Radiometer RADON-3
The αβγ-radiometer RADON-3 is a portable device for the detection of either total α-, β- and γ-radiation or only γ-radiation. The device is especially good for locating radioactive objects and alerting user about radioactivity danger.
On the top side panel the device has the easily adjustable covering the detector filter for α- and β- radiation. If the detector is closed with the filter the device detects only γ-radiation. If the filter is pushed aside the device will detect total α-, β- and γ-radiation whereas it has the direction-dependent characteristics for α- and β-radiation. This enables to locate the small α- and β-radiation sources more precisely.
The reading on the LCD shows either the dose rate or the detector pulse frequency. In parallel the device has also the sound signal giving the operator the possibility to evaluate the radiation level by the sound signals frequency. On natural radiation levels, the device displays the average measuring result of last minutes. If the radiation is above that level, the device reacts and corrects radiation measuring. User can also select precise mode to measure radioactivity in measuring spot more precisely during longer time.
The audio alarm starts if γ-radiation dose rate will exceed 10 μSv/h. Alarm point is adjustable, if required.
The pushbutton on the front panel is used for choosing measuring modes:
1. Measuring result is given in dose rate units (μSv/h).
2. Measuring result is given in pulse frequency (CPM).
3. Toggle the buzzer on/off.
4. Toggle the precise measuring mode on/off
| Radiation detector | |
| type | Geiger-Mueller |
| effective diameter | 9.1 mm |
| sensitivity | 18 cps/mR/h Co60 |
| Output signal | dose rate of γ-radiation or total αβγ–radiation in μSv/h or CPM |
Measuring units in automatically selected ranges | 0.00 – 9.99 μSv/h: 0.01 μSv/h, 10.0 – 99.9 μSv/h: 0.1 μSv/h, or 0 – 999 CPM: 1 CPM |
| Operating voltage | 9 V (ALKALINE battery) |
| Operating temperature range | - 15 ºC to + 35 ºC (at 100 % relative humidity) |
| Weight | 122 g (with battery) |
| Dimensions | 96 x 60 x 26 mm |