2.7.2 Self-diagnostic
With this function the current status of the sensor will be indicated by different flash modes of the LED.
Figure 5: Sensor status
If activated, the LED will show one out of five possible states of
the sensor:
Status LED mode
Normal intermittent off - - - -
Sensor overheated fast flash - - - - - - - - - - - - -
Out of measuring range double flash -- -- -- -- -- -- --
Not stable intermittent on ––– ––– ––– –––
Alarm fault always on –––––––––––––––
At a supply voltage (Vcc) ≥ 12 V it takes about 5 minutes until the sensor works in a
stable mode. Therefore, after switching on the unit, the LED will show a not stable
state for up to 5 minutes.
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