Full Product Manual
User Manual
RHDL30/RHDL40
PDF Dataloggers
Display
REC: flashes every second when in logging mode. For Program Start Delay:
REC is displayed but does not flash during standby status.
T1: is Air Temperature (T2 is for Probe – N/A on these models)
H/L: High and Low Set Point Limit exceeded Indicator
°C/°F Temperature units of measure
Measured Temperature, Humidity or Pressure. Toggle Rate is
every 5 seconds.
MXMN: MAX/MIN Readings
Low battery indicator
Faceplate (Buttons and LED Indicator)
MAX/MIN: Press to view MAX or MIN Values of all logged data.
LED Indicator: LED will flash GREEN every 10 seconds when logging is started and RED if
any Low or High alarms have been tripped during a log session
START/STOP: Once batteries are installed. Pressing this button will POWER ON and OFF
the logger. After Programming, Pressing and Holding for 5 seconds will Start and Stop
the logging. In logging mode a short press will not turn OFF the logger.
MARK: To mark an event manually during the measurement period, press the MARK
button for 2 seconds until the measured data flash three times. This MARK function is
usually used when there is a transition, from one location to another. At most 8 marks
will be identified in the PDF report.
Short press MARK button any time can also display the leftover battery life time as a
quick reference. However, precise battery life time is still decided by operation
condition & battery brand.