Fuji Electric NRF54 User manual

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User’s Manual
Electronic Personal Dosimeter
For Hp10(gamma-ray) and Hp0.07
(gamma+beta-ray)
NRF54
Fuji Electric Co., Ltd.

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Introduction
This User’s Manual explains the operation of the Electronic Personal Dosimeter NRF54 (For Hp(10)
(gamma-ray) and Hp(0.07) (gamma+beta-ray)). It provides descriptions of parts, functions and operational
instructions for optimal use. Please make sure that you read this manual carefully before operation.
In the event of product malfunction, contact Fuji Electric representative immediately.

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Handling Precaution
Please observe the following handling precautions to ensure that you use the NRF54 Electronic Personal
Dosimeter safely and avoid injury/damages. Failure to comply with the instructions contained in this manual
may reduce the safety of the instrument. Please read this User’s Manual carefully to understand all the
precautions before using the NRF54 Electronic Personal Dosimeter.
Precautions for Use
・The Dosimeter is a precision instrument. Do not drop it or subject it to impact.
・Keep the Dosimeter in a plastic bag for protection when use in an
environment where chemical fumes, splashes/steam, full of dust and wastes
are present.
・Handle the Dosimeter with clean, dry hands. If becomes tainted, clean it with
dry cloth.
・Do not place the Dosimeter and metal objects in the same pocket. It may
cause the Dosimeter breaking.
・Avoid use where high frequency noise. Pay attention when use near the
following devices:
1. Mobile phone
2. Local wireless phone such as Personal Handy-phone System (PHS)
3. High power transceiver
4. Microwave oven
5. Radar
6. Welding machine
7. Any other spark discharging or high intensity radio wave emitting
devices
Especially keep the Dosimeter at least 5cm away from any mobile/
wireless phones
・When the battery level is critically low, read the displayed value within 10
minutes.
・Use AA alkaline battery only. During replacement, align the battery polarities
correctly.
・Prior to disposal of the used battery, protect exposed terminals with
insulating tape to prevent shorting that may cause possible heating, rupture,
or burning. Otherwise, injury or fire may result.
・Do not throw the Dosimeter or battery into a fire. Do not disassemble them.
・Keep a certain distance between the buzzer and ears to avoid the injury.
(Buzzer makes the sound over 90dB at 30 cm distance)
・Do not use the Dosimeter as a survey meter.
・If a hard impact is made on the Dosimeter, it is possible that there is a
crack on the Dosimeter. In this case, deteriorations to the capabilities in
a waterproof and a resistance of radio wave may happen.
Attention

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Contents
1. Overview ...........................................................................................................................................5
2. Contents............................................................................................................................................6
2.1 Standard product package............................................................................................................6
2.2 Model.............................................................................................................................................6
3. Precautions....................................................................................................................................... 7
3.1 Operational conditions*................................................................................................................. 7
3.2 Other requirements ....................................................................................................................... 7
4. Description of Parts and Functions ..................................................................................................8
4.1 Part names....................................................................................................................................8
4.2 Display function...........................................................................................................................10
4.3 Buzzer function ........................................................................................................................... 11
4.4 Communication function .............................................................................................................26
5. Parts Replacement .........................................................................................................................31
5.1 Battery replacement....................................................................................................................31
5.2 Clip replacement .........................................................................................................................32
5.3 USB connector cap replacement................................................................................................32
6. Operational Instruction ...................................................................................................................33
6.1 When starting to use ...................................................................................................................33
6.2 During use (Normal operation) ...................................................................................................35
6.3 During use (When alarm is generated) ......................................................................................44
6.4 During use (When communicating) ............................................................................................48
6.5 After use......................................................................................................................................48
7. Care and Maintenance ...................................................................................................................49
7.1 Daily check and maintenance items...........................................................................................49
7.2 Consumable supplies..................................................................................................................49
8. Specification ...................................................................................................................................50
8.1 General Specification..................................................................................................................50
8.2 Storage data................................................................................................................................51
9. Appendix .........................................................................................................................................52
9.1 Trouble shooting table ................................................................................................................52
9.2 Disposal.......................................................................................................................................54
9.3 Calibration ...................................................................................................................................55

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1. Overview
The Electronic Personal Dosimeter NRF54 (hereinafter referred to as NRF54) is designed to provide
measurement of personal dose equivalent of external exposure to gamma-ray (Hp(10)) and gamma+beta-
ray (Hp(0.07)) separately (hereinafter referred to as dose). NRF54 indicates accumulated dose or dose
rate. When measured dose (rate) value exceeds preset dose (rate) alarm threshold, NRF54 will activate
audible alarm and flashes LED.
By using the Dosimeter Configuration Tool and a PC, it is able to write PC-edited setting values to
NRF54 and read measurement trend data from the NRF54 via communication with the device.
If it’s worn tightly to the body, energy characteristic of the NRF54 enables direct reading of personal
dose equivalent Hp(10) and Hp(0.07).

