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2.3.3. Measurement mode
In the measurement mode the
instrument displays the current
value of gamma radiation dose
equivalent rate in μSv/h, mSv/h or
Sv/h (μR/h, mR/h or R/h), while the lower line
indicates an average neutron count rate in s
-1
(counts per second). In this mode the instrument
alarms only if the safety threshold is exceeded and
does not adjust alarms to the changing
background.
In this mode, the instrument is not capable for
searching for neutron radioactive sources.
NOTE
: The
PM1703GNA-II and PM1703MA-II
are
calibrated in collimated Cs-137 radiation only, thus, its
readings in measurement mode may differ from that
of energy compensated dosimeters.
2.4. Low battery indication
When the battery voltage drops below critical value
(1.2 volts), the instrument LCD will indicate a low
battery sign , periodically provide white light
blinking for a couple of seconds and alarms will go
off (audio, light and/or vibration). By pressing the
MODE button the user can mute the “critical low
battery” warning for about 30 minutes. At the same
time the alarm thresholds will remain turned on.
NOTE:
The instrument can work up to 8 hours after the
critical low battery warning
.
It is highly
recommended to replace/charge battery as soon as
possible in this case.
2.5. Safety Alarm Threshold
The instrument is equipped with Safety Alarm
threshold to alert user when immediately
dangerous for life radiation level is reached. Red
light alarm in search mode will be superseded with
easily distinguishable periodic visual white
