Online Self-Contained Dual-Mode Hydrophone HTD-32ND-02-Self-contained hydrophone system-Tiandunbj Technology Co., Ltd.

Online Self-Contained Dual-Mode Hydrophone HTD-32ND-02

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Product details

Product introduction

The HTD-32ND-02 is an underwater single-channel acoustic monitoring system, featuring high-performance data acquisition, self-recording/storage capability, and online real-time data acquisition and transmission functions. It is primarily used for underwater acoustic signal recording. The HTD-32ND-02 incorporates features such as high configuration, sampling rate, high gain control, intelligent switching, and real-time data processing. It can be described as an intelligent single-channel passive acoustic monitoring system.

(1) Supports both local storage and online transmission working modes.

(2) High-performance hydrophone.

(3) Supports up to 512 GB storage; data can be downloaded online without needing to open the housing.

(4) Provides internal & external battery options.

(5) Source file format: Binary data format, supports conversion to .CSV.

(6) Comes with supporting software, supporting time-domain and frequency-domain display.

Main application scenarios

(1) Marine Environmental Monitoring: Used for monitoring noise pollution and bioacoustic activities in the marine environment, providing crucial data support to help protect and manage marine ecosystems.

(2) Underwater Engineering Inspection: Widely used for acoustic inspection of underwater pipelines, bridges, and other engineering structures, ensuring the safety and stability of the structures and preventing potential issues.

(3) Marine Biological Research: Facilitates in-depth understanding of marine ecosystems and supports marine biology research by collecting and analyzing acoustic activity data of marine organisms.

(4) Military and Defense: Used for testing and verification of underwater sonar systems, supporting applications in the defense and security sectors, enhancing underwater operational and monitoring capabilities.

Technical specification

1.Acoustic Acquisition

(1) Operating Frequency: 10Hz - 50kHz

(2) Sensitivity: ≥ -172 dB (re 1V/µPa)

(3) Frequency Response Range: 10Hz - 20kHz (±3.0 dB)

(4) Horizontal Directivity (@10kHz): Omnidirectional, ±2 dB

(5) Vertical Directivity (@10kHz): Omnidirectional, ±3 dB

(6) ADC: 24-bit Sigma Delta

(7) Dynamic Range: ≥ 120 dB (at 1kHz sampling rate)

(8) Supported Sampling Rates (Hz): 12.5k, 25k, 50k, 100k

(9) Adjustable Preamplifier Gain: 0 dB, 10 dB, 20 dB, 30 dB

2. Power Supply

2.1 Self-Contained Recording Mode

(1) Internal Power: Rechargeable battery (standard), dry battery optional.

(2) External Power: 9 - 18 Vdc; 12V recommended for highest efficiency.

(3) Continuous Operation Time: ≥ 48 hours (standard); ≥ 7 days requires customization.

2.2 Online Transmission Mode

（1）External Cable Power Supply: 220 VAC, 50 Hz.

（2）Independent Battery Box Provided: 29.4 V.

（3）Supports stable, continuous operation.

3. Storage

512 GB internal removable SD card storage. Configurable for recording schedules, timetables, and duty cycles. Supports online data download without needing to open the housing.

4. Dimensions

(1) Standard Configuration: ≤ Diameter 12 cm * Length 49 cm.

(2) Various housing sizes can be provided according to customer requirements.

5. Communication

Real-time Ethernet communication, supporting TCP/IP protocol, used for spectrograms, acoustic files, configuration files, data, etc.

6、 Environment

(1) Maximum Operating Depth: 1000 meters (standard).

(2) Configurations available for 1000 meters, 2000 meters, and 4000 meters.

(3) Operating Temperature: -10°C to +60°C; Storage Temperature: -20°C to +60°C.

7. Internal Clock

(1) Standard Timing Method: Oven-Controlled Crystal Oscillator (OCXO), 1.4 ms @ 72h.

(2) Optional: Rubidium Clock, 3 µs @ 24h.

8. Watertight Cable (For Online Transmission Mode Application)

(1) Watertight Cable Length: 100 m.

(2) Watertight Cable Water Pressure Resistance: 6 MPa.

(3) Watertight Cable Load Capacity: 100 kg.

(4) Watertight Cable Outer Sheath: Wear-resistant polyurethane.

Hydrophone Sensitivity Curve

WPS图片(1).jpg

System Composition

自容式水听器组合.jpg

From left to right: Cable, Power Box, Powerline Adapter (or Modem), Self-Contained Hydrophone.