Thermo Scientific RadEye PRD-ER Operating Instructions Manual page 14

Within the RadEye PRD-ER the relation 1 R = 1 rem =10 mSv is
used.
Regardless of these sophisticated details of the dose and
dose rate calculation (which is if very limited importance
for gamma radiation above approximately 150 keV), it is
highly recommended to operate the unit in count rate
mode in order to fast response to small amounts of incre-
mental radiation. Even while displaying and alarming on
count rate, dose and dose rate calculation and alarm is provid-
ed according to a permanent analysis of the radiation energy
and intensity, which however cannot be as fast as the surveil-
lance of the count rate.
For retrospective analysis the last 1600 mean and maximum
values of the dose rate and count rate are recorded internally
and can be read out via serial interface.
Additionally the RadEye PRD-ER logs the last 250 alarms,
errors and changes of the configuration. All events can be read
out via serial interface. A real time clock is provided to add a
time stamp to all stored measurement data.
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