Description
AUTRONICA
BH-31A/EX
OPTICAL SMOKE DETECTOR HEAD
BHA-33
PI=0.65W, UI=17.5V, CI=3.0NF, LI=0
NO.: EX94C183
E2163/2
The Autronica BH-31A/EX is an optical smoke detector head designed for use within marine fire alarm systems in hazardous or explosion-protected environments. As an EX-rated detection component, it employs light-scattering optical technology to identify the presence of smoke particles, triggering early warning responses critical to crew safety and vessel protection. This detector head is a key element of shipboard fire detection infrastructure, particularly where flammable atmospheres or sensitive spaces demand intrinsically safe equipment. Its role within the fire alarm system makes it directly relevant to SOLAS fire safety compliance aboard commercial and offshore vessels.
Key Features
✓ Optical smoke detection technology using light-scattering principles for reliable early-stage fire identification in marine environments.
✓ Rated electrical parameters as specified: PI=0.65W, UI=17.5V, CI=3.0NF, LI=0 — confirming intrinsically safe circuit compatibility for hazardous area installations.
✓ EX-certified design (reference EX94C183) suitable for use in Zone-classified spaces where explosion protection is required onboard.
✓ Compatible with the BHA-33 base and intended for integration with Autronica fire detection panels and loop systems; broader panel compatibility subject to system configuration confirmation.
✓ Designed for direct replacement or maintenance of existing Autronica detection installations, supporting scheduled service and system integrity checks onboard.
Marine Applications
✓ Engine rooms, pump rooms, and other hazardous spaces aboard tankers and gas carriers requiring EX-rated smoke detection.
✓ Offshore platforms and FPSOs where intrinsically safe fire detection equipment is mandated by classification and safety regulations.
✓ Cargo vessel accommodation and service areas fitted with Autronica fire alarm loops requiring detector head replacement or upgrade.
✓ Naval and coast guard vessels operating Autronica-based fire detection systems in enclosed or restricted spaces.
✓ Ferry and passenger vessel fire detection circuits where optical detection provides reliable response to slow-burning or smouldering fire conditions.
Why Marine Engineers Choose
The Autronica BH-31A/EX is a trusted component within established shipboard fire alarm architectures, valued for its EX certification, defined intrinsic safety parameters, and straightforward integration into existing Autronica detector bases and loop wiring.
Ideal For
Tankers, gas carriers, offshore platforms, FPSOs, cargo vessels, passenger ferries, and naval vessels operating Autronica fire alarm systems in hazardous or standard protected spaces.
Technical Support
Technical support is available for the Autronica BH-31A/EX and associated fire alarm system components. Assistance covers onboard installation guidance, detector loop integration, and remote troubleshooting to help maintain system reliability and safety compliance.
