2-10
USER HANDBOOK
A faulty LEL sensor zero reading is shown in Fig. 2-13:
Fig. 2-13 Acknowledge Alarm
A congurable option is available to force the user to switch the
instrument off if a zero fault is detected, as shown in Fig. 2-14:
Fig. 2-14 Switch OFF
Note: If a sensor fault is detected during normal operation of
the instrument, the backlight illuminates red, an audible / visual
alarm is activated immediately and a spanner symbol is shown
adjacent to the faulty sensor type in the display.
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