AirSense Stratos Micra 25 High Sensitivity Smoke Detector (9-30671)

The AirSense Stratos Micra 25 (9-30671) is a compact aspirating smoke detector (ASD) that provides very high sensitivity smoke detection in a small package for easy, discreet installation. Laser-based forward light scatter gives reliable early warning, drawing air through a single sampling pipe of up to 50m (25m in moving air).

The detector fits into a Docking Station: sampling pipes and cables are connected to the Docking Station as a first-fix operation, leaving the detector to be fitted at final commissioning so it is less likely to be damaged during installation. Volt-free fire and fault relay outputs allow remote monitoring by a local fire detection panel or BMS. It is suited to computer rooms, data storage, equipment racks, plant and motor rooms, air-conditioning units and duct protection, heritage properties, prison cells and other critical areas.

Key features

• Laser-based forward light scatter for very high sensitivity
• ClassiFire® Perceptive Artificial Intelligence automatically adjusts the operating parameters to the protected environment and to contamination of the dust separation system, so the detector runs at high sensitivity in a computer room or reduced sensitivity in a smoky area without complex set-up
• Patented Dual Technology LDD 3D3 Laser Dust Discrimination avoids unwanted alarms from dust
• Docking Station design for first-fix pipework and wiring
• RS485 SenseNET communications built in; up to 127 detectors per loop
• Options: Addressable Protocol Interface Cards (APIC™), Command Module, remote display units and MatrixScan virtual addressable location software
• CPR, LPCB, VdS, NF and CSIRO approved

Technical specifications

• Detection principle: laser light scattering mass detection and particle evaluation
• Sensitivity range: 0.0015% to 25% obs/m
• Particle sensitivity range: 0.003 to 10 microns
• Alarm levels: 4 (Aux, Pre-alarm, Alarm and Alarm 2)
• Sampling pipe: a single sampling pipe of up to 50m (25m in moving air); 27mm OD
• Pipe inlets: 1; exhaust: 1 (optional)
• Sampling holes: up to 10
• Outputs: 2 (Alarm N/O and Fault N/C), rated 500mA at 30V; optional input and relay card
• Operating voltage: 21.6 to 26.4V DC
• Current consumption: 250mA
• Status indication: LED
• SenseNET (RS-485): on-board
• Enclosure: sheet steel, cream
• Cable entries: 2 x M20
• Dimensions: 145 x 220 x 85mm (W x H x D)
• Weight: 1.7kg
• Operating temperature: -10°C to +60°C (EN54-20)
• Relative humidity: 0 to 90% non-condensing
• IP rating: IP40 (indoor)
• Certification: EN54-20