sewerin EX-TEC PM 4 - Page 70

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7 Technical data
z Warning application (Warning %LEL)
Alarm Gas concentration Signal
Setting range Factory
setting
Audible Visual
0 – 10 % LEL – –
AL1
10 – 50 % LEL 10 % LEL Pre-alarm 2 Hz Pre-alarm 2 Hz
AL2
10 – 60 % LEL 50 % LEL Main alarm
5 Hz
Main alarm
5 Hz
AL3 Invariable
100 % LEL Continuous
alarm
Continuous
alarm
When the LEL unit in the system settings is set to % vol., the
alarm thresholds are also set to % vol.
z Measuring application (Measuring VOL%)
Alarm Gas concentration Signal
Setting range Factory
setting
Audible Visual
AL5 1 – 100 % vol. 100 %
vol.
2 Hz ashing 2 Hz ashing