ECOTEST STORA-TU RKS-01 Operating Manual page 61

rate from the gamma and beta radiation detector. Beta-particles flux density is about
min) in this case if gamma background is not increased.
3 2
4010 part./(cm
The sound symbol (4) means that audio signaling of registered gamma quanta
and beta-particles is on. If signaling is on, this symbol is displayed on the LCD, and
each registered gamma quantum or beta-particle is followed by a short audio signal.
Audio signaling of registered gamma quanta and beta-particles is switched on
and off in the submode of alarm threshold level programming.
Surface beta-particles flux density is measured in a similar way to photon-
ionizing radiation DER measurement. As soon as the measurement is started the
LCD of the radiometer begins to display the measurement results and the statistical
error values that correspond to these results. In the process of measurement the
statistical error of each next measurement result becomes smaller, and in some time
it reaches the specified statistical error. If this error is reached, a part of statistical
information starts to be rejected while the measurement process continues.
Therefore, all the following measurement results will have the statistical error, which
is equal to or less than the specified one.
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