PM1703GNB Personal Radiation Detector

Polimaster's PM1703GN series of Personal Radiation Detectors is a unique family of gamma neutron pagers capable of detecting the slightest amounts of radioactive and nuclear materials. These instruments are recommended for customs, border patrol, first responders and law enforcement officers whose duties include counteracting illicit trafficking of radioactive and nuclear materials as well as counteracting the efforts to use these materials for terrorism.

The instruments are each equipped with a CsI(Tl) and a LiI(Eu) scintillation detector to alert the user that radiation levels have exceeded the threshold value. The PM1703GN series of instruments perform the following functions, they each:

  • Detect gamma and neutron radiation sources, even when they are shielded
  • Search for and locate the gamma or neutron radiation sources
  • Alert the user to the presence of a radiation source through both audible and vibrating alarms
  • Record and store data for up to 1000 events in the instruments' non-volatile memory
  • Transmit all recorded data via an infrared channel for data processing and analysis

Once the instrument is turned on, the instrument automatically begins taking measurements and storing the background radiation information. The instruments can detect even the slightest increase that causes the levels to exceed the radiation background. The instruments' advanced processing algorithm enables the user to update the background levels and modify the alarm thresholds depending on the requirements to avoid false alarms and the probability of detecting a source.

PM1703 GN series is additionally designed to ensure adequate adaptation to the background level so that the instruments can locate a radioactive source in changing environments. For example, the instruments can detect radiation sources when the background decreases due to radiation shielding or when the radiation intensity is high requiring the source to be located among high radiation.


In addition to being able to detect radioactive and nuclear materials, search for and locate the radiation sources, the PM1703GNB Personal Radiation Detector can also identify the radiation source. The instrument is particularly effective as its user can be at a safe distance from possible radiation sources while the instrument is operating. The PM1703GNB records the spectra and other information that is transmitted instantaneously from the instrument to an iPAQ Pocket PC by Bluetooth. In that way, the instrument's operator is protected from radiation exposure

These features include:

  • Bluetooth Connectivity – The instrument may be equipped with Bluetooth transmitter and connect with any Bluetooth enabled computing device, including PDAs, laptops and desk-top computers. It offers the ability to transmit the gross counts for display on the computer screen.
  • Isotope Identification Software – A suite of isotope identification software applications that can be installed on any computer or Smartphone and allow immediate identification and category classification of the alarming isotope(s). Identification of multiple isotopes is also possible.
  • Networking Software –Network software that will allow any Internet enabled computing device to transmit the data via Internet or other communication system to a Unified Command Center (UCC). Through the UCC, users can obtain on-line information about isotope dose rates, isotopes detected and identified, GPS locations of the source (using external GPS options), live mapping of an area and monitoring of radiation levels by each user and by UCC - for the whole area of surveillance.
Decision Support System – A new decision tree logic application allows managers to set up protocols that are fed back to the end users using Q&A and simple logic. Examples include the ability to set up protocol around naturally occurring radiation or medical isotopes. The DSS system allows the UCC users to develop an artificial intelligence module to assist in mitigation of false alarms.
PM1703GNB - Personal Radiation Detector
Detector type  
- gamma CsI (Tl)
- neutron LiI (Eu)
Energy range  
- for gamma 0.033 – 3.0 MeV
- for neutron from thermal to 14.0 MeV
Time of measurement 0.25 s
Range of n coefficient (number of mean square deviation of ambient background s)                       Step from 1 to 9.9                                     0.1
Accuracy of exposure rate measurement over the range of 10 to 4000 mR/h on 137Cs in collimated radiation ±30%
Count time:  
- in background updating mode 36 s
- in the search mode 2 s
- Special nuclear materials   
Radionuclide identification using Bluetooth communication with external Pocket PC:
- Special nuclear materials 
- Medical radionuclides 
- Naturally occurring radioactive  materials (NORM)
- Industrial radionuclides 
233U, 235U, 237Np, Pu
67Ga, 51Cr, 75Se, 99mTc,103Pd, 111In, 123I, 131I, 201Tl, 133Xe
40K, 226Ra, 232Th, 238U
57Co, 60Co, 133Ba, 137Cs, 192Ir, 204Tl, 226Ra, 241Am
Additional functions PC communication mode (IR, Bluetooth)
Power supply One AA battery
Battery life time (not more than 5 min/24 hours), not less 1000 h
Battery discharge warning indication on LCD
Drop test on concrete floor 4.9 ft (1.5 m)
Protection degree of case IP65
Operating conditions:
- temperature range -22°F to 122°F (-30°C to 50°C)
(-22°F to 5°F (-30°C to -15°C)
only audible and vibration alarm is available)
- relative humidity at 95°F (35°C) up to 98 %
- pressure from 10.2 to 15.5 psi (from 70 to 106.6 kPa)
Weight (with battery), max 8.8 oz (250 g)
Dimensions 4'' x 3 1/8'' x 1 5/8''
(99 x 80 x 40 mm)
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