Imagenex 881A Series Digital Multi-Frequency Imaging Sonar
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Imagenex 881A Series Digital Multi-Frequency Imaging Sonar

Fully Adjustable Frequency · Provides Cost-Effective Imaging Solutions for Underwater Platforms

The Imagenex 881A series is an advanced digital multi-frequency imaging sonar, with its core advantage lying in its wide-band programmability. Users can operate at default frequencies such as 310 kHz, 675 kHz, or 1 MHz, or finely tune the frequency from 280 kHz to 1.1 MHz in 5 kHz steps, allowing seamless switching from wide-area reconnaissance to high-resolution imaging.

This sonar series integrates high performance, low power consumption, small size, and high cost-effectiveness. It supports digital telemetry and has an imaging range covering 1 meter to 200 meters. Available in three pressure ratings of 1000m, 3000m, and 6000m, it can be fully adapted to various underwater platforms, from large work-class ROVs to small observation-class ROVs, as well as AUVs/UUVs. It meets diverse underwater detection needs with its flexible configuration and outstanding cost-performance ratio.

Imagenex 881A Series Digital Multi-Frequency Imaging Sonar

Key Features & Advantages

Main Applications

  • Underwater Vehicle Operations

    Provides real-time acoustic vision for ROVs, AUVs, and UUVs for navigation, observation, and operational support.

  • Marine Engineering and Structure Inspection

    Used for condition inspection and survey of underwater pipelines, cables, pile foundations, and other structures.

  • Search and Recovery (SAR)

    Efficiently locate underwater lost objects such as shipwrecks, containers, and black boxes.

  • Scientific Research and Underwater Archaeology

    Used for seabed topographic mapping, shipwreck archaeology, and marine ecological environment research.

  • Salvage and Resource Recovery

    Aids in locating submerged timber or other valuable targets.

  • Diving Support

    Provides underwater situational awareness for divers in low visibility environments.

Specifications

 

Specification Parameters 881A (1000m Model) 881A (3000m Model) 881A (6000m Model)
Maximum Operating Depth

1000 m

3000 m

6000 m

Housing Material 6061-T6 Aluminum & Polyurethane Titanium, Polyurethane & 300 Series Stainless Steel Titanium & Polyurethane
Dimensions (Diameter × Length)

79.4 mm × 182 mm

79.4 mm × 182 mm

88.9 mm × 225 mm

Weight (in Air)

1.5 kg

2.0 kg

~3.1 kg

Weight (in Water)

0.6 kg

1.1 kg

~1.8 kg

Connector

Subconn MCBH4M-AS

Subconn MCBH4M-AS

Subconn MCBH4M-Ti

Surface Treatment Hard Anodized Hard Anodized None
Operating Frequency 310/675/1000 kHz (default), 280-1100 kHz (adjustable in 5 kHz steps)
Beam Width

310 kHz: 4° x 40°;675 kHz: 1.8° x 20°;1 MHz: 0.9° x 10°

Range Scale 1 meter to 200 meters (multiple adjustable ranges)
Range Resolution 1-4m: 2mm; 5m and above: 10mm
Minimum Detectable Range

150 mm

Communication Interface RS-485 @ 115.2 kbps (standard), RS-232 optional
Power Requirements 20-60VDC, power consumption <5 watts