Technical Specification

• Part Number: PCB 09005.1 (may have revision letters like “REV.D”)
• Sensor Type: Passive Infrared (PIR) Motion Sensor
• Function: Detection of human movement/presence.
• Application: Integral part of Bridge Navigational Watch Alarm Systems (BNWAS) and Dead Man Alarm Systems on marine vessels.
• Operating Voltage:
  • Nominal: 24 VDC (Standard for marine systems).
  • Range: Likely tolerant of fluctuations common on ship’s power, e.g., 18 VDC to 31.2 VDC or 19.2 VDC to 28.8 VDC (as seen for other SM-Electrics components).
• Current Consumption: Low, typical for a sensor module (specific value not found, but generally in the mA range).
• Detection Method: Detects changes in infrared radiation (heat signatures).
• Detection Range/Angle:
  • While not explicitly stated for this specific model, typical PIR sensors for such applications offer:
    • Range: Approximately 5-10 meters (16-33 feet).
    • Detection Angle: Wide angle, often 100-120 degrees horizontally, to cover a broad area like a bridge.
• Output Signal:
  • Likely a dry contact output (NO/NC – Normally Open/Normally Closed) or a digital signal compatible with the SM-Electrics main alarm units (e.g., the Connecting Module of the “le guardian 2025” BNWAS).
  • The BNWAS system typically expects dry contacts for its inputs.
• Response Time: Fast enough to reliably detect movement within a short period to reset the BNWAS dormant timer.
• Environmental Protection:
  • IP Rating: Depending on its intended mounting location (e.g., inside a console vs. more exposed), it would have an appropriate IP rating. For typical indoor bridge use, it might be IP20/IP22. If designed for more exposed areas (e.g., bridge wings), it would be IP65 or higher.
  • Operating Temperature: Suitable for marine environments, likely -15°C to +55°C (5°F to 131°F), or similar ranges as per IEC 60945.
  • Humidity: High humidity tolerance (e.g., up to 95% non-condensing).
• Certifications/Approvals:
  • MED Type Approved (“Wheel Mark”): Crucial for marine equipment, confirming compliance with the Marine Equipment Directive (often as part of the overall BNWAS system).
  • Compliance with relevant IEC standards:
    • IEC 62616 (BNWAS standard, which specifies motion sensor requirements).
    • IEC 60945 (General requirements for marine navigation and radiocommunication equipment and systems).
• Physical Characteristics:
  • Mounting: Typically designed for discrete mounting (e.g., ceiling or wall mounted).
  • Dimensions: Compact, designed to be unobtrusive.
  • Weight: Very light (e.g., 0.060 KG as seen in some listings).