad......................................................................................................19
4.1 Battery insertion ...........................................................................................................19
4.1.1 Charging NiMh batteries..................................................................................20
4.2 First use of the AccuRad..............................................................................................21
4.3 Start the AccuRad........................................................................................................22
4.3.1 Calibration expired ..........................................................................................22
4.4 Use Summary of the AccuRad .....................................................................................23
4.4.1 Detection Mode Operation Summary...............................................................23
4.5 Discreet Mode Overview ..............................................................................................25
4.5.1 Switching to Discreet Mode.............................................................................25
4.5.2 Disabling Discreet Mode..................................................................................25
4.5.3 Using earphones.............................................................................................26
4.6 Powering off the AccuRad............................................................................................26
5. AccuRad Advanced Operation...................................................................................28
5.1 Main Menu Overview....................................................................................................28
5.2 Using AccuRad in Detection Mode...............................................................................29
5.2.1 Using the Trend Screen...................................................................................30
5.3 Using AccuRad in Alarm...............................................................................................31
5.3.1 AccuRad behavior...........................................................................................31
5.3.2 Alarm Indication...............................................................................................31
5.3.3 Acknowledging Visual and Sound Alarm .........................................................31
5.3.4 Recommended Alarm Actions.........................................................................31
5.4 Using AccuRad in Search Mode...................................................................................32
5.4.1 Activating the Search Mode.............................................................................32
5.4.2 Using the Search Mode...................................................................................32
5.4.3 Stopping the Search Mode..............................................................................36
5.5 Analyzing AccuRad Alarm History Data........................................................................37
5.5.1 Accessing Alarm History Data.........................................................................37
5.5.2 Sending Alarm History Data to a Remote Monitoring Station...........................38

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5.6 Dose............................................................................................................................38
5.7 Update Background (BKG)..........................................................................................39
6. AccuRad Settings........................................................................................................40
6.1 Display.........................................................................................................................42
6.1.1 Units...............................................................................................................42
6.1.2 Behavior .........................................................................................................43
6.1.3 Language........................................................................................................44
6.2 Alarms.........................................................................................................................44
6.2.1 Alarms Strategy for Dose Rate & Count Rate.................................................45
6.3 Indicators.....................................................................................................................48
6.3.1 Discreet mode ................................................................................................48
6.3.2 Search Mode..................................................................................................48
6.3.3 Headphone.....................................................................................................49
6.4 Configuration Date/Time..............................................................................................50
6.5 Bluetooth .....................................................................................................................51
6.5.1 About Bluetooth modes...................................................................................51
6.5.2 Using Manual/NFC mode................................................................................52
6.5.3 Using Opened mode.......................................................................................53
6.5.4 Using Disabled mode......................................................................................53
6.6 Battery.........................................................................................................................54
6.7 Service ........................................................................................................................54
6.7.1 Calibration ......................................................................................................54
6.7.2 Perform radar calibration ................................................................................55
6.7.3 Perform Health Test........................................................................................56
6.7.4 Change PIN....................................................................................................57
6.7.5 Failure, Info, Dose and Clear all History..........................................................58
6.8 About...........................................................................................................................59
7. AccuRad Smart Application Overview.......................................................................60
7.1 Using AccuRad App.....................................................................................................60
7.2 Starting the AccuRad App............................................................................................60
7.3 Connecting the AccuRad App to the AccuRad Device.................................................61
7.3.1 NFC Connection.............................................................................................62
7.3.2 Bluetooth Connection .....................................................................................63
7.4 Using AccuRad App.....................................................................................................64
7.4.1 Interface Overview..........................................................................................64
7.4.2 Basic Navigation.............................................................................................65
7.4.3 Home Screen AccuRad App...........................................................................66
7.4.4 Settings Menu.................................................................................................68
7.4.5 Applying settings to an AccuRad batch...........................................................76
7.4.6 History menu ..................................................................................................77
8. Recommendations, Troubleshooting and Maintenance...........................................80
8.1 Troubleshooting...........................................................................................................80
8.1.1 Troubleshooting Table....................................................................................80
8.2 Maintenance................................................................................................................82

