Personal radiation dosimeter

DKG-24 PRD GUARDER

PRD GUARDER belongs to spectrometric devices and is used to detect and localize radioactive and nuclear materials by their gamma radiation in order to prevent their illegal transfer. This device is also used at enterprises and institutions where personnel work with sources of gamma radiation.

Due to the device adaptive configuration, customer can choose the following equipment options:

high-sensitivity scintillation detector with a volume of 9 cm³, 5 cm³ or 0.7 cm³
without additional low-sensitivity scintillation detector
without GPS/GNSS receiver
without the wireless channel

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

Highly sensitive, compact and lightweight device
Graphic monochrome display with backlight
Light, sound, vibration alarm
Easy to operate with only 3 buttons (designed for use in protective gloves)
Powered by 2 galvanic cells / AA batteries or via USB cable
Built-in GPS / GNSS receiver:
- automatic data logging by time or distance
- automatic time synchronization
Built-in wireless channel – smartphone connection via Android OS
PC connection via USB
Determining the direction toward the source of gamma radiation
Capability for remote software update
Wide range of available built-in detectors based on scintillator-silicon photomultiplier

Purpose of Use

Measurement of ambient dose equivalent rate (DER) of gamma and x-ray radiation (photon-ionizing radiation)
Measurement of ambient dose equivalent (DE) of gamma and x-ray radiation
Determining gamma radiation intensity
Storing results in non-volatile memory

Delivery Kit

personal radiation dosimeter
connecting cable (USB shielded)
“Spectra Reader” software (on a mini CD)
housing
2.5 mm hex L-shaped key
operating manual
case

Note. The device is supplied with two alkaline batteries. Nickel-metal hydride batteries and a charger for charging them
are supplied optionally.

The general range of indication and measurements of photon ionizing radiation DER:

- indications

0.01 … 10⁷ µSv/h

- measurements from HSSDU

0.01 … 50 µSv/h

- measurements from the LSSDU

50 … 10⁷ µSv/h

The general range of indication and measurements of photon ionizing radiation DE:

- indications

0.1 … 9.9·10⁶ µSv

- measurements

1 … 9.9·10⁶ µSv

The indication range of photon ionizing radiation counting rate

1 … 1 000 000 cps

Main relative permissible error limit when measuring photon ionizing radiation DER with a confidence probability of 0.95 (¹³⁷Cs)

- in the range from 0.01 μSv/h to 1 μSv/h

(15+2/М) %, where M is a dimensionless value that is numerically equal to the DER value measured in μSv/h

- in the range from 1 μSv/h to 10⁷ μSv/h

15 %

Main relative permissible error limit when measuring photon ionizing radiation DE with a confidence probability of 0.95 (¹³⁷Cs)

15 %

Energy range of photon ionizing radiation being detected

0.02 … 10 MeV

Energy dependence of the device readings when measuring photon ionizing radiation DER and DE in the energy range from 0.05 MeV to 3 MeV relative to the energy of 0.662 MeV (¹³⁷Cs)

±25 %

Anisotropy for HSSDU and LSSDU detectors when gamma radiation falls on them in directions at angles from +60^o to -60^o in the horizontal and vertical planes relative to the main measurement direction, marked with “+” symbol, should not exceed:

- for isotopes ¹³⁷Cs and ⁶⁰Co

±30 %

- for ²⁴¹Am isotopes

±75 %

Time of operating mode setting of the device, no more

1 min

Calibration time by gamma background level

10 … 90 s

The response time to over ten-fold change in photon ionizing radiation DER

0.25 s

Rated supply voltage of the device from two galvanic cells (AA):

- lithium and alkaline

3 V

- nickel metal hydride batteries

2.4 V

- from the USB port

5 V

Time of continuous operation of the device when powered under the conditions of gamma radiation background of no more than 0.5 μSv/h:

with the display backlight off, the alarm deactivated, and both the navigation receiver and wireless channel turned off, not less than:

- for two new FR6 type lithium batteries or two new Energizer Max E91 alkaline batteries

400 h

- for two new, fully charged nickel-metal-hydride batteries with a capacity of 2700 mAh

300 h

with the display backlight turned off, the alarm not activated, the navigation receiver and the wireless channel turned on, no less than:

- for two new FR6 type lithium batteries or two new Energizer Max E91 alkaline batteries

55 h

- for two new, fully charged nickel-metal-hydride batteries with a capacity of 2700 mAh

40 h

Operating temperature range

–20 … +60 °С

Dimensions without case cover, not more

60 × 110 × 30 mm

Weight without case cover, not more

0.21 kg

Operating Manual

CE Declaration of Conformity

Type Examination Certificate

Personal radiation dosimeter

DKG-24 PRD GUARDER

Features

Purpose of Use

Delivery Kit

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