Oakton Type J - Field Calibration Lockout and Re-Enable

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17. FIELD CALIBRATION LOCKOUT
AND RE-ENABLE
T he calibration locko ut featur e prev ents
any fie ld cali brati on chan ges. T he locko ut
remains in e ffect unti l a locko ut re-
enable
has been performed . Use the
follo
wing procedures to lo ckout or re-
enable
the fi eld calibra tio n oper ation.
LOCKOUT PROCEDURE
1. T
urn the thermometer off.
2. Simultan eously press and hold the
cal
and the °C/°F keys down and
momentarily
press the on/off key .
Conti
nue to hold the cal and °C/°F keys
until the measurement mode is
displayed .
RE-EN
AB LE P R OCEDURE
1. Turn the thermometer off.
2. Simultan
eously press and hold the
hold
and the cal keys down and
momentarily
press the on/off key .
Conti
nue to press the hold and cal keys
unti l the measurement mode is displayed.