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1.4.2 Principle of operation
The dosimeter uses an energy-compensated Geiger-Mueller counter as detector which
converts photon radiation quanta to electric pulses to measure DER and DE of photon radiation.
Processing of detector pulses, control over the LCD, control buttons, sound and vibration
alarms is performed by the dosimeter’s built-in microcontroller.
The dosimeter’s operating algorithm ensures continuous measurement process, statistical
processing of the measurement results, fast adaptation to variations in radiation intensity
(measurement time is in inverse relation to radiation intensity) and timely display of acquired data
on the LCD.
The dosimeter’s internal permanent memory accumulates and stores dosimeter information
which can be downloaded to computer.
The dosimeter features USB interface for data exchange with computer.
The dosimeter is powered by a built-in rechargeable battery. The battery is charged via USB
interface using USB charger or computer USB port.
1.4.3 Operation modes
The dosimeter features the following operation modes:
- DER measurement;
- DE measurement;
- settings;
- indication of current time;
- indication of battery status;
- re-start DER measurement;
- communication with computer.
Operation of the dosimeter in the above listed modes is described in Section 2.
The dosimeter continuously monitors it battery status in any operation mode (2.2.9).
The LCD backlight can be activated in any operation mode (2.2.9).
1.5 Marking
The face panel of the dosimeter is marked with the manufacturer’s logo.
The rear panel of the dosimeter is marked with:
- manufacturer’s logo and name;
- dosimeter model;
- dosimeter serial number;
- ingress protection rating (IP);
- dosimeter’s detector center.
1.6 Packing
The dosimeter is packed in a plastic bag and is supplied in a cardboard box together its
operation manual and delivery kit.
