Ultra-Miniature Compact Design
Extremely small size and lightweight (only 0.53 kg in air), perfectly meeting the strict payload requirements of Micro-ROVs.

The Imagenex Model 852 is an ultra-miniature, deep-water digital echo sounder, specifically designed for the smallest Micro-ROVs on the market today. Its core advantages lie in its extreme compactness, ultra-low power consumption, and excellent deep-water tolerance, making it an ideal sensing solution for underwater platforms with severely limited space and weight.
The 852 echo sounder is exceptionally easy to operate. It can be connected directly to a laptop, with dedicated Windows software used for device control and data visualization. It supports a wide input voltage range and consumes less than 1.5 Watts of power, allowing for quick deployment without complex system integration. It provides a cost-effective, highly reliable, and fundamental water depth detection capability for various underwater tasks.

Extremely small size and lightweight (only 0.53 kg in air), perfectly meeting the strict payload requirements of Micro-ROVs.
Housed in a 6AL4V titanium alloy shell, with a maximum operating depth of 6000 meters, it is capable of handling the vast majority of deep-water application scenarios.
With power consumption less than 1.5W and support for a 9-50 VDC wide voltage range, it greatly enhances compatibility with different power supply platforms.
Standard configuration at 675 kHz, with an optional 330 kHz, providing users a choice between different resolution and coverage requirements.
Utilizes standard RS-485/232 serial communication, paired with intuitive Windows software, for rapid deployment and real-time data acquisition.
Supports external signal triggering, facilitating synchronized operation with other equipment to meet complex mission timing requirements.

Provides real-time altitude information for micro and small ROVs, ensuring safe navigation and operation.
Assists divers in understanding underwater terrain, enhancing situational awareness in low-visibility environments.
Provides precise depth and distance references during routine underwater inspections.
Used for preliminary underwater target localization and depth confirmation.
Can be deployed on autonomous platforms such as small AUVs for basic bathymetric data collection.
Hardware Specifications
| Technical Specifications | Parameter / Description |
| Sonar Performance | |
| Operating Frequency | 675 kHz (Standard), 330 kHz (Optional) |
| Beamwidth | 675 kHz: 9° x 9° (Conical) 330 kHz: 20° (Conical) |
| Maximum Range |
50 m |
| Range Resolution |
20 mm |
| Minimum Detection Distance |
500 mm |
| Physical Characteristics | |
| Maximum Operating Depth |
6000 m |
| Weight | In air: 0.53 kg In water: Approx. 0.34 kg |
| Housing Material | 6AL4V Titanium, PVC, Epoxy |
| Interfaces & Power | |
| Communication Interface | RS-485 @ 115.2 kbps (Standard), RS-232 (Optional) |
| Maximum Cable Length | 1000 m (using standard twisted pair shielded cable) |
| Power Requirements | 9-50 VDC, Power consumption < 1.5 W |
| Connector |
Subconn MCBH4M-Ti |
| Optional Features | External Trigger |
Software & Display Specifications
| Specification | Parameter / Description |
| Operating Software |
Win852.exe |
| Supported Operating Systems |
Windows XP, Vista, 7, 8, 10 |
| Operating Modes | Echo Sounder Mode |
| Range Scale | 5 m, 10 m, 20 m, 30 m, 40 m, 50 m |
| External Inputs | Supports input of depth, heading, steering information, etc. |
| Data Logging Format | .852 Proprietary Format |