Appendix C: AWACS™ Applications Detector Sensitivity Settings
90
NFS-640 Programming Manual P/N 51333:B 10/03/2003
Detector Sensitivity Settings
How to Select Pre-Alarm and Alarm Sensitivity
Each detector provides a host of selectable intelligent options. The control panel provides nine levels of
Pre-Alarm (PA:1–PA:9) and Alarm (AL:1–AL:9) in percent per foot obscuration:
• PA:0 no Pre-Alarm selection.
• PA:1 the self-optimizing setting where the control panel selects a suitable Pre-Alarm level for
a detector.
• PA:2–PA:9 the detector Pre-Alarm sensitivity level - with PA:2 the most sensitive and PA:9
the least sensitive.
• AL:1–AL:9 the detector Alarm sensitivity level - with AL:1 the most sensitive and AL:9 the
least sensitive.
Note: * Signifies the factory default setting.
Table 30 Detector Sensitivity (in percent obscuration per foot)
Detector Type Alarm (FlashScan) Alarm (CLIP) Pre-Alarm
Photo Electric
SMOKE (PHOTO)
(See note
1
)
1. Suitable for open area protection only with 0 to 300 feet per minute air velocity.
AL:1=0.50 %
AL:2=0.73 %
AL:3=0.96 %
AL:4=1.19 %
AL:5=1.43 %
AL:6=1.66 %
AL:7=1.89 %
AL:8=2.12 %*
AL:9=2.35 %
AL:1=0.50 %
AL:2=0.73 %
AL:3=0.96 %
AL:4=1.19 %
AL:5=1.43 %
AL:6=1.66 %
AL:7=1.89 %
AL:8=2.12 %*
AL:9=2.35 %
PA:1 =A ut o
PA:2 =0.30 %
PA:3 =0.47 %
PA:4 =0.64 %
PA:5 =0.81 %
PA:6 =0.99 %
PA:7 =1.16 %
PA:8 =1.33 %*
PA:9 =1.50 %
Ion
SMOKE (ION)
(See notes
1
and
2
)
2. Use only alarm sensitivity setting of AL=1, AL=2 or AL=3 for ION detectors installed in Canada
AL:1=0.50 %
AL:2=0.75 %
AL:3=1.00 %
AL:4=1.25 %
AL:5=1.50 %
AL:6=1.75 %*
AL:7=2.00 %
AL:8=2.25 %
AL:9=2.50 %
AL:1=0.50 %
AL:2=0.75 %
AL:3=1.00 %
AL:4=1.25 %
AL:5=1.50 %
AL:6=1.75 %*
AL:7=2.00 %
AL:8=2.25 %
AL:9=2.50 %
PA:1 =A ut o
PA:2 =0.40 %
PA:3 =0.50 %
PA:4 =0.75 %
PA:5 =1.00 %
PA:6 =1.25 %*
PA:7 =1.50 %
PA:8 =1.75 %
PA:9 =2.00 %
FlashScan View
(See Note
3
)
3. The use of alarm sensitivities below 0.50% obscuration per foot requires a 90 day test to ensure that the environment for
the detectors is suitable for the higher sensitivity setting. (Refer to “How to Test Detectors Set Below 0.50% Obscuration
per Foot” on page 91.)
AL:1=0.03 %
AL:2=0.05 %
AL:3=0.10 %
AL:4=0.20 %
AL:5=0.30 %
AL:6=0.50 %*
AL:7=0.70 %
AL:8=0.80 %
AL:9=1.00 %
AL:1=0.03 %
AL:2=0.05 %
AL:3=0.10 %
AL:4=0.20 %
AL:5=0.30 %
AL:6=0.50 %*
AL:7=0.70 %
AL:8=0.80 %
AL:9=1.00 %
PA:1 =A ut o
PA:2 =0.02 %
PA:3 =0.03 %
PA:4 =0.05 %
PA:5 =0.10 %
PA:6 =0.20 %*
PA:7 =0.30 %
PA:8 =0.40 %
PA:9 =0.50 %
Acclimate Plus™
AL:1=0.50 %
AL:2=1.00 %
AL:3=1.00 to 2.00 %
AL:4=2.00 %
AL:5=2.00 to 3.00%*
AL:6=3.00 %
AL:7=3.00 to 4.00 %
AL:8=4.00 %
AL:9=thermal 135
o
F
Alarm (CLIP)
AL:1=1.00 %
AL:2=1.00 %
AL:3=1.00 to 2.00 %
AL:4=2.00 %
AL:5=2.00 to 4.00%*
AL:6=2.00 to 4.00%
AL:7=2.00 to 4.00%
AL:8=4.00 %
AL:9=4.00%
PA:1 =0.50%
PA:2 =1.00 %
PA:3 =1.00 %
PA:4=1.00 to 2.00%
PA:5=1.00 to 2.00 %*
PA:6 =2.00 %
PA:7 =2.00 %
PA:8=2.00 to 3.00 %
PA:9=2.00 to 3.00 %
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