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May 2019
Figure 4-1 Suggested Alarm Levels
Figure 4-1
shown have been found to provide sufficient immunity against most spurious alarms, however care
should be taken to survey the area of installation for potential spurious noise.
If background levels are unknown, typical historical process background levels can be used along with a
safety factor. Please contact an Emerson representative for historical values and guidance.
Alarm levels can be set in the detector or at the control panel. Most installations set the alarm levels in
the control system.
Factory Default standard alarm level is 70 dB.
24
shows the suggested alarm level settings for known background sound levels. The values
Reference Manual
00809-0100-3003, Rev AA
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