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8.2.1 Periodic Verifications.......................................................................................82
8.2.2 Calibration.......................................................................................................82
8.2.3 Cleaning..........................................................................................................82
8.2.4 Decontamination .............................................................................................83
9. Specifications..............................................................................................................84
9.1 Measurements..............................................................................................................84
9.2 Detectors......................................................................................................................84
9.3 Dose equivalent and dose equivalent rate....................................................................85
9.4 Alarming.......................................................................................................................86
9.5 Display, controls and interface......................................................................................86
9.6 Connectivity..................................................................................................................87
9.7 Environmental, electrical, physical characteristics........................................................87
9.7.1 Environmental characteristics..........................................................................87
9.7.2 Electrical characteristics..................................................................................87
9.7.3 Physical characteristics...................................................................................88
9.8 Accessories, options.....................................................................................................88
9.8.1 Regular packaging content..............................................................................88
9.8.2 Optional accessories and spare parts..............................................................88
10. Appendix......................................................................................................................90
10.1 Appendix 1: Communication protocol...........................................................................90
10.1.1 Transmission mode.........................................................................................90
10.1.2 Protocol definition............................................................................................90
10.1.3 CRC16 calculation ............................................................................................91
10.1.4 Exchange between host and device................................................................92
10.1.5 Request description.........................................................................................98
10.1.6 Appendix.........................................................................................................99
10.2 Appendix 2: Data Export Examples............................................................................107
10.2.1 ANSI N42.42 File Example............................................................................107
10.2.2 CSV File Example.........................................................................................108
10.3 Appendix 3: AccuRad drawings..................................................................................109

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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 (AccuRad for short) 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 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 is a self-operating device that automatically detects radioactive and nuclear
sources. A unique “on the move” localization algorithm enables intuitive source search by
directional screen indicator
When a source is detected, the AccuRad triggers various audible, visual alarms and/or
vibration alarms. It has a built-in discreet mode for silencing alarm sounds, thus making it
convenient to use in crowded environments (airports, malls, metro stations, stadiums, streets,
etc.).
The AccuRad is compact-sized for performing one-handed measurements, even 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 is powered by two commercially available AA batteries (1.2V to 1.5V).
The AccuRad 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.
AccuRad complies with the relevant current international standards (IEC, IAEA, ANSI).
Optionally, the AccuRad can also be remotely monitored by the SpirVIEW Supervision
software or RadResponder for situational awareness along with the other SPIR family
instruments.

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2. Features
◼Exceptional Radiological Performance
The AccuRad measurement range is from background to 1000 rem/h (10 Sv/h) utilizing a
combination of two energy compensated detectors. Dose measurements are in compliance
with various industry dosimetry standards. VBS inhibits false alarms from normal background
variations.
◼Smooth User Experience
The AccuRad 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 an alarm to silence the sound, LED and/or the vibration by
pressing any button. The sound alarm indicators help the operator easily distinguish weak
from dangerous alarms. In addition, audible chirps and flashing LEDs help to locate the
source.
The large front display helps the operator clearly read alert messages during use.
Saving device data is automated and no operator actions are required.
◼Radar indication for accurate source localization
A built-in and intuitive radar screen display (localization indicator) helps the operator localize
the detected source.
◼Discreet mode for covert operations
The discreet mode silences alarms for stealth applications. For more discretion, the operator
can connect headphones to the AccuRad using the USB-C port.
◼Robust protection for resistance to water, dust and sand ingress
The AccuRad 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).
◼>900 hours continuous operation
The AccuRad uses a “standby” mode for outstanding battery life. The AccuRad is powered by
two commercially available AA batteries (1.2V to 1.5V).
◼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).

