Cirrus HYBRID Aspirating Fire & Smoke Detectors


    • The first and only ‘Combined Fire & Smoke’ Aspirating Detector

    • Unique ‘Cloud Chamber Detection’ (CCD) - primary detection technology

    • Optical ‘Scatter Chamber Detectors’ (SCD) - secondary detection technology

    • Independent and integrated intelligent alarm signal decision making

    • The largest sensitivity range aspirating detector Zero% obs/m to 20% obs/m

    • HYBRID ‘Smart Signal‘ to verify alarms and discriminate false alarms

    • 7” full colour multi-function touch screen LCD display

    • Live camera stream from up to 6 IP colour cameras

    • On-board animated fault diagnosis feature



Combined Cloud Chamber ‘Fire’ and optical ‘Smoke’ detection 

History tells us that in reality there are really only two types of aspirating detector technology. These technologies are ‘Cloud Chamber’ aspirating detection identifying optically invisible fire particulate, and laser or LED ‘Optical’ aspirating detection identifying small amounts of visible smoke.

Cirrus HYBRID is the only aspirating detector available to identify the optically invisible fire particulate by utilising the unique ‘Cloud Chamber Detection’ (CCD) technology.

Depending on the materials burning, particularly in the many modern applications for aspirating detection systems, some fires burn with only a small amount of visible smoke, whereas others burn with greater volumes of visible smoke.

Cirrus HYBRID detects these wide-ranging ‘smokier’ fire types too. Early Warning Smoke Detection (EWSD) is provided using high performance optical ‘Scatter Chamber Detectors’ (SCD) that identify both small and larger smoke particles entering the detector.

By utilising the two most effective methods of aspirating system technologies (CCD and EWSD) in a single detector the Cirrus HYBRID detector provides a device able to detect fire and smoke over the largest range of fire types.

However, what makes this totally new and genuinely unique concept in aspirating fire and smoke detection technology so different is that these two technologies work both independently from each other, and through the use of complex algorithms also interact together, to provide true intelligent alarm decision making. The result of this synergy of technologies is a device that can verify true alarm conditions across the largest range of fire types. A further and equally as important result of this synergy of technologies, is the discrimination of unwanted or false alarms which have historically and still continue to plague so many optical only aspirating detectors.


Supply Voltage

20 - 29VDC

Power Consumption

16.8 watts quiescent
(24VDC 100% Fan Speed)

Current Consumption

500mA with blower @ 30%
700mA with blower @ 100%

Operating Conditions
Detector Ambient

0˚C to 38˚C (32˚F to 100˚F)

Operating Conditions
Tested to

0˚C to 55˚C (32˚F to 131˚F)

Operating Conditions
Sampled Air

-20˚C to 60˚C (-4˚F to 140˚F)

Operating Conditions

10 - 95%RH, non-condensing

IP Rating


Cable Access

10 x 20mm knock outs

Cable Termination

Screw terminal blocks
(0.2 - 2.5mm2, 30 - 12AWG)

Sampling Network

Four inlet ports with combined sampling pipe length up to 630m (2,066ft) subject to ’ProFlow’ sampling pipe calculation program. Maximum transport time = 120 seconds.

Pipe ID

19mm to 25mm (preferred OD 25mm)

Alarm Indications

Pre-alarm, Fire 1, Fire 2, Fire 3

Other Indications

Supply Healthy, General Fault

Sensitivity Range

10,000 PCC to 10 million PCC
0 - 1000CFS (Combined Fire & Smoke scale)

Programmable Inputs

3 monitored inputs that may be configured for Isolate, Reset, Silence, Day/Night, Battery Fault and Mains Fault

Programmable Output Relays

5 Relays rated 1A @ 30VDC
(Volt-free change over contacts)

Camera Inputs

6 x Protec specified IP cameras

Event Log / Data Retention

24,000 events stored on FIFO basis
(alarms, actions, faults and data points)
(Approx 30 day historical graph data)

Variable Sensitivity Settings

7 day programmable settings with 2 time zones per day. Day-time/Night-time setting

EN54 Approved Sensitivity Settings

Class A - 36 holes @ 200CFS
Class B - 44 holes @ 400CFS
Class C - 44 holes @ 600CFS

Airflow Monitoring

‘High Airflow’ and ‘Low Airflow’ fault monitoring


3.5kg (7.7lbs)

Dimensions (mm)

380(H) x 250(W) x 137(D)

Product Approval

CoCP No: 0359-CPR-00475
DoP No: PFD-CPR-0108
Relevant Standard: EN54 Part 17 & 20
AS7240 Part 20











































Connections Diagram


Application Guide

Class A - High Sensitivity Applications include:- Computer rooms, Cleanrooms, Data Centres, Control Rooms, Valve Halls, Archive Storage, Anechoic Chambers & EDP areas.

Class B - Enhanced Sensitivity Applications include:- Historic Buildings, Museums, Hospitals, Airports, Cathedrals, Theatres, Art Galleries, Clean Warehouses, Atria & Indoor Stadiums.

Class C - Normal Sensitivity and Harsh Environment Applications include:- Cold Storage Facilities, Specialist Production Facilities, Food Processing Areas, Paper Production Facilities, Transportation Terminals, Inaccessible Voids & General Warehousing.