Thermo Fisher Scientific Thermo Scientific Temp 10 JKT Series - Manual (Page 18)

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17. FIELD CALIBRATION LOCKOUT
AND RE-ENABLE
The calibration lockout feature prevents
any field calibration changes. The lockout
remains in effect until a lockout re-
enable has been performed. Use the
following procedures to lockout or re-
enable the field calibration operation.
LOCKOUT PROCEDURE
1. Turn the thermometer off.
2. Simultaneously press and hold the
cal
and the °C/°F keys down and
momentarily press the on/off key.
Continue to hold the cal and °C/°F keys
until the measurement mode is
displayed.
RE-ENABLE PROCEDURE
1. Turn the thermometer off.
2. Simultaneously press and hold the
hold
and the cal keys down and
momentarily press the on/off key.
Continue to press the hold and cal keys
until the measurement mode is displayed.