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2. Contents
2.1 Standard product package
(1) NRF54 1 pc
(2) Accessory
・Battery (AA alkaline battery) 2 pcs
2.2 Model
NRF54

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3. Precautions
3.1 Operational conditions*
Item
Conditions
Temperature range
-10 °C to +50 °C
Relative humidity
95 % or less (No condensation)
Storage temperature
-25 °C to +50 °C
*Batteries are not included above. Please contact battery vendors for terms of use.
3.2 Other requirements
(1) See User’s Manual of “Dosimeter Configuration Tool” for information on parameter writing and data
reading via the device and a PC.
(2) Try turn OFF & ON the NRF54 if you encounter technical problems. See the “Troubleshooting Table”
if the problem is not recovered.
(3) Accumulated dose cannot be reset if the power-on-reset setting of NRF54 is “OFF”. In this case,
please reset the accumulated dose through the Dosimeter Configuration Tool.
Attention

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4. Description of Parts and Functions
4.1 Part names
105
60 29
21.8
Calibration mark
USB connector
Call button
Battery cap
Buzzer
Clip
Operating buttons
Flash LED
Auxiliary LED
LCD

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Functions
1. Buzzer : It sounds when NRF5 starts its operation, alarm and monitoring
sound is generated.
2. Flash LED : Red LED on top of LCD flashes during alarm generation.
3. Auxiliary LED : Green LED flashes along to monitoring sound. Red LED flashes
along to alarm. Yellow LED flashes along to preliminary warning
alarm.
4. LCD : Liquid Crystal Display Indicator.
5. Battery Cap : Cap of battery compartment.
6. Operating Buttons : Switch indication screen. Also, some operation parameters such as
alarm threshold can be changed by these buttons.
“◎” Button … Power ON/OFF, Screen switching
“△” / “▽” Button … Accumulated dose / Dose rate switching,
Scrolling
7. Calibration Mark : Shows location of calibration reference point. (Sensor position)
8. USB Connector : For power supply or communication by connecting USB cable.
9. Infrared Window : For communication with infrared communication device.
10. Call Button : Emergency alarm button. Press for more than 3 seconds to
generate warning sound and indication. If user does not use this
emergency alarm, the function can be made void by the Dosimeter
Configuration Tool.
11. Clip : To fix the NRF54 on the chest pocket or on the waist belt.

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4.2 Display function
LCD Indication
■Normal condition
■Alarm condition
Note1: During normal operation, “:” for time indication flashes.
Note2: Battery life indicates remaining voltage as follows.
d: Accumulated dose
dr: Dose Rate
*[D/DR] is selectable
instead of [d/dr]
via Dosimeter
Configuration Tool
d: Accumulated dose
dr: Dose Rate
*[D/DR] is selectable
instead of [d/dr]
via Dosimeter
Configuration Tool
Icon area
Date indication
[Note1]
Battery life indication
[Note2]
Accumulated
dose
or
Dose rate
Unit of measurement
Date indication
[Note1]
Battery life indication
[Note2]
Accumulated dose
or
Dose rate
Alarm/Warning info
Unit of
measurement
Icon area
More than
1.4V
1.3V to 1.4V
1.2V to 1.3V
1.1V to 1.2V
Less than 1.1V
(Low battery voltage)
Hp10: gamma
Hp07: gamma +
beta
Hp10: gamma
Hp07: gamma+beta

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4.3 Buzzer function
4.3.1 Audible signal
Audible signals sound under the following circumstances:
Circumstance
Audible signal sounds when
Beep pattern
Turn ON/OFF
NRF54 is turned on
Data changed
successfully
Setting values of NRF54 have been changed
using a Dosimeter Configuration Tool
30msec
Beep
30msec
Beep
Beep
500msec
500msec

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4.3.2 Audible alarms
Alarm activation and beep pattern are configurable by user with Dosimeter Configuration Tool.
The items that can be set are as follows:
(1) Operation timing of LED, Vibrator and Buzzer
Operating timing setting is selectable from the following 6 patterns for each alarm type, but pattern No.6
can be selected by “Low battery voltage” only.
[Pattern No.1] … When alarm is generated, the operating timing is showed below.
[Pattern No.2] … When alarm is generated, the operating timing is showed below.
[Pattern No.3] … When alarm is generated, the operating timing is showed below.
[Pattern No.4] … When alarm is generated, the operating timing is showed below.

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[Pattern No.5] … When alarm is generated, the operating timing is showed below.
[Pattern No.6] … When alarm is generated, the operating timing is showed below.
(2) Buzzer frequency
Buzzer frequency setting is selectable from the following two settings for each alarm type.
[High] … When buzzer sound setting is “ON”, High frequency sound is generated in alarm condition.
[Low] … When buzzer sound setting is “ON”, Low frequency sound is generated in alarm condition.
(3) Buzzer sound
Buzzer sound setting is selectable from the following two settings for each alarm type.
[ON] … When alarm is generated, buzzer sounds.
[OFF] … When alarm is generated, buzzer doesn’t sound.
(4) Backlight
Backlight color setting is selectable for the following four settings for each alarm type.
[OFF] … When alarm is generated, backlight doesn’t turn on.
[RED] … When alarm is generated, red backlight and white backlight flash. Red auxiliary LED flashes
in conjunction with the red backlight.
[YELLOW] … When alarm is generated, yellow backlight and white backlight flash. Yellow auxiliary
LED flashes in conjunction with the yellow backlight.

