Heath Consultants Personal Surveyor (PS200 Series) - Manual (Page 34)

2-10
USER HANDBOOK
2.2.10 Sensor Confirmation Check
The symbol appears adjacent to each sensor type to
confirm that the sensor has been zeroed correctly.
Fig. 2-12 Sensor Check Displays
If a sensor fails to zero correctly, the display will be red, the
audible / visual alarms activate and a symbol is displayed
adjacent to the faulty gas type, as illustrated in Fig. 2-13:
Fig. 2-13 Failed Sensor
To acknowledge this fault, press the Right Hand (RH) button
once. This will clear the audible / visual alarm and
display a flashing spanner symbol alternating with the faulty
sensor zero reading.