Model 702i and 711i
Technical Manual
Section 7
Ludlum Measurements, Inc.
Page 7-3
December 2018
Figure 7 -
Dial Search Mode Screen
The main purpose of the
Dial
screen is to provide a quick visual indication, similar to that given by a
handheld dosimeter or Geiger counter, showing the amount of radioactivity being measured. When
the dial pointer is in the gray area, there is little radioactivity present. Most of the counts are coming
from either cosmic rays or naturally occurring sources such as
40
K.
Once the pointer moves up into the green area there is an indication of some unusual activity.
Within the green area, an
Identify
operation should be started. Finally, if the pointer moves into
the red area, the activity is too high for a correct identification. It is
strongly advised
that you move
back from the radioactive source, if at all possible, before attempting to identify it.
Figure 8 -
Finder Search Mode Screen
