Direct reading personal dosimeter in a damp and dustproof body with a high ingress protection rating, designed for use by the Army, Ministry of Emergencies and Civil Defense in conditions of significant temperature oscillations and high dustiness of atmosphere.

It can be used either independently or within the automated system of personal dosimetry control. The dosimeter allows storing dose accumulation history with real time reference in the non-volatile memory, and communicating it to the computer. If the programmed threshold levels of gamma dose or its rate are exceeded, light and audio alarms are actuated.

DKG-21M is in operational service with the Ukrainian Army, and is successfully used by the Army and the units of the Ministry of Emergencies of Kazakhstan.



– pressing any control key;

– gamma background increase above the preset threshold level;

– alarm clock ringing.

Measurement ranges and main relative errors:
– gamma and X-ray radiation individual dose equivalent rate HP(10) µSv/h 0.1…1 000 000;
(1…10 µSv/h; ±20%;10
µSv/h…1 Sv/h; ±10%)
– gamma and X-ray radiation individual dose equivalent HP(10) mSv .001…9 999;
Energy range of registered gamma and X-ray radiation and energy dependence MeV 0.05…6.0;
(0.05…1.25; ±25%)
Recording resolution of dose accumulation history in the nonvolatile memory minutes 5…255
Time of data storage in the nonvolatilememory years not less than 10
Data exchange rate through the infrared port bit/s 38 400
Positive data exchange distance between the dosimeter and the infrared port adapter m not more than 0.3
Lithium battery (CR2450) life* hours 2 200
Operating temperature range °C -20…+50
Weight kg 0.14
Dimensions mm 56x96x16

* under gamma background not more than 0.3 µSv/h, switched off alarm system