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USER HANDBOOK
4.5.5 Calibration Required
If the instrument requires calibration then during warm-up,
a ‘CALIBRATION OVERDUE’ warning is displayed. The
instrument will operate using its previous calibration settings,
however, as the sensors response may have diminished, the
instrument should be recalibrated and tested.
Fig. 4-12 Calibration Overdue
Press the Right Hand (RH) button once to acknowledge
that calibration due date is overdue, cancel the audible / visual
alarm, and continue to the next display. A ‘CAL EXPIRED’
warning, red backlighting and red LED’s will ash every 30
seconds.
Press the Left Hand (LH) button once to abort the
warm-up routine and automatically switch OFF the instrument.
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