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Dosimeters and radiometers

LLC "Axelbant"

Dosimeter-radiometer "EXPERT-M2" MKS-83B (Axelbant, Russia)

Dosimeter-radiometer "EXPERT-M2" MKS-83B (Axelbant, Russia)Enlarge

24.000,00 руб.

excl.Shipping costs

Dosimeter - radiometer MKS - 83B "Expert-M2" is intended to :

- Continuous measurement of personal dose equivalent (hereinafter - ED) external gamma and X-ray (hereinafter - the photon ) radiation;

- Continuous measurement of accumulation time and display accumulation time;

- Measurement of ambient dose equivalent rate of photon radiation (hereinafter - DER ) external photon ( X-ray and gamma ) radiation;

- Flux density of beta - particle sources and beta radiation from contaminated surfaces;

- Indication of the density of alpha particles from sources of alpha radiation from contaminated surfaces;

- Quick search of contaminated items or radioactive sources;

- When completing the measuring cuvette - the measurement of the volumetric activity by Cs (gamma ) and Strontium-Yttrium (beta) of samples of water, soil, food, plant products, etc.;

- Indication of the date, time and ambient temperature;

- When connected to a computer - the chronology of events indicating the accumulation of ED and general statistics measuring device programming;

- Graphical representation on the own indicator of stories of the dose rate measuring;

- Measurements area illumination with built-in LED flashlight ;

-  When connecting external detection units, the measuring capabilities of the device is greatly enhanced.

Dosimeter is recommended for:

-  Field activities in the of environmental protection;

- Implementation of security activities in emergency situations;

- Implementation of the production control of compliance with the legislation of the Russian industrial safety requirements for operation of hazardous production;

- Work to ensure a safe environment and health.

Dosimeter has bilingual (English/Russian ) inside the settings menu.

Power supply from the built lithium-polymer battery , which is charged via USB-port.

Used counter - "Beta-5".

Technical characteristics:

DER measurement range

from 0.01 microSv/h to 100 Sv/h

ED measuring range

from 0.01 to 999 Sv

Accumulation time display step:

when connected to the PC:

1 h

 1 min

Photon energy range during the measurement of the dose rate

from 0.04 to 3.0 MeV

Energy dependence when measuring dose and dose rate of photon radiation relative radiation of Cesium-137 %

 ± 30 %

Anisotropy of sensitivity for cesium -137 and americium -241 in the angle 4p, within %


Range of flux density of beta - particles from contaminated surfaces (strontium -90 , yttrium -90) ppm/(Cm2 × min)

3 – 104

Beta radiation detected energy lower limit, not higher, MeV 


Measuring range of volumetric activity of samples with a density of 0.08 to 1.2 g/cm, Bq/ml (Bq /g):

cesium- 137

strontium -90 + yttrium -90


1×101  -  2×104

2,5     -  5×103

Maximum permissible relative error

±25 %.

Range of flux density indication of alpha particles from contaminated surfaces (plutonium -239 ) ppm/(Cm2 × min):

1×10 53

Maximum permissible relative error


Range of flux density indication of alpha particles from contaminated surfaces (plutonium -239 ) ppm/(Cm2 ×


Lower limit of the energy of the detected alpha particles, no more, MeV 


Number of DER preset threshold


Number of ED preset thresholds 


DER thresholds setting range

throughout all the range

ED thresholds setting range

throughout all the range

Instability of the dosimeter for 24 hours of continuous operation

±10 %.

Reaction time to sudden changes in the level measured velichiny (more than 10 times on the natural background )

1 sec

Continuous operation from a fully charged battery (when measured at the level of natural background radiation , without using of the backlight and Bluetooth module)

at least 120 hrs

Power supply from the built lithium polymer battery, nominal voltage 3.7V, or miniUSB connector when connect to any PC or charger via USB output 

The archive

up to 3276 records (time and date, the measured value)

Full charging time

no more than 4 hours

Additional relative error of the temperature varies from -20 to +50 ° C

±10 %.

Additional relative error due to humidity changes from normal to 98% at 35 ° C

±10 %

Operating conditions

- Ambient temperatures from minus 15 to plus 50 ° C ;

- Relative humidity not more than 98% at temperature 35 ° C ;

- Atmospheric pressure from 84 to 106.7 kPa.

Overall dimensions

240x78x75 mm


no more than 500 g



In addition to all the devices we supply:
- Decontaminant-A (concentrate ) - for removing radioactive contamination , 45 ml
- Plastic ziplock bags to monitor seafood

 English versions of device and software manuals is being produced.<

Dosimeter-radiometer "EXPERT-M2" MKS-83B (Axelbant, Russia)Enlarge  Dosimeter-radiometer "EXPERT-M2" MKS-83B (Axelbant, Russia)Enlarge 


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