Figure 12 – Information about the manufacturer
- by pushing the button
«<»
or the button
come back to the Main menu.
2.3.3. Browsing the software version
The current software version is displayed
in the Main menu (Fig.7) (see the line «ВЕРСИЯ
ПО (VERSION SW)».
2.3.4. The operation procedure
2.3.4.1. Prepare the product for working and ensure it’s in the Measurement mode (there
should be the picture on the screen like in the Figure 6). After switching on, the product will start
the assessment of the radiological situation.
2.3.4.2. Every quantum of radiation captured by sensor is accompanied by the audio signal
if you have chosen the value
«ВКЛ»
setting the option
«ЗВУК ДАТЧИКА (SENSOR
SOUND)».
The audio-signals frequency is proportional to the ambient dose rate.
After 10
seconds you’ll see the first result on the display.
2.3.4.3. The short measuring cycle equals 10 seconds. It’s intended to get the preliminary
result of the ambient dose rate quickly. To get higher-precision result the product needs to collect
statistics for 10-300 seconds of measuring. The measuring and averaging cycle can be started
again by pushing the button
in the Measurement mode. By doing it the collected statistics
will be reset. It may be useful if it’s necessary to estimate the radioactive pollution of any things
or foods, etc., quickly.
2.3.4.4. With increase of the ambient dose rate the proportional increase of the audio signal
passing frequency occur. At the same time the ambient dose value is raising in the
upper right corner of the screen and the columns at the radiation environment time based
historical graphs are going up.
2.3.4.5. When the measured values of the ambient dose rate are small (at the natural
radiation level) there may be the spread in values. The reason for this is that the natural radiation
level has the low density of particle flux and electromagnetic energy. The lower the density of
the flow, the fewer particles are detected by the sensor per unit of time.
Note. The natural photon radiation background in Russia is usually ranging from 5 to 60
µR/h (from 0,05 to 0,6 µSv/h), so there is a wide range of values.
2.3.4.6 If the ambient dose rate value is near-critical (10000 µR/h or 100 µSv/h) you must
leave contaminated ground immediately and report its position to the corresponding public
service.
2.3.4.7. Radiation safety audit of residential and public places.
According to the «Radiation safety standards (RSS-99)» protective measures should be
taken in buildings then the ambient dose rate of gamma-radiation indoors exceeds the ambient
dose rate outdoors by more than 0,2 µSv/h (20 µR/h).
Outdoors the ambient dose rate should be measured at no less than 5 points located at the
distance ranging from 30 to 100 meters from the buildings and not closer than 20 meters to each
other. The points of measuring should be chosen at the location with natural bottom without any
anthropogenic developments (road metal, sand, asphalt) and radioactive pollution. While
