Personal dosimeter DKG-05D (gamma radiation)
Description of operation
Routine use of the dosimeters DKG-05D in the context of Automated System for Personal Dosimetry (ASPD) at facilities having a lot of radiation workers is automated as high as possible: a worker should withdraw any dosimeter from the charging unit at the entrance to the control area, insert it into the slot of the reader and than dial his/her personal ID (clock number). The reader reports the worker’s ID and dosimeter number to the computer. ASPD software checks the worker’s access code, assigns the dosimeter to the worker and sets the dose alarm threshold of the dosimeter according to (equal to) the dose limit allowed for this worker.
When worker exits the control area, he/she should again insert the dosimeter into the reader. Dose received by the worker is transferred to the computer. In case received dose is higher than the dose limit allowed for this worker, the reader will transfer the whole dose history (accumulation of dose with time).
For facilities with small number of radiation workers this procedure is to be performed by the radiation supervisor / technician.
- measurement of personal dose equivalent Hp(10) (PDE);
- measurement of personal dose equivalent rate Hp(10) (PDER).
- complies with IEC 61526 Ed. 2 (2005-02) “Radiation protection instrumentation. Measurement of personal dose equivalents Hp(10) and Hp(0.07) for X, gamma and beta radiations. Direct reading personal dose equivalent and/or dose equivalent rate dosemeters”;
- the dosimeter can store in the built-in memory the dose history including up to 1900 measurement results;
- two-way communication with the reader via IrDA или infrared interface;
- unauthorized person can not compromise measurement results by turning the dosimeter off, erasing memory or changing settings; this can be done using work station (computer) only;
- continuous setting of audible and visual alarm thresholds for PDE and PDER within full measurement range;
- charging unit for 1 dosimeter, 28 dosimeters or 56 dosimeters;
- “intellectual charging” feature extends battery life time;
- self-test for electronics and for dosimeters;
- illuminated display.
Basic complete set:
- dosimeter DKG-05D;
- operation manual.
Optional equipment and service:
- charge unit for 1 dosimeter ZU-1;
- magazine charge unit for 28 dosimeters KZU-28;
- magazine charge unit for 56 dosimeters KZU-56;
- reader US-05-01 or reader US-05B-01;
- universal reader UZS-01D with software;
- software Stand DKG-05D;
- software ASPD.
|Detectors||silicon semiconductor detectors|
dose rate Hp(10)
|0.1 μSv ÷ 15 Sv
1 μSv/h ÷ 10 Sv/h
|Energy range||0.05 ÷ 3.0 MeV|
|Audible and visual alarm|| excess of system alarm thresholds;
excess of PDE threshold 42.9 Sv and PDER threshold 42.9 Sv/h;
warnings in case of failure during self-test and battery discharge down to 3.52 V
|Audible alarm||no less than 80 dB at 40 cm|
|Visual alarm||blinking LED|
|Measurement interval||from 255 seconds down to 1 second (inversely proportional to dose rate)|
|Memory||1900 measurement results|
|Setting of thresholds||within full measurement range, stepwise by 1 μSv (PDE) and 1 μSv/h (PDER)|
|Communication of reader with computer:|
|reader US-05-01 (US-05B-01)||USB|
|Communication of dosimeter with reader||infrared interface|
|Operation temperature range (dosimeter)||minus 20 °C ÷ +45 °C|
|Humidity||up to 98 % at 35 °C|
|Power supply||rechargeable NiMH battery / 1 alkaline battery (AAA type)|
|Continuous operation time without charging the battery||more than 400 hours|
|Overall dimensions, weight||97×48×32 mm (with clip), 90 g|
|Design||hermetical shockproof plastic casing with clip for fastening to the breast pocket|