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2.3.6.7.2.3 The LCD of the dosimeter displays the following in this mode
(Figure 2.23):
- "α" symbol (1) – radiation type being measured;
- measurement result (2);
- dimension of measurement result (3);
- estimated limits of expected relative statistical deviations (5) of the
measurement result (4) given 0.95 confidence probability, hereinafter referred to as
the estimated limits of statistical deviations;
- instantaneous value indicator (5).
- battery status symbol (6);
- navigation receiver status symbol (7);
- symbol of gamma quanta, alpha or beta particles sounding status (8);
- sign (10) of critical filling of the dosimeter's nonvolatile memory, where DE
accumulation history is stored (2.3.4 of this OM).
2.3.6.7.2.4 After the measurement start, measurement results of alpha
radiation characteristics (2) and estimated limits of statistical deviations (4) of these
results begin to be generated on the LCD. Measurement results are updated every 2
seconds.
If the measurement results exceed the alarm threshold level, the dosimeter
generates a two-tone audio signal and blinks with the ALARM LED. The
measurement results are blinking on the LCD of the dosimeter.
If measurement results exceed the upper limit of measurement range by more
than 30 %, "пппп" symbols are displayed on the LCD instead of the measurement
results.
In the event of alpha radiation characteristics measurement, the dosimeter can
operate with three independent threshold levels. One is expressed in 1/(cm
∙min)), the second one - in Bq/cm
3
2
(10
/(cm
Measurement results are compared only with one threshold level, the measurement
units of which correspond to the selected measurement units of the results. Only this
threshold level can be viewed or changed.
Figure 2.23 – LCD of the dosimeter
(measurement of beta radiation characteristics)
2
2
, (kBq/cm
), the third one - in cps.
63
∙min),
2
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