Electronic Dosimeter PM1211

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Electronic Dosimeters of PM1211 Series provide a new feature of automatic calculation and display of the countdown of safe stay near an ionizing radiation source.

Dosimeters measure the ambient dose equivalent rate (DER) and dose equivalent (DE) of gamma and X-ray radiation, record data in non-volatile memory, have visual, audible and vibration alarms, communicate with PC via USB and exchange data with mobile devices via Bluetooth 4.0 LE (models PM1211-01, PM1211-03). Modifications PM1211-02 and PM1211-03 are equipped with GPS module.

Electronic dosimeters of PM1211 Series are recommended for officers of customs and border patrol, transport organizations, personnel of nuclear power facility, radiological and isotope laboratories, offices of Ministry of Emergency Response, police, radiation safety services of other ministries and departments and a wide range of people dealing with radiation in everyday life.

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Operation Principle
Dosimeters are designed for continuous measurement of DER and DE of X-ray and gamma radiation. Instruments produce audible, visual and vibration alarms if the preset DE and DER thresholds are exceeded, save measurements history in non-volatile memory, work up to 24 months from one battery (mod.PM1211 and PM1211-01) and up to 12 months from rechargeable LIR2450 battery (mod. PM1211-01 and PM1211-03). Additionally, dosimeters have the function of indication of current time (hours, minutes, seconds), date (date, month, year) and air temperature on the liquid-crystal display (LCD).

Instruments are easy in operation, have user-friendly interface, so can be used by untrained users.

Mode of countdown of safe stay near radiation source
When DER threshold is exceeded, PM1211 automatically switches to this mode and displays the DER value and countdown of safe stay in the current radiological environment.

The countdown is displayed in days, hours and minutes, so the user can assess the level of radiation danger and quickly make a decision about further actions – to move away at a safe distance.

This function is implemented in PM1211 Series to simplify operation with the device for:
officials of emergency organizations for rapid decision-making during primary inspection of objects with increased level of ionizing radiation;
unprepared users in the field of radiation safety.
Advantages for users:
facilitation and acceleration of the process of the radiological incidents response
high level of automatization
significant reducing of general exposure
reducing of risks of overexposure for both professionals and unprepared users
Modifications available
PM1211 – is a basic model of the instrument

PM1211-01 – is equipped with USB and Bluetooth 4.0 modules

PM1211-02 – is equipped with GPS receiver and has rechargeable battery

PM1211-03 – is equipped with Bluetooth 4.0 module, GPS receiver and has rechargeable battery

Application
Recommended for officers of customs and border patrol, transport organizations, personnel of nuclear power facilities, radiological and isotope laboratories, offices of Ministry of Emergency Response, police, radiation safety services of other ministries and departments and a wide range of people dealing with radiation in everyday life.

Specifications
Detector	Geiger-Muller tube
Dose equivalent (DE) measurement range	1 µSv – 25 Sv
Dose equivalent rate (DER) measurement range	0.1 µsv/h – 100 mSv/h
Energy range	48 keV – 3.0 MeV
DE measurement accuracy	± 15 %
DER measurement accuracy	± (10 + 0.0005/Ḣ + 0.05∙ Ḣ) %, (Ḣ – DER value)
Energy response relative to 0.662 MeV:
in the range from 0.048 – 3.0 MeV	no more than 29%
Thresholds	2 independent thresholds for both DE and DER
Alarm Type	visual and audible
Memory	non-volatile
PC communication	USB
Power supply	one lithium battery CR2450 or BR2450A 3.1 (+ 0.2; – 0.5) V
Battery lifetime:
PM1211	at least 24 months
Operating temperature	from – 40 °С to + 60 °С with battery BR2450A (from – 40 °С to – 20 °С without indication on LCD; from – 20 °С to + 60 °С with battery СR2450)
Humidity	up to 98 % at 35 °С
Atmospheric pressure	from 84 to 106.7 kPa
Ingress protection	IP54
Dimensions	128 x 48 x 20 mm
Weight	130 g (including battery)

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Electronic Dosimeter PM1211

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