Specifications

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18. SERVICE
WARNING
SUBSTITUTION OF COMPONENTS
MAY IMPAIR INTRINSIC SAFETY.
There are no internal adjustments or
user replaceable parts.
If “Err” followed by the numbers 1
through 9 is displayed (see example
below) return unit for service. Note that
“Err” alone may be displayed during
improper field calibration.
Note: Serial number label is located
inside battery compartment.