Ludlum Measurements 3000 - Page 23

Model 3000 Survey meter User’s Manual Section 2
Ludlum Measurements, Inc. Page 2-13 April 2021
 If an alarm condition occurs, the ALARM display indicator will turn
on. Alarm audio will sound after the count is completed if the result
is over the alarm threshold. (If the count unit is an averaged rate, it is
possible for the ALARM icon to come on during the count, but if
the averaged rate falls below the alarm threshold by the end of the
count, no ALARM will be active.)
 If other operational modes are available, tapping the MODE
button will cancel the current Count Timer and move to the next
available operational mode.
When the Count Timer has finished:
 The display will show the accumulated total for c, d, R, and Sv, the
timed ratemeter average for cps, cpm, Bq, dpm, or the average
exposure or average dose in R/h and Sv/h.
 Tapping the UNITS button will switch between the Primary and
Secondary Count Units.
 Doing a long press (pressing the button and for at least a half
second) to the ON/OFF button will reset the Count Timer.
 If an alarm condition occurred during the Timed Count, a
continuous audio tone will sound, and the ALARM display indicator
will turn on. Tapping the ON/OFF button once will acknowledge
and turn off the continuous tone alarm audio. Doing a long press
(pressing the button and releasing for at least a half second) to the
ON/OFF button will clear the alarm condition and reset the Count
Timer. Alarm audio will sound after the count is completed if the
result is over the alarm threshold.
 If other operational modes are available, tapping the MODE button
will move to the next available operational mode.
Figure 10: COUNT mode operation showing COUNT Timer of 5 minutes, 30
seconds.