Polimaster Innovating radiation detection technologies since 1992

Personal Radiation Detector PM1703GNA-II

Category: Gamma-Neutron PRDs

Upgraded PRD PM1703xx-II Series have improved CsI(Tl) detector characteristics and fully comply with ANSI N42.32-2016.

The extended measurement range is enabled by the installed new CsI(Tl) detector with a semiconductor photomultiplier (SiPM).

* Instruments of PM1703xx-II Series were successfully tested in ORNL.


PM1703GNA-II is a gamma-neutron PRD, which has such competitive features as high sensitivity, compact size, user-friendly interface, low-energy operation, waterproof and shockproof case.

The instrument can be used in both indoor and outdoor environments for detection and localization of gamma and neutron radiation sources and measurement of dose equivalent rate (DER).

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Operation Principle

As well as previous well-known modifications of PRD PM1703 Series, PM1703GNA-II continuously monitors the environment for radiation, evaluates dose equivalent rate (DER) and alerts the user with a visual, audio and/or vibrating alarm if a radiation source is detected. The readings of the instrument are displayed in counts per second for both neutron and gamma detectors and the search algorithm based on background calibration is used. The Instrument has “Mode 0…9” , which is designed to display the current level of gamma radiation background in the form of digits from 0 to 9. Instrument is equipped with 6LiF/ZnS-screen based neutron detector, which complies with ANSI N42.32-2016 requirements. 

All operations history is stored in the instrument non-volatile memory (up to 1000 data points), protecting the data even when the battery is removed. The stored data can also be transferred to the PC via USB interface. Storing data format is designed to meet ANSI N42.42.

Supress NORM algorithm

This algorithm allows excluding alarm signal when the natural gamma background value increases and Naturally Occurring Radioactive Materials (NORM) are detected. If NORM are detected - green indication light is given. In the case the other radionuclides types (IND, NUC, MED) are detected, red indication light and sound alarm are activated.


  • PM1703GNA-II - basic modification
  • PM1703GNA–II BT - is equipped with Bluetooth radio channel
  • PM1703GNA–II MBT – has extended range of DER measurement, DE measurement mode and Bluetooth radio channel



Instrument is designed for everyday use in both indoor and outdoor environments by first responding communities: emergency services, customs and border patrol, police.

Standards Compliance

Storing data format is designed to meet ANSI N42.42.

Complies with ITRAP/IAEA requirements, ANSI 42.32-2016 and IEC


Detector Csl(TI) SiPM; 6LiF/ZnS
Energy range from 0.033 to 3.0 MeV
Energy range: neutron thermal to 14.0 MeV
Dose equivalent rate (DER) measurement range 0.01 µSv/h – 300 µSv/h
Sensitivity, gamma radiation: for 137Сs, no less for 241Am, no less 100 cps per µSv/h (1 cps per µR/h)
500 cps per µSv/h (1 cps per µR/h)
Sensitivity, neutron radiation: for Pu - α-Be for thermal neutrons 0.035 counts x cm2/neutron
1.2 counts x cm2/neutron
Accuracy: at 137Cs in the range of 0.01 µSv/h – 300 µSv/h ± 30%
Response time: in seconds 0.25
Alarm Type visual, audible and vibration
Data recording no less 2000 data points
Ingress protection IP65
Drop test on concrete floor 0.7 m (2.3 ft) without cover 1.5 m (4.9 ft)
Power supply one AA size alkaline or rechargeable battery (2700 mAh recommended)
Battery lifetime: up to 900 hours
Operating temperature -30 to+50°C (-22 to +122°F)
Humidity up to 98% at +35°C (+95°F)
Dimensions 87x72x32 mm (3.43 x 2.81 x 1.25 in.)
Weight no more 240 g.
PC communication USB interface
Operating system requirements Windows 7, Windows Server 2012 or higher.



PM1703GNA-II (BT) Leaflet
Size : 1.05 MB


PM1703GNA-II CB Test Certificate Download
PM1703GNA-II CE Certificate Download

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