AT1117M Radiation monitor (Neutron Dosimeter)

This configuration of Radiation monitor is a hand-carried measurement instrument and is designed to measure neutron radiation ambient dose equivalent rate and ambient dose equivalent, as well as to simultaneously monitor gamma radiation ambient dose equivalent rate and ambient dose equivalent. For operation and indication either processing unit PU2 or hand-held PC can be used.

 

Version 1

Version 2

Components:

Components:

BDKN-03 Neutron radiation smart probe

BDKN-03 Neutron radiation smart probe

PU2 Processing unit

Hand-held personal computer (HPC)

Cable

BT-DU4 Adapter

Holder (For attaching PU2 to BDKN-03)

Cable

 

Holder (For attaching BT-DU4 to BDKN-03)

  1. Processing unit PU2 (Version 1)

Detection unit sends data over cable to PU2 processing unit, where it is displayed on LCD screen. PU2 has recording and memory option for up to 99 measurement results, which can further be uploaded to a personal computer via dedicated application software. Sound, light and visual alarms activate when user-adjustable threshold levels are exceeded. Operation algorithm provides measurement continuity and real time statistical processing of measurement results.

 

 

 

  1. Hand-held personal computer (HPC) (version 2)

Data transfer from detection unit to HPC can be realised over Bluetooth (BT-DU4 Interface adapter) or cable.
Not only HPC has almost all PU/PU2 functions, but also offers some advanced features:
▪ GPS referencing of measurement results
▪ Automatic recording and storing over 10,000 measurements with GPS referencing
▪ Charge indication for HPC and Interface adapter batteries
▪ Loading data to PC for further analysis and processing by professional GARM software (Option)
▪ Automatic data transfer to a remote server by "ARMS" software [Via FTP server; 3G modem or Wi-Fi module shall be available on HPC] (Option)

 

 

 

Application

▪ Dosimetric monitoring in Nuclear Power Plants, manufacturing facilities, research laboratories, medical institutions, etc.


Features

▪ Quick accommodation to changes in radiation level
▪ Wide energy range
▪ Sound and visual alarm of exceeded threshold level
▪ Performance self-check
▪ Operation in harsh weather conditions
 

 

Specifications

Detection unit

BDKN-03

Registered radiation

Neutron radiation

Detector

3He proportional counter in polyethylene moderator

Energy range

0.025 eV – 14 MeV

Measurement range of ambient radiation dose rate equivalent

0.1 µSv/h – 10 mSv/h

Measurement range of ambient radiation dose equivalent

0.1 µSv – 10 Sv

Sensitivity to neutron radiation of Pu-Be source (In dose rate measurement mode)

0.355 cps/µSv·h-1

Neutron flux density measurement range

0.1 – 104 neutron·s-1·cm-2

Sensitivity to neutron radiation of Pu-Be source (In flux density measurement mode)

0.5 cps/neutrons·sec-1·cm-2

Limit of intrinsic relative measurement error

±20%

Protection rating

IP64

Overall dimensions, weight

314x220x263 mm, 7.8 kg

Relative sensitivity coefficients for standard neutron radiation sources with different energies for ambient dose equivalent rate measurement

n-radiation source

BDKN-03

Thermal, En=0.025 eV

0.225+0.045

Ra-Be, En=100 keV

0.81+0.08

252Cf, En=2.13 MeV

1.020.10

Pu-Be, En=4.16 MeV

1.0

Relative sensitivity coefficients for standard neutron radiation sources with different energies for flux density measurement

n-radiation source

BDKN-03

Thermal, En=0.025 eV

0.00640.0013

Ra-Be, En=100 keV

0.1820.018

252Cf, En=2.13 MeV

1.010.10

Pu-Be, En=4.16 MeV

1.0

Controls and indicators

PU2 [Version 1]

HPC [Version 2, 3]

Registered radiation

Gamma radiation

Gamma radiation

Detector

Geiger-Muller counter tube

Geiger-Muller counter tube

Energy range

60 keV – 3 MeV

60 keV – 3 MeV

Measurement range of ambient radiation dose rate equivalent:

1 µSv/h – 10 mSv/h

1 µSv/h – 100 mSv/h

Measurement range of ambient radiation dose equivalent

1 µSv – 1 Sv

1 µSv – 10 Sv

Energy dependence relative to 662 keV (137Cs)

From -25% to +35% (In energy range from 60 keV to 3 MeV)

±25% (For energy range from 60 keV to 3 MeV)

Sensitivity to 137Cs gamma radiation

1.0 cps/µSv·h-1

0.3 cps/µSv·h-1

Response time for dose rate change

Up to 2 s (For dose rate≥1 µSv/h)

Up to 7 s (For dose rate≥1 µSv/h)

Limit of intrinsic relative measurement error

±20%

±20%

Protection rating

IP64

IP64

Overall dimensions, weight

200x85x36 mm, 0.5 kg

260х87х39 mm, 0.6 kg

AT1117M Radiation monitor: General characteristics

Power supply

 

Interface

 

- Detection unit

1) By PU2

2) By BT-DU4 adapter

3) By HPC

- Connection of detection unit to PU2

RS 232

- PU2, HPC, BT-DU4

1) By integrated rechargeable batteries

2) By +12 VDC power source

3) By 230 VAC 50 Hz power source

- Detection unit to HPC

Bluetooth (via BT-DU4 adapter)

RS 232

Continuous operation time in case of rechargeable battery supply

24 h minimum (PU2)

12 h minimum (HPC)

Operation temperature range

From -40°С to +50°С

 

 

Relative air humidity with temperature ≤35°С without condensation

≤95%

Radiation monitor meets requirements of GOST 27451-87 (Ionizing radiation measuring means), safety requirements of IEC 61010-1:2001

and Electromagnetic compatibility requirements of EN 55011:2009, IEC 61000-4-2:2008, IEC 61000-4-3:2008, IEC 61000-4-4:2004+A1:2010, IEC 61000-4-6:2008

The radiation monitor is listed in national registries of measurement instruments of Republic of Belarus, Russian Federation, Ukraine, Kazakhstan, Uzbekistan, Azerbaijan and Turkmenistan.

Design and specifications are subject to change

 
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