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Hand-Held Radiation Monitor PM1710A/GNA

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The PM1710A gamma and PM1710GNA gamma-neutron monitors have the highest sensitivity among the family of the Polimaster’s hand-held search instruments. They are ideally suited for fast search and detection of traces of radioactive and nuclear materials.
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The PM1710A Hand-held Gamma and PM1710GNA Gamma-Neutron Monitors are highly sensitive instruments designed to detect and locate even the slightest traces of radioactive and nuclear materials. The PM1710A and PM1710GNA perform the following functions:

  • Detect gamma and both gamma and neutron radiation, respectively;
  • Locate detected radiation sources;
  • Alert the user of the presence of radioactive or nuclear materials through both audible and vibrating alarms;
  • Record and store data for up to 1000 events in their non-volatile memory;
  • Transfer data from the instrument to the PC through an infrared channel.

 

The instruments are easy to use and can be operated even after the minimal training.

Both types of the instruments have a radiation sensitivity that is close to the sensitivity of the much larger and significantly more expensive fixed place pedestrian radiation portal monitors. The PM1710A and PM1710GNA achieve this sensitivity because of their large CsI(Tl) gamma radiation detectors and 3He neutron detector. However, small and compact ergonomic design of these units allows using these instruments comfortably and easily whether instruments are being carried around or put in a fixed place.

The PM1710A and PM1710GNA are also equipped with an infrared-channel for establishing communication between the instrument and the PC. Through infrared transmission, the user can program the instruments' settings by using the proprietary PC software provided with the instruments. This software also allows the user to download operational data from instruments' memory to a PC for further data processing and analysis.

When the instrument detects radiation that exceeds the preset radiation threshold values, the alarms will begin to signal the danger through either the audible and/or vibrating alarms. The PM1710A and PM1710GNA use an advanced operation algorithm that guarantees rapid detection and localization of the radioactive and nuclear materials even in harsh conditions and environments with variable radiation levels. The rate of the alarm signal series will increase when the instrument approaches the radiation source and will likewise decrease when it moves away from the source, thus allowing a user to locate the radiation source.

Standards compliance

Designed to meet ITRAP (IAEA) requirements

PM1710APM1710GNA
Detector
CsI(Tl)CsI(Tl)
Search γ-channel
Sensitivity for 137Сs, no less
5 cps/(µR/h) (500 cps/(µSv/h)) 3 cps/(µR/h) (300 cps/(µSv/h))
Sensitivity for 241Am, no less
5 cps/(µR/h) (500 cps/(µSv/h)) 3 cps/(µR/h) (300 cps/(µSv/h))
Energy range in Search Mode
0.045 – 3.0 MeVfrom 0.06 to 3.0 МeV
Indication rangefrom 1 to 3000 μR/h (from 0.01 to 30 μSv/h)from 1 to 3000 μR/h (from 0.01 to 30 μSv/h)
DE measurement range
Accuracy of DER indication (at 137Сs)
in the range of 0.1 – 20 µSv/h (10 – 2000 µR/h),
no less
± (20 + К/Η ) %,
where Η – is the indicated DER,
К – a coefficient of 1 µSv/h
± (20 + К/ Η ) %,
where Η – is the indicated DER,
К – a coefficient of 1 µSv/h
Gamma radiation scintillation spectra
acquisition channels
xx
The number of γ-radiation scintillation spectra
saved in the instrument’s memory
xx
Activity measurement sample
density range
x
Accuracy of 137Cs nuclide activity measurementx
Sensitivity to 137Cs in the activity measurement modex
137Cs activity measurement range
when using Marinelli beaker
x
Search neutron-channel
Detector
x3He
Sensitivity
- for Pu-α-Be
- for thermal neutrons
- for Pu-α-Be (with neutron moderator)
0.1 (counts·cm2)/neutron
7.0 (counts·cm2)/neutron
1.0 (counts·cm2)/neutron
Neutron count rate measurement energy range
xfrom thermal to 14.0 МeV
Indication range001 – 999 s-1
DER measurement range
(by Pu- α-Be source in collimated radiation)
Measuring γ-channel
Detector
xx
Dose equivalent rate measurement rangexx
Dose equivalent rate measurement energy rangexx
Measuring α and β-channel
Detector
xx
a-radiation flux density measurement range

xx
Sensitivity to α- radiation (239Pu)
β- radiation flux measurement range
xx
Sensitivity to β- radiation (90Sr+90Y)
Energy range of the measured of β-radiation flux
xx
Physical
Dimensions
172 x 57 x 32 mm
(6¾'' x 2¼'' x 1¼'')
195 x 82 x 32 mm
(7 5/8'' x 3¼'' x 1¼'')
Weight
420 g (14.8 oz)640 g
Ingress protection code
IP65IP65
Drop test on concrete floor:
0.7 m (2.3 ft)0.7 m (2.3 ft)
CommunicationIRDAIRDA
Environmental
Temperature
-30 to + 50 °C (-22 to +122 °F) -30 to + 50 °C (-22 to +122 °F)
Humidity
up to 95 % at 35 °С (95 °F)up to 95 % at 35 °С (95 °F)
Power
Battery typeone AA batteryone AA battery
Battery lifetime
up to 700 hoursup to 1.000 hours
Power supplyone AA battery 1.5 ( + 0.1; -0.4) V