Heath Consultants Personal Surveyor (PS200 Series) - Manual (Page 63)

4-13
ALARMS
Fig. 4-12 Flow Fault
4.5.6 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. 4-13 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
flash every 30 seconds.