Omega Engineering OM8828 用户手册

    - Stands for RECORD

For model without LCD : OM8800D or OM88128 
"REC" is flashing while logging the temperature records
               "REC" LED will stop flashing after complete recorded or
               battery is out of power .
               REC green light will flash every second ( OM8800D ) . 
               REC green light will flash every 5 seconds when sample 
               interval is set over 5 seconds (OM88128) . 
For model with LCD : OM8828 or OM8829 
Both "REC" green light and "REC" indicator will active and display
on the screen per every set sample interval . For example , if you 
set sample interval less than 5 seconds , the REC light will 
flash per set second , otherwise, will flash every 5 seconds .
               
 

    - Stands for ALARM 

"ALM" is flashing while recorded value is higher than set HI or 
less than LO setting , the logger alarm designed is not audible ,
but for reminding or warning the user to do necessary action .

 

For model without LCD : OM8800D or OM88128 
"ALM"   "ALM" LED will stop flashing after downloading to a PC
               or battery is out of power .
               ALM red light will flash every second ( OM8800D ) . 
               ALM red light will flash every 5 seconds when sample 
               interval is set over 5 seconds (OM88128) . 
For model with LCD : OM8828 or OM8829 
Both "ALM" red light and "ALM" indicator will active and display
on the screen per every set sample interval . For example , if you 
set sample interval less than 5 seconds , the ALM light will 
flash per set second , otherwise, will flash every 5 seconds .