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LED Status Indication 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

To save power, the RHDL50’s LED flashing cycle can be changed to 20s or 
30s via the supplied software. 

 

 

To save power, alarm LEDs for temperature can be disabled via the 
supplied software. 

 

 

When  the  battery  is  low,  all  operations  will  be  disabled 
automatically. NOTE: Logging automatically stops when the 
battery weakens (logged data will be retained). The supplied 
software  is  required  to  restart  logging  and  to  download 
logged data.

 

 

 

When both temperature and relative humidity readings 
exceed alarm level simultaneously, LED status indication 
alternates every other cycle. 

Summary of Contents for RHDL50

Page 1: ...User Manual RHDL50 Humidity and Temperature Datalogger...

Page 2: ...other applications The data logger is supplied with a long life lithium battery which can typically allow logging for one year This meter is shipped fully tested and calibrated and with proper use wi...

Page 3: ...rt button 4 RH and Temperature sensors 5 LCD Display 6 Alarm LED red yellow 7 Record LED green 8 Mounting clip LCD Display 1 Short press the button change the display Temperature units change by the P...

Page 4: ...plied software When the battery is low all operations will be disabled automatically NOTE Logging automatically stops when the battery weakens logged data will be retained The supplied software is req...

Page 5: ...tall the supplied Windows PC Datalogger Software by placing the supplied program disk in the PC s CD ROM drive or by downloading the program from the http Extech com instruments software asp web page...

Page 6: ...RHDL50 is connected to the USB port the battery inside the device is discharged at a higher rate than normal To conserve battery life do not leave the RHDL50 connected to the USB port for a prolonged...

Page 7: ...utomatically connect and connection status is shown at the lower left hand corner of the screen Click on Help and About to view the version number MENU BAR DESCRIPTION The main menu for the software a...

Page 8: ...LOGGER SETUP The CURRENT TIME field will automatically synchronize with the PC date and time setting...

Page 9: ...e user to set high and low temperature and humidity limits and to disable the flashing of the RHDL50 s LEDs thereby conserving battery energy Once the changes have been made click on the SETUP button...

Page 10: ...rted by pressing and holding the device s yellow button for approx 3 seconds or until the two LEDs on the RHDL50 flash at the same time Logging will continue at the programmed sample rate until the nu...

Page 11: ...DOWNLOADING DATA NOTE Additional Software Instructions can be found in the HELP Section of the Software for Printing Saving and Exporting to CSV file...

Page 12: ...ture Overall Range 40 to 158o F 40 to 70o C Accuracy 40 to 30 and 60 to 1 5o C 70o C Accuracy 10 to 40o C 1o C Accuracy 40 to 14 and 104 to 3 6o F 158o F Accuracy 14 to 104o F 1 8o F Dew Point Tempera...

Page 13: ...ior to logging critical data The RHDL50 does not lose its stored readings when the battery weakens or when the battery is replaced the data logging process will however be stopped and cannot be re sta...

Page 14: ...rrants to the original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of 1 one year from the date of purchase This warranty does not...

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