PM1405 RADIATION COUNTER Survey meter POLIMASTER

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.

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 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.

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

INSTRUCTION MANUAL

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