NFS2-3030 Programming Manual — P/N 52545:K1 03/20/2012 121
Intelligent Sensing Features Intelligent Sensing Applications
A graphic representation of a detector analog reading using drift compensation and smoothing:
Figure D.1 Graphic Representation of Drift Compensation
D.2.2 Maintenance Warnings – Three Levels
The software determines when the drift compensation for a detector reaches an unacceptable level
that can compromise detector performance. When a detector reaches an unacceptable level, the
control panel indicates a maintenance warning. The table below summarizes the three levels of
Intelligent Sensing maintenance warnings:
Table D.1 Definitions of Intelligent Sensing Maintenance Levels
A graphic representation of the maintenance levels:
Figure D.2 Diagram of Maintenance Levels
Awacs1a.cdr
Analog
Reading
Alarm Level
with compensation and
smoothing
without compensation
Time
Detector Trouble
Message
Indicates
Detector Compensation Percentage Range
Ion Photo or
Photo with Heat
Laser
N/A
Compensation is within acceptable range. 6 - 80 6 - 45 3 - 50
LOW THRESHOLD A hardware problem in the detector. 0 - 5 0 - 5 0 - 2
MAINTENANCE REQ
Dust accumulation that is near but below
the allowed limit.
The Maintenance
Required is an alert level that indicates the
need for maintenance before the
performance of the detector is
compromised.
92 - 99 92 - 99 83 - 99
MAINT.URGENT
Dust accumulation above
the allowed
limit. 100 100 100
MAINT.URGENT
MAINTENANCE REQ
LOW THRESHOLD
Acceptable
Range
DIRTY
Low
Value
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