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3. AccuRad Description
3.1 What’s in the box
◼AccuRad device with belt clip
◼AA alkaline batteries
◼Spare belt clip
◼Quickstart Guide
See §9.8 Accessories, options for accessories and spare.
The AccuRad Operating Manual can be downloaded at https://accurad.mirion.com/
AccuRad
Alkaline
Batteries
Spare
Belt Clip
Quickstart Guide

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3.2 AccuRad Overview
3.2.1 Physical Overview

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The AccuRad includes five buttons, two screens, two 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 returns to the previous menu screen or exit the Searchmode.
◼The enter button is used to access and select a settings parameter.
◼The ▲/▼ arrow buttons navigate the display and the settings menus.
◼The Alarm LED indicator colors are:
□Red, slow blinking: low or high alarm
□Red, fast blinking: danger alarm
□Green, blinking: search mode enabled (the faster the blink, the closer to the source)
□Purple: a failure is reported. Refer to §8.1 Troubleshooting.
◼Battery Cover Tab: quarter-turn to open or close the battery cover.
◼The USB-C port for connection of external headphones or Service operations (updates,
calibration). It can also be used to charge batteries.
◼The USB LED Indicator colors are:
□Green, solid: battery full
□Red, solid: battery in charge
□Red/green, blinking: battery depleted, or inserted battery cannot be recharged

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3.2.2 User Interface Overview
3.3 Detectors
The low range detector is designed to detect weak gamma radiation activity. For the low range
detector, isotropy around its axis on both planes is optimal, giving priority to the reference
direction and to the front extremity when the AccuRad is handheld.
The high range detector increases the dose rate capabilities of the device.
Please refer to §10.3 Appendix 3: AccuRad drawings for more details.
Alarm
LED
A
Bluetooth
Sound
Gamma Measurement
Value and Unit
Histogram

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3.3.1 Wearing the AccuRad
The reference direction of the measurement is orthogonal to the front display to guarantee an
optimal measurement of both detectors when the AccuRad is carried. The reference direction
of the measurement and the distance measurement have an impact of the quality
measurement.
◼Reference direction when worn: Best accuracy for integrated dose.
◼Reference direction for Search Mode
Note:
The Search Mode should only be used when a source is present (to localize) and not for
search in low background environment.

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4. Using the AccuRad
4.1 Battery insertion
The AccuRad can work with the following types of batteries:
◼AA (LR6) 1.5V alkaline batteries,
◼Lithium 1.5V batteries (non-rechargeable),
◼NiMh 1.2V batteries (rechargeable).
Make sure to set the AccuRad with the correct type of batteries. For more information refer to
paragraph §6.6.3 Using Opened mode
◼Open Settings, Bluetooth: on the screen, the Bluetooth name and the MAC Address are
indicated.
◼Press , enter the PIN code and then ▲/▼ to select Opened, then press to confirm.
◼Wait for Bluetooth configuration.
◼When done, the BT name and MAC address are displayed.
1
Insert two AA batteries into the
AccuRad. Ensure the correct
polarity position.
Release and turn the battery
cover tab.Lift the battery cover.
Quarter turn the tab to
unlock battery cover
Battery
Cover
Battery
Cover
2
3
Reinstall the battery
cover. Turn the cover tab
to lock it.

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4.1.1 Using Disabled mode
◼Open Settings, Bluetooth: on the screen, the Bluetooth name and the MAC Address are
indicated.
◼Press , enter the PIN code and then ▲/▼ to select Disabled, then press to confirm.
◼Wait for Bluetooth shutdown.
◼When done, Bluetooth is disabled. In Disabled mode, all Bluetooth connection are
disabled, hence the AccuRad is neither detectable nor connectable. When Bluetooth is
disabled, no pairing is possible, even with NFC.
Battery.
Caution:
- When inserting the batteries, make sure to respect the polarities.
- Always use batteries of the types given above. Using non-compatible batteries may
cause the explosion of the AccuRad!
4.1.2 Charging NiMh batteries
If using NiMh batteries, connect the AccuRad to the mains via the USB-C port to charge it.
The power adaptor automatically detects if the batteries can be charged and if they work
properly. If that is not the case, the USB LED indicator blinks red and green.
The batteries may heat a little during charge, it is a normal reaction. However, if the
temperature exceeds 50°C / 122°F, the build-in thermal security forbids the charge and a
default message is displayed.
Charging time may vary depending on the NiMh batteries, for instance a complete charge of
2000 mAh NiMh batteries takes about 5 hours.