Data logger manual – Dwyer DLI-H User Manual
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Data Logger Manual
Page 33
Power Supply Cable Slot
Section 9: Maintenance
 
The DLI-H does not have any user-serviceable parts except the battery 
which should be replaced periodically. The battery life is affected by 
battery type, ambient temperature, sample rate, sensor selection, offloads 
and LCD display usage. The DLI-H has a battery status indicator on the 
LCD display. If the battery indication is low, or if the device seems to be 
inoperable, it is recommended that the battery be changed.
To change the battery, locate and remove the four (4) 3/32 hex screws on 
the back of the unit. Separate the halves and the battery compartment is 
now visible. Remove the old 9V battery from the battery clips and replace 
with a new 9V battery. Dwyer recommends using 9V lithium battery. An 
alkaline battery is acceptable, but will yield a shorter battery life.
For any other maintenance or calibration issues, Dwyer recommends the 
unit be returned to the factory for service. Before returning the device, 
you must obtain an RGA from the factory. For further information, please 
contact Dwyer at:
Dwyer Instruments, Inc
.
P.O. Box 373, 02 Indiana Hwy. 22
Michigan City, IN 4636 USA
TEL: (29) 879-8000
•
FAX: (29) 872-9057
www.dwyer-inst.com
BATTERY WARNING
 Most Dwyer data loggers contain a lithium battery. Do 
 not cut the battery open, incinerate, or recharge. Do not heat 
 lithium batteries above the specified operating temperature.* 
 Dispose of the battery in accordance with local regulations. 
*See the individual specification sheets at www.dwyer-inst.com.
