37.5kHz – 90 Day Marine Beacon
Building on over 50 years of underwater acoustic beacon manufacturing experience, Dukane Seacom has developed DKM502/90 which is the newest version of the IMO standard in underwater acoustic locating beacons for maritime use. Expanding on the proven reliability of the DKM502, the DKM502/90 will assist in location of VDR & S-VDR capsules up to 6096 meters or 20,000 ft. water depth. The DKM502/90 will provide a minimum of 90 days of uninterrupted operation once activated, complying with minimum standard specification SAE8045A, IEC61996-1 & IEC-61996-2.& BSH approved
Physical Characteristics
- Watertight aluminum case (1.3”dia, 3.99” length (less mount)).
- Capable of operation at depths of up to 20,000 feet (6096 m)
- Detectable at a range of 2000 to 4000yards (1800 to 3600 meters) based on environmental factors.
- Sustained pressure up to 8700 psi.
- Dual water switch actuation initiates beacon operation upon immersion in either fresh or salt water.
- The battery used to power the DKM502/90 will sustain beacon operation for a minimum of 90 days at an acoustic output of 160 dB. Operating frequency is 37.5 kHz.
Standard Features
- Military grade corrosion protection.
- Chemical coating systems MIL-A-8625
- Innovative engineering technology that protects against inadvertent actuations.
- ATS-270M Portable Test Set shall be used to perform operational tests on the beacon.
- It can be detected at a range of 2000 to 4000 yards with DSL-375 locator.
Beacon Specifications
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Details
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Specs
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Operating Frequency:
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37.5 kHz ± 1 kHz
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Operating Depth:
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Surface to 20,000 feet (6096 meters)
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Pulse Length:
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9.0 milliseconds Minimum
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Pulse Repetition Rate:
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Not less than 0.9 Pulse/Sec
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Operating Life:
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90 Days (Minimum)
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Battery Life In Beacon:
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3 Years
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Acoustic Output, Initial:
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1060 dynes/cm2 Rms pressure at 1 meter (160.5dB)
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Acoustic Output After 90 Days:
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700 dynes/cm2 Rms pressure at 1 meter (157.0dB)
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Operating Temperature Range:
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+28°F (-2.2°C) to +100°F (+37.8°C)
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Actuation:
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Fresh or salt water
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Radiation Pattern:
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Rated output over 80 percent of sphere
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Size:
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1.30 inches (3.30 cm) diameter x 3.99 inches (10.13 cm) long (less mount)
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Weight, Beacon:
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6.7 ounces (190 grams)
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Weight, N30A26 Mount:
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6 ounces (170 grams)
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Storage Temperature Range:
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-67°F (-55°C) to 185°F (85°C)
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Battery:
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Replaceable
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