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[WHITE] … When alarm is generated, white backlight flashes.
(5) Sounding time
Sounding time setting is selectable from the following settings for each alarm type.
[Continuous] … When buzzer sound setting is “ON”, buzzer sounds continuously in alarm condition.
[1 min] to [15 min] … When buzzer sound setting is “ON”, buzzer sounds for set period and then buzzer
stops.
(6) Mute
Mute setting is selectable from the following two settings for each alarm type.
[Available] … Buzzer can be stopped by pressing “◎” button when buzzer sounds.
[Not available] … Buzzer cannot be stopped when buzzer sounds.
(7) Vibrator
Vibrator setting is selectable from the following two settings for each alarm type.
[ON] … When alarm is generated, vibrator operates.
[OFF] … When alarm is generated, vibrator doesn’t operate.
(8) Flash LED
Flash LED setting is selectable from the following two settings for each alarm type.
[ON] … When alarm is generated, flash LED on top of the display turns on.
[OFF] … When alarm is generated, flash LED doesn’t turn on.
(9) Latch
Latch setting is selectable from the following two settings for “Dose rate alarm/ Dose rate warning”.
[ON] … When alarm is generated, alarm operation continues for 10 seconds or continuously according
to the setting if the alarm condition is canceled.
[OFF] … When alarm is generated, alarm operation stops if the alarm condition is canceled.

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When multiple alarms happen, alarm pattern is determined by alarm priority.
Alarm priorities are as follows:
Priority
Alarm
Remarks
1
Memory error
Breakdown
2
RTC error
Breakdown
3
Device error
Component failure
4
Battery empty
5
Emergency alarm
6
Detector optical check error
7
Hp(0.07) accumulated dose overload
8
Hp(10) accumulated dose overload
9
Hp(0.07) dose rate overload
10
Hp(10) dose rate overload
11
Hp(0.07) accumulated dose alarm
12
Hp(10) accumulated dose alarm
13
Hp(0.07) dose rate alarm
14
Hp(10) dose rate alarm
15
Hp(0.07) accumulated dose warning
16
Hp(10) accumulated dose warning
17
Hp(0.07) dose rate warning
18
Hp(10) dose rate warning
19
Low battery voltage
20
Time alarm
21
Calibration due expiration
22
Communication error (radio, BT, USB)
Component failure

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Initial settings of alarm operation for each alarm type are as follows:
1. Dose (rate) alarm
Alarm type
Initial setting of alarm operation
Accumulated
dose alarm
(1) Operation timing
[Pattern No.3]
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[RED]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[ON]
[ON]
N/A
(10) LCD indication sample
Accumulated dose alarm Overload
Accumulated
Dose warning
(1) Operation timing
[Pattern No.3]
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[YELLOW]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[ON]
[ON]
N/A
(10) LCD indication sample
Accumulated dose warning
.

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Alarm type
Initial setting of alarm operation
Dose rate
alarm
(1) Operation timing
[Pattern No.2]
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[RED]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[ON]
[ON]
[ON]
(10) LCD indication sample
Dose rate alarm Overload
Dose rate
warning
(1) Operation timing
[Pattern No.2]
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[YELLOW]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[ON]
[ON]
[ON]
(10) LCD indication sample
Dose rate warning
*When “Accumulated dose alarm/ Accumulated dose warning” and “Dose rate alarm/ Dose rate warning”
are generated at the same time, operation timing switches alternately. (e.g. pattern No.3 and pattern
No.2 are switched every second in above case)

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2. Operation time alarm
Alarm type
Initial setting of alarm operation
Time alarm
(1) Operation timing
[Pattern No.1]
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[RED]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[ON]
[ON]
N/A
(10) LCD indication sample
Time alarm
*Indication (HH:MM) is operating time
(increasing)

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3. Low battery voltage
Alarm type
Initial setting of alarm operation
Low battery
voltage
(1) Operation timing
[Pattern No.6]
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[OFF]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[OFF]
[ON]
N/A
(10) LCD indication sample
Low battery voltage
Battery empty
(1) Operation timing
N/A
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[OFF]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[OFF]
[ON]
N/A
(10) LCD indication sample
Battery empty
*If “Battery empty” is displayed, please replace the batteries with new ones immediately.
*Only dose measurement function is active in “Battery empty” condition.
*Count down remaining operation time
to turn off

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4. Indication of abnormality
Alarm type
Initial setting of alarm operation
Detector optical
Check error
(1) Operation timing
[Pattern No.4]
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[RED]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[ON]
[ON]
N/A
(10) LCD indication sample
Detector optical check error
Memory error
(1) Operation timing
[Pattern No.4]
(2) Buzzer frequency
(3) Buzzer sound
(4) Backlight
(5) Sounding time
[High]
[ON]
[RED]
[Continuous]
(6) Mute
(7) Vibrator
(8) Flash LED
(9) Latch
[Not available]
[ON]
[ON]
N/A
(10) LCD indication sample
Memory error Measurement stops