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Dosimeters and radiometers

LLC "Axelbant"

Universal dosimeter-radiometer MKS-87 "Expert-3" (Axelbant, Russia)

Universal dosimeter-radiometer MKS-87 "Expert-3" (Axelbant, Russia)Enlarge

Sliding-scale prices

1-4 pcs per 36.600,00 руб.

> 5 pcs per 14.110,00 руб.

36.600,00 руб.

excl.Shipping costs

Out of stock.

Universal dosimeter - radiometer MKS -87 "Expert- 3" is designed to :

- Quick search of contaminated items or radioactive sources ;

- Flux density measurement of alpha particles from alpha radiation sources and from contaminated surfaces ;

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

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

- Continuous measurement of accumulation time;

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

Dosimeter is recommended in state regulation to ensure the uniformity of measurements :

- Activities in the field of environmental protection;

- Activities to ensure safety in emergency situations;

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

- Execution of a secure environment and health.

Dosimeter is a portable measuring instrument .

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

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

Used counter - "Beta- 2 ."


DER measuring range

from 0.01 to 100 microSv/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                     


Maximum permissible relative error

±25 %.

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

 1×102 - 1×105

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


Number of DER preset thresholds


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

192х64х40 mm


no more than 300 g

Completeness of the dosimeter is shown in Table


Quantity, pcs

Dosimeter MKS- 87 "Expert-3 "


USB cable


CD Software


Warranty Card


Radioactive control source (not for selling abroad) optional
Decontaminant-A (concentrate) - for removing radioactive contamination 45 ml
Plastic ziplock bags to monitor seafood 2

The warranty period for the product - 2 year calibration interval - 2 years.


Software operating instructions (rus)

Device driver

Software (rus and eng)

Our dosimeters at Fukushima (article, Russian)

Наши дозиметры на Фукусиме Наши дозиметры на Фукусиме Наши дозиметры на Фукусиме


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