Sper Scientific 850068 Hybrid Powered Environmental Meter - Manual (Page 23)

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TROUBLESHOOTING
No Display:
 Ensure that you have pressed POWER
for longer than 100mS.
 Ensure that the batteries are in good
condition, have proper contact, and are
in correct polarity. When in doubt,
replace the batteries.
Display Disappears:
 If the low battery indicator appeared on
the LCD before the display
disappeared, replace the batteries.
 Disable the Auto-Off function and place
the unit in Record Mode. (Refer to
Record Mode and Auto-Off Selection
page 19).
ERROR CODES
- - - - Measurement is out-of range.
Indicates low battery, replace
batteries.