AT1117M Radiation monitor (Hand and coat surface contamination monitors)

This radiation monitor configuration can be used to:
- Measure flux density and surface activity of 239Pu alpha particles with BDPA-02 / BDPA-03
- Measure beta flux density and surface activity of 90Sr+90Y with BDPB-02 / BDPB-03.
PU2 processing unit features integrated detection module, allowing in situ measurement of gamma radiation ambient dose equivalent dose and ambient dose equivalent rate.
Radiation monitor can be operated both as fixed and portable instrument. In fixed version all probes are attached to a wall-mounted bracket and can be easily removed without special tools to be used as a portable variant.
Operating principle
 
Monitor's operating principle is based on highly sensible scintillation measurement method with ZnS(Ag) detector for alpha radiation detection units and plastic detector for beta radiation detection units.
Detection unit sends data to PU2 processing unit, where it is displayed on a big LCD screen. Operator can manually record measurement results.
Operation algorithm provides measurement continuity and real time statistical processing of measurement results.
 
 
Components:
Alpha and beta radiation detection unit (can be selected):
                BDPA-02(α) / BDPA-03 (α)
                BDPB-02(β) / BDPB-03 (β)
PU2 Processing unit
Cable (connects detection unit to PU2)
Wall bracket
 
 
Application
 
▪ Dosimetric and radiometric monitoring in Nuclear Power Plants, manufacturing facilities, research laboratories, medical institutions, etc.
 
 
Features
 
▪ High sensitivity
▪ Quick response to changes in radiation environment
▪ Wide measurement range
▪ Integrated stabilisation and continuous performance monitoring systems
▪ Sound, light and visual alarm for exceeded threshold levels
▪ Measurement results can be written and stored in non-volatile memory of Radiation monitor
▪ Operation in harsh weather conditions

Processing unit

PU2

Registered radiation

Gamma radiation (γ)

 

 

 

 

Detector

Geiger-Muller counter tube

Energy range

60 keV – 3 MeV

Measurement range of ambient radiation dose rate equivalent

1 µSv/h – 10 mSv/h

Measurement range of ambient radiation dose equivalent

1 µSv – 1 Sv

Limit of intrinsic relative

error of measurement

±20%

Sensitivity to gamma radiation from 137Cs

1.0 cps/µSv·h-1

Response time for

dose rate change from 1 to 10 µSv/h.

2 s

Energy dependence relative to 662 keV (137Cs)

From -25% to +35%

(for 60 keV – 3 MeV energy range)

Protection rating

IP64

Power supply

1) By integrated rechargeable battery pack

2) By external 230 VAC, 50 Hz power source

3) By external 12 VDC power source

4) By external battery

Continuous run time

24 h

Overall dimensions, weight

Ø137х230 mm, 0.7 kg

 

AT1117M Radiation monitor: General characteristics

Connection interface of detection unit to PU2

RS 232

Burn-up life

100 Sv

Operation temperature range

From -30°С to +50°С

Relative humidity with air temperature ≤35°С without condensation

95%

 

Wall bracket

Dimensions:

296х175 mm

 

 

Weight:

1.4 kg

Supplied with all attachment hardware

 

 

 

Detection units

BDPA-02

BDPA-03

BDPB-02

BDPB-03

Registered radiation

Alpha radiation (α)

Alpha radiation (α)

Beta radiation (β)

Beta radiation (β)

Detector

Scintillation, ZnS(Ag),
100 cm
2

Scintillation, ZnS(Ag),
300 cm
2

Scintillation plastic,
100 cm
2

Scintillation plastic,
300 cm
2

Energy range

4 – 7 MeV

4 – 7 MeV

155 keV – 3.5 MeV

155 keV – 3.5 MeV

Flux density measurement range of 239Pu alpha particles

0.05 – 5·104 
part. Min
‑1·cm-2

0.05 – 5·104
 part. Min‑1·cm-2

 

 

239Pu surface activity measurement range

1.7·10-3 – 1.7·103
 Bq·cm-2

1.7·10-3 – 0.34·103
 Bq·cm-2

 

 

Sensitivity to alpha radiation from 239Pu source

0.7 
cps/part. min
‑1 cm‑2


cps/part. min
-1 cm-2

 

 

Beta particles flux density measurement range

 

 

0.5 – 1.5·105
 part. min‑1·cm‑2

0.5 – 0.5·105
 part. min‑1·cm‑2

Measurement range of 90Sr+90Y surface activity

 

 

2.2·10-2 – 0.66·104 
Bq·cm
-2

2.2·10-2 – 0.22·104 
Bq·cm
-2

Sensitivity to beta radiation from 90Sr+90Y source

 

 

0.9 
cps/part.·min
-1  cm-2

2.5 
cps/part.·min
-1  cm-2

Limit of intrinsic relative measurement error

±20%

±20%

±20%

±20%

Protection rating

IP64

IP64

IP64

IP64

Power supply

By PU2

By PU2

By PU2

By PU2

Overall dimensions, weight

Ø137х230 mm,
0.7 kg

Ø210х275 mm,
0.9 kg

Ø137х230 mm,
0.7 kg

Ø210х275 mm,
0.9 kg

Outside appearance

Design and specifications are subject to change

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

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

ВложениеРазмер
Download brochure1.97 МБ