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As soon as the measurement is started the measurement results of photon-ionizing
radiation DER (7) and the statistical error values (1) that correspond to these results begin
to be formed on the LCD.
If the DER measurement results exceed the alarm threshold level (10), the radiometer
sends a two-tone audio signal and starts blinking with the red LED "ALARM" (11).
Measurement results start blinking on the LCD of the radiometer. Periodic and gradual
(from left to right) highlighting of the sound symbol segments (4) serves as an indication
of the threshold level exceeding as well (Figure 3).
The twelve-segment indicator of instantaneous value (3) is used for fast evaluation of
photon-ionizing radiation intensity. The integration time during measurement of the
instantaneous intensity value and the time of information update on the instantaneous value
indicator are equal to 500 ms.
The instantaneous intensity value is displayed in pseudo-logarithmic scale. The first
segment of the indicator becomes highlighted when the intensity corresponds to 2 pulse/s
pulse rate from the gamma and beta detector. The greater photon-ionizing DER
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