9
Mode
Regular Range
X1000 Range
mR/hr .001-110 NA
µ
Sv/hr .01-1100 NA
CPM
0-9999
10,000-350,000
(displayed as 10.00-350,
with X1000 indicator)
CPS
0-3500
NA
Total/Timer 0-9999
10,000-9,999,000
(displayed as 10.00-9999,
with X1000 indicator)
Maximum level.
When the maximum level for the current mode is
reached, the Radalert 100 beeps for three seconds, pauses for three
seconds, and repeats that pattern. The numeric display flashes.
The beeping pattern and the flashing continue until the level
decreases or the Radalert 100 is turned off.
Display update and response time.
In Total mode, the numeric
display is updated each second. In the dose rate modes, the
numeric display is updated every three seconds. When the
radiation level is less than 1,000 CPM, the reading in any of the
dose rate modes is based on the radiation detected in the
immediately previous minute. In order to give a quicker response
to changes, when the radiation level exceeds 1,000 CPM, the
reading is based on the previous 3 seconds, as shown in the
following table. This automatic change in response time is called
auto averaging.
Radiation level
Basis for reading
<1000 CPM or 1 mR/hr
1 minute
>1000 CPM or 1 mR/hr
3 seconds