D.2.2: Maintenance Warnings - Three Levels - Honeywell nfs2-3030 Programming Manual

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