Polimaster Innovating radiation detection technologies since 1992

Survey meter PM1405

Survey meter is designed for search, detection and localization of gamma and beta radiation sources. Survey Meter measures beta radiation flux density from contaminated surfaces and ambient dose equivalent rate of gamma and X-ray radiation. Instrument alerts the user with audible alarms when preset radiation thresholds are exceeded and registers with audio signal every detected count in a search mode.

Instrument is recommended for first responders, customs and border officers, radiological and radionuclide isotope laboratories, bank personnel.


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Operation Principle

Survey meter РМ1405 incorporates a large energy compensated GM tube for precise measurement of the ambient equivalent dose rate of the X-ray and gamma radiation in the range from background level to 100 mSv/h (10 R/h). By opening the special screen-filter and choosing beta radiation flux density measurement mode, the instrument allows to estimate the intensity of the contamination of surfaces of various environmental objects from beta radiation sources.

Instrument have small size and lightweight, large LCD display with backlight, audible alarm, non-volatile memory.

 User Software

User software for PM1405 allows:

  • Reading out events from the instrument non-volatile memory;
  • Conducting on-line real time measurement and displaying the results in digital mode;
  • Read/record operation settings;
  • Save measurement history on PC (history export);
  • Warning about probability of radiation contamination.


Functions available by special order:
  • Dose measurement of gamma and X-ray radiation
  • Measurement of alpha particles flux density
  • Search of alpha radiation sources
  • Extended beta flux density measurement range 6.0 - 104 min -1 • cm-2



  • Inspection of Raw Materials, Waste & Goods
  • Surface Contamination
  • Inspection of Raw Materials, Waste & Goods
  • Laboratory Equipment


Detector Geiger-Muller counter
Dose equivalent rate (DER) measurement range 0.1 μSv/h − 100 mSv/h
DER indication range 0.01 μSv/h − 130 mSv/h
DER measurement accuracy ± (20 + K/H) %, where Ḣ – dose rate, μSv/h K - coefficient 1.0 μSv/h
Dose equivalent (DE) measurement range 1.00 μSv − 10.0 Sv
DER indication range 0.01 μSv − 10.0 Sv
DE measurement accuracy ± 20 %
Alarm Type audible, visual
Thresholds available for all types of radiation
Energy range:
Photon radiation from 0.05 to 3.0 MeV
Energy response relative to 0.662 MeV:
in the energy range from 0,05 to 3,0 MeV, no more than ± 30 %
β- radiation flux density measurement range from 6.0 to 103 min-1•cm-2 (cpm/cm2)
β- radiation flux density accuracy:
90Sr+90Y ± (20 + А/φ) %, where φ – measured β-flux density, min-1•cm-2 (cpm/cm2); А – coefficient, 60 min-1•cm-2 (cpm/cm2));
β-particle flux indication range from 0.1 to 104 min-1•cm-2 (cpm/cm2)
Energy range by β-particle flux density measurement from 0.1 to 3.5 MeV
Energy response by β-particle flux density measurement ± 30%
Sensitivity for β-radiation:
90Sr+90Y 3.5 counts·cm2
Count rate indication for β-γ radiation in the search mode from 0.00 to 3.5·105 s-1 (cps)
α-radiation flux density measurement range from 90 to 104 min-1•cm-2(cpm/cm2)
α- radiation flux density accuracy:
in 239Pu measurement range ± (30 + А/φ) %, where φ − measured α- flux density, min-1•cm-2 (cpm/cm2); A – coefficient equat to the 900 min-1•cm-2 (cpm/cm2)
α- particle flux density indication range from 0.1 to 104min-1•cm-2 (cpm/cm2)
PC communication USB interface
Operation mode setup time, no more 60 s
Power supply two AA batteries 3 ( + 0.2; -0.8) V; external power supply
Battery lifetime:
- at an average value of the measured DER up to 0.3 μSv/h; - using LCD backlight, audible and visual alarm not more than 5 m/day, no more than 6 months
Ingress protection IP30
Drop test on concrete floor 0.7 m
Dimensions 148 х 80 х 38 mm
Weight 0.29 kg
Operating temperature -10°C to 50°C (14°F to 122°F)
Humidity up to 95 % at 35°С
Atmospheric pressure from 84 up to 106.7 kPa
Mean service lifetime 10 years



PM1405 software ver. 1.3.7, 01.12.2016 (English, Russian)
Size : 74.56 MB


PM1405 Leaflet
Size : 968.46 KB

Software User Manuals:

PM1405 software user guide
Size : 2.02 MB


PM1405 CE certificate Download

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