
6 7
English
6. LEDreadings
Note: TheLED flash interval is factory-installed to 10 seconds but can be changed from
10 seconds to 20 or 30 seconds with theaccompanying software “Datalogger Graph” to save
battery energy. LEDflashing for anactivated alarm can be shut off with theaccompanying
software to save battery energy.
LEDs Indicates Function
REC ALM
No LED showing. Battery not installed or
completelyempty. Install or
change battery.
REC ALM
1. Green flashes every 10 seconds.
(Measurement taking placeand alarm is
not activated).
2. Green double flash every 10 seconds.
(Manual start is activated in software but
data logger has not started).
1. Working normally.
2. Press theyellow button on
thedata logger. Thegreen
and yellow LEDs flash
once simultaneously and
measurement then starts.
REC ALM
1. Red flashes every ten seconds.
(Measurement taking place and alarm for
low RH has been activated). Ifalarm for
both temperature and air humidity have
been triggered, theLED flashes alternately
every othertime.
2. Red double flash every ten seconds.
(Alarm for high RH is activated).
Ifthealarm for both temperature and
humidity has been triggered, theLED
flashes every othertime.
3. Red flashes every ten seconds (Bad Battery).
1. Working normally.
2. Working normally.
3. Measuring stops automatically
when battery isempty. Saved
data remains even if battery is
depleted. Replace battery and
then connect data logger to
aPC and transfer saveddata.
TheDatalogger Graph program
is needed to transfer data and
to later start data logger to
resume measurements.
REC ALM
1. Yellow flash every ten seconds.
(Measurement taking place and alarm for
low temperature has been activated). If both
temperature and humidity alarms have been
activated, theLEDs flash alternately every
othertime.
2. Yellow double flash every ten seconds (High
temperature alarm has been activated).
Ifboth temperature and humidity alarms
have been triggered, theLED flashes every
othertime.
3. Yellow flash every 60 seconds (Data
logger’s memory is full).
1. Working normally.
2. Working normally.
3. Transferring data to PC.
REC
ALM