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│ 9 Appendix
AL2: Main alarm
Adjustable:
Yes
Latching:
Yes
Trigger:
When alarm threshold
AL2
is exceeded
Indicator:
– audible signal
– visual signal
–
AL2
symbol
Acknowledge-
ment:
audible signal
– after the alarm has been triggered
Overall alarm
– after the level has fallen below the alarm threshold
AL2
Reset:
– after the level has fallen below the alarm threshold
AL2
– The alarm must also be acknowledged or have
already been acknowledged.
–
by switching off the device
AL3: End of measuring range
Adjustable:
No
Latching:
Yes
Trigger:
When the alarm threshold
AL3
is reached
Indicator:
– audible signal
– visual signal
–
AL3
symbol
–
Reading flashes
Acknowledge-
ment:
Overall alarm
– after the level has fallen below the alarm threshold
AL1
Exception:
On the
PM 400
the alarm cannot be acknowledged.
Reset:
– after the level has fallen below the alarm threshold
AL1
– The alarm must also be acknowledged or have
already been acknowledged.
–
by switching off the device
