Personal Gamma Radiation Dosimeter

DKG-21M

Direct reading personal dosimeter in a damp and dustproof body with a high ingress protection rating IP54, designed for use by the Army, Ministry of Emergencies and Civil Defense, and in industry 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.

To obtain information about our products during the preparation of tender or contractual documentation, please contact our representatives via the provided contacts. We continuously improve our products and expand their functionality in line with market needs by applying the latest technologies, modern components, and materials. Therefore, specifications, descriptions, and configurations are subject to change without prior notice.

Features

Storage of dose accumulation history in the non-volatile memory with real time reference
Transfer of dose accumulation history through the infrared port to the computer
Blocking the mode of power supply switch off until the data reading procedure finished
Gamma and X-ray radiation DER and DE threshold levels programming with the help of the computer or manually with control keys
Blocking certain indication modes in response to the computer command
Light and audio alarms when programmed threshold levels exceeded on DER and DE of gamma and X-ray radiation
Display automatic switch off if current gamma background is lower than the preset threshold level with instant switching on at:
- pressing any control key
- gamma background increase above the preset threshold level
- alarm clock ringing
Periodic self-testing of batteries and detector
Energy-compensated Geiger-Muller counter
Ingress protection rating IP54
Clock, alarm clock
Software allows to:
- program parameters and operating modes
- read dosimetric measurement results
- review and print dosimetric information as reports
- save and export read information as a report or text file for further processing by other text editors
- import previously stored dosimetric information for processing and analysis

Purpose Of Use

Measurement of individual dose equivalent (DE) of gamma and X-ray radiation
Measurement of individual dose equivalent rate (DER) of gamma and X-ray radiation

Delivery Kit

personal gamma radiation dosimeter
screwdriver
operating manual
package

Measurement range of gamma radiation individual dose equivalent rate (DER)

0.1 µSv/h … 1 Sv/h

Main relative permissible error limit when measuring gamma radiation DER with a confidence probability of 0.95:

- in the range from 1 … 10 µSv/h (inclusive)

20 %

- in the range from 10 µSv/h to 1 Sv/h

15 %

Measurement range of gamma radiation individual dose equivalent (DE)

0.001 ... 9 999 mSv

Main relative permissible error limit of gamma radiation DE measurement with confidence probability of 0.95

15 %

Permissible additional relative error of the measurement result of exposure dose rate (EDR) and individual equivalent dose (IED) due to ambient temperature variation from –20 °C to +50 °C

5 % per each 10 °С of deviation from 20 °С

Energy range of detected gamma radiation

0.05 … 6 MeV

Energy dependence when measuring DER and DE in the energy range from 0.05 MeV to 1.25 MeV relative to the energy of 0.662 MeV, not more than

±25 %

Anisotropy when gamma-quanta fall within a solid angle of ±60° relative to the main measurement direction (perpendicular to the rear cover of the dosimeter marked with “+”), not more than:

- for radionuclides ¹³⁷Cs and ⁶⁰Co

25 %

- for radionuclide ²⁴¹Am

85 %

Time to establish operating mode when measuring DER in the range:

- from 1∙10⁻⁶ Sv/h to 5∙10⁻⁶ Sv/h (inclusive), not more than

30 min

- from 5∙10⁻⁶ Sv/h to 2∙10⁻⁵ Sv/h (inclusive), not more than

5 min

- from 2∙10⁻⁵ Sv/h to 1 Sv/h, not more than

3 min

Continuous operation time of the dosimeter powered by new batteries under normal background radiation conditions, not less than

4 000 h

Instability of readings during 8 h of continuous operation, not more than

5 %

The dosimeter is powered by a lithium galvanic cell with direct current (DC) voltage

2.4 … 3.2 V

Operating supply voltage

3 V

Overall dimensions of the dosimeter (excluding clip dimensions), not more than

98 × 58 × 18 mm

Weight, not more than

0.14 kg

CE Declaration of Conformity

Type Examination Certificate

Personal Gamma Radiation Dosimeter

DKG-21M

Features

Purpose Of Use

Delivery Kit

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