E2S BExS110E Alarm Sounder 230V AC

E2S Warning Signals BExS110E Explosion-Proof Alarm Sounder (230V AC)

The E2S BExS110E 230V AC is a multi-tone acoustic alarm sounder engineered for Zone 1, Zone 2, and severe offshore/marine operations. Operating on a 230V AC (50/60 Hz) single-phase feed with a compact nominal current draw of 56 mA, this unit generates sound pressure levels up to 117 dB(A) at 1 metre (nominal 110 dB(A) @ 1 m) with an effective audible range of 100 metres at 1 kHz.

The defining characteristic of the “E” variant (Ex de) versus the standard “D” (Ex d) model is its dual-chamber architecture. The electronics and acoustic transducer reside within a flameproof Ex d main chamber, while electrical cable entries terminate into an integral increased safety Ex e junction terminal chamber. This configuration permits field cable installation, loop-in/loop-out wiring, and routine inspection without disturbing or opening the precision-machined Ex d flame paths, dramatically lowering installation time, eliminating flame path maintenance risks, and ensuring long-term containment integrity in salt-laden, explosive marine atmospheres.

Model Details

• Base Series: BExS110 (Explosion-Proof Electronic Sounder, 110/117 dB)
• Enclosure Architecture: E (Increased Safety Ex e terminal box with Flameproof Ex d main body)
• Flare Style: Flare Horn (F)
• Operating Voltage: 230V AC 50/60 Hz

Technical Details

Applications

1. Offshore Oil & Gas Installations: Fixed drilling jackets, production platforms, and FPSO processing topsides requiring ATEX/IECEx Zone 1/2 gas explosion mitigation.
2. Commercial Marine & Tankers: Machinery spaces, steering gear compartments, and open cargo decks on LNG/LPG carriers, crude tankers, and chemical container vessels.
3. Refineries & Chemical Petrochemical Plants: Acoustic siren alerts for hydrogen, ethylene, propane, and methane processing facilities (Gas Groups IIA, IIB, and IIC).
4. Industrial Turbine & Compressor Enclosures: High-noise acoustic containment where 117 dB(A) output is required to overcome massive baseline decibel levels.
5. Bulk Handling & Marine Terminals: Jetty loading arms, bunkering manifolds, and hazardous cargo transfer platforms exposed to continuous sea spray and weather extremes.

Interoperable Fire & Safety Alarm Systems

• Marine Fire Alarm Control Panels: Autronica (AutroSafe / Autroprime), Consilium (Salwico Cargo/CS4000), Tyco/Johnson Controls (T2000 Marine), Siemens Desigo CC.
• Process ESD / Safety Systems: Honeywell Experion PKS Safety Manager, Emerson DeltaV SIS, Yokogawa ProSafe-RS, Schneider Electric Triconex.
• Integrated PA/GA Skids: Gai-Tronics, Eaton MEDC systems, Neumann Elektronik marine public address and general alarm systems.

Part Number Cross-References & Alternates

• Pfannenberg: BExS110-230 / PYRA BExS110
• Eaton Crouse-Hinds / MEDC: DB3B (230V AC version) / DB1P
• Clifford & Snell: Yodalex YL60 / YA60 Flameproof Sounder (230V AC)
• Spectrex / Emerson: SharpEye acoustic beacons / industrial Ex d sounders

Frequently Asked Question

What is the primary difference between the E2S BExS110D and BExS110E models?

The BExS110D features an Ex d flameproof enclosure where power connections are terminated directly inside the flameproof chamber. The BExS110E features an “Ex de” design—it includes an integral increased safety (Ex e) terminal box. This allows engineers to terminate field cables inside the Ex e box without opening the Ex d flameproof chamber, streamlining installation and eliminating the risk of damaging the certified flame paths.

How do I configure tone selection on the BExS110E 230V AC sounder?

Primary tones (Stage 1) are set using an internal 5-position DIP switch located on the internal control circuit board. The unit comes pre-loaded with 32 standard international marine and petrochemical tones (including PFEER/UKOOA emergency tones). Secondary (Stage 2) and tertiary (Stage 3) tones are activated remotely by linking the designated stage terminals (S2, S3) to the common control terminal (C).

Can this alarm sounder be used on continuous duty cycles?

Yes. The internal electromagnetic acoustic driver and heavy-duty step-down transformers are rated for 100% continuous duty cycle operation at nominal 230V AC, backed by an operational MTBF of over 186 years.

Is line monitoring available for the 230V AC variant?

Direct DC reverse polarity diode line monitoring is standard on DC versions; for 230V AC variants, monitoring is typically performed via an end-of-line (EOL) monitoring resistor or relay loop fitted into the Ex e terminal chamber, compatible with marine fire alarm control panels.

What size cable should be used for 230V AC installations?

The heavy-duty spring-loaded screw terminals accommodate conductor cross-sections between 0.5 mm² and 4.0 mm² (20–11 AWG). Because current draw is only 56 mA per unit, standard 1.5 mm² or 2.5 mm² marine armored instrumentation/power cables provide minimal voltage drop over long offshore cable runs.