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Cirrus Pro 100

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Cirrus Pro 100
  • Cloud Chamber Detection Principle
  • Up to 100 mtrs Sampling Pipe
  • Programmable ‘Pre-Alarm’ warning condition
  • 3 Programmable ‘Fire’ warning conditions
  • Silence and Reset Buttons
  • Vast Sensitivity Range
  • Latching / non latching alarm contacts
  • Airflow Monitoring
  • ‘Fault Diagnostic’ feature
  • Immune to dust, humidity & temperature changes
  • UL/FM Approved
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The new range of Cirrus Pro Series Aspirating Fire Detectors provide a solution for almost any aspirating system project, from a simple single pipe detector with minimum ‘Fire’ and ‘Fault’ LED indications to a multiple pipe scanning detector with multifunction quarter VGA backlit LCD display. Programming for each detector is via a laptop computer or from an onboard or remotely mounted LCD display.

The Cirrus Pro 100
  • ‘Cloud Chamber’ aspirating fire detector
  • For use with up to a total of 100mtrs of 25mm diameter sampling pipe.
  • Single sampling pipe ‘inlet’ port, single sampling pipe ‘exhaust’ port.
  • LED status indication of Common Fault, Power, Pre-alarm, Fire 1, Fire 2, Fire 3 alarm conditions
  • Internal buzzer ‘Silence’ button, detector alarm ‘Reset’ Button.
  • May be networked with other Cirrus Pro Series aspirating detectors

Supply Voltage

20 - 29VDC

Power Consumption

7.2 watts quiescent (24VDC 90% Fan Speed)

Current Consumption

350mA quiescent 50mA alarm (24VDC 90% Fan Speed)

Dimensions (mm)

285(W) x 215(H) x 144(D)


 4kg (8.8lbs)

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

 6 x 20mm knock outs

Cable Termination

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

Sampling Network

Single inlet port with combined sampling pipe length up to 100m typically (325ft.) Maximum Transport Time allowed up to 120 seconds.

Pipe ID

19 to 25mm (preferred OD 25mm)

Alarm Indications

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

Other Indications

Supply Healthy, General Fault.

Sensitivity Range

20,000 particles per cc to 3 million particles per cc 10 programmable sensitivity ranges.

Programmable Inputs

4 monitored inputs that may be configured for Isolate, Reset, Disable, Fault, Gain Set, Battery Fault and Mains Fault, Silence and Reset button, Disable.

Programmable Output Relays

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

Event Log

128 events stored on FIFO basis.

Data Retention

Approx 10 day historical graph

Variable Sensitivity Settings

7 day programmable settings with 3 time zones per day.

Airflow Monitoring Adjustable

‘High Airflow’ and ‘Low Airflow’ fault monitoring.



Connections Diagram

Cirrus Pro 100 Connection Diagram

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