Dosimeter “Valday” is intended for measurement of gamma-radiation dose and its rate, for indication of counting rate, for land navigation by means of an inbuilt electronic compass, and for illumination with the help of an inbuilt flashlight.
The device power is performed by a single LIB 18650.
The continuous work time with a 3 AHr capacity battery is not less than 60 days (not including using of the flashlight and illumination).
The external device communication is conducted through Bluetooth.
Battery discharge prevention is provided.
The device case is made of aluminium and plastic.
The device case is water-proof (IP67).
Display of information about gamma-radiation dose rate with indication of measurement error; Display of information about accumulated dose of gamma-radiation with indication of accumulation time;
Sound indication of gamma-radiation sensors actuation; Sound and light signalization of the excess of gamma-radiation dose and its rate limits set by the operator;
Date and time display; Second-meter, timer, alarm-clock;
Display of a compass, or direction to the north / to preselected course; Two modes of the flashlight.
|Range of dose rate||0,1 mcSv/h … 20 mcSv/h|
|Range of dose indication||0,01 mcSv … 100 Sv|
|Energy range||0,05 … 3 MeV|
|Dose rate measurement error where H is a non-dimensional quantity numerically equal to the measured value of dose rate in mcSv/h Dose measurement error 15%||(15+3,5/H)%,|
|The compass shows direction with accuracy to 10 degrees.|