Gain 1 Gain 2 Very Low
Gain 3
Gain 4
Gain 5 Gain 6 Sensitivity
Gain 7
Gain 8
Gain 9
Gain 10 Very High
Pre-alarm – Local area investigation Fire 1 – Evacuate signal to house fire alarm system (possible visible smoke) Fire 2 – Not Used Fire 3 – Not Used
誠信、團隊、效能、卓越
The worlds most versatile fire detector
誠信、團隊、效能、卓越
The worlds most versatile fire detector
領導防災新潮流，開創安全新希望！
Understanding ‘Sensitivity (Gain) Settings’
Typical Cirrus Pro set-up for Warehouse
Fire 1 Pre
Old Cirrus IFD unit
New Cirrus Pro units
Fire 2 Fire 1 Fire 3 Pre
n 1 Very Low
Gain 2
Gain 3
Gain 4
Gain 5
Gain 6
Gain 7
Gain 8
Gain 9
Gain 10 Very High
Sensitivity
領導防災新潮流，開創安全新希望！
Understanding ‘Sensitivity (Gain) Settings’
New Cirrus Pro 4 x Adjustable Alarm levels Pre-alarm Fire 1 Fire 2 Fire 3 Gain 1 Low Gain 2 Gain 3 Sensitivity Gain 4 High Fixed Alarm Points
Fire 2 Fire 1 Fire 3 Pre
Gain 1 Gain 2 Very Low
Gain 3
Gain 4
Gain 5 Gain 6 Sensitivity
Gain 7
Gain 8
Gain 9
Gain 10 Very High
Pre-alarm – Local area investigation (alarm but possibly no visible smoke) Fire 1 – Air conditioning shutdown (possible small amount of visible smoke) Fire 2 – Evacuate signal to house fire alarm system (probable visible smoke) Fire 3 – ‘Single knock’ signal to Extinguishing Panel (possible flaming fire)
誠信、團隊、效能、卓越
The worlds most versatile fire detector
領導防災新潮流，開創安全新希望！
Understanding ‘Sensitivity (Gain) Settings’
Cirrus Pro Calibrated ‘Gain’ settings (Duisburg University) Based upon a particle size of 23nm
80%
7.0m PCC
80%
4.7m PCC
80%
2.7m PCC
80%
2.2m PCC
80%
1.3m PCC
20%
1.8m PCC Gain 1
20%
1.2m PCC Gain 2
20%
663k PCC Gain 3
20%
557k PCC Gain 4
20%
322k PCC Gain 5
very low sensitivity
medium sensitivity
誠信、團隊、效能、卓越
The worlds most versatile fire detector
領導防災新潮流，開創安全新希望！
Understanding ‘Sensitivity (Gain) Settings’
Cirrus Pro Calibrated ‘Gain’ settings (Duisburg University) Based upon a particle size of 23nm
medium sensitivity
誠信、團隊、效能、卓越
The worlds most versatile fire detector
領導防災新潮流，開創安全新希望！ 7.0m
4.7m 2.7m 2.2m 1.2m
1.8m
Particle number per C.C.
Gain 1
1.3m 580k 557k 663k
Gain 2 Gain 3
300k 200k 130k
390k 322k 145k
Gain 4
Gain 5
76k 50k 32k 98k
Gain 6 Gain 7
Gain 8 Gain 9
Gain 10 very high sensitivity medium sensitivity very low sensitivity
誠信、團隊、效能、卓越
The worlds most versatile fire detector
領導防災新潮流，開創安全新希望！
Understanding ‘Sensitivity (Gain) Settings’
Typical Cirrus Pro set-up for Computer Room
80%
580k PCC
80%
390k PCC
80%
300k PCC
80%
200k PCC
80%
130k PCC
20%
145k PCC Gain 6
20%
98k PCC Gain 7
20%
76k PCC Gain 8
20%
50k PCC Gain 9
20%
32k PCC
Gain 10 very high sensitivity