High precision self-contained hydrophone-Tiandunbj Technology Co., Ltd.

Self-Contained Hydrophone HTD-32ND-01

Underwater single channel acoustic monitoring system

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Product details

Product introduction

The HTD-32ND-01 is an underwater single-channel acoustic monitoring system with high-performance data acquisition and self-storage capabilities, primarily used for underwater acoustic signal recording. The HTD-32ND-01 features high configuration, sampling rate, high gain control, intelligent switching, and other functions. It can be said that the HTD-32ND-01 is an intelligent single-channel passive acoustic monitoring system.

(1) Local storage mode;

(2) High-performance hydrophone;

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

(4) Provides internal & external battery options;

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

(6) Supporting software, supports time-domain and frequency-domain display.

Main application scenarios

(1) Marine Environment Monitoring: Used for monitoring noise pollution and biological acoustic activities in the marine environment, providing essential data support to help protect and manage the marine ecological environment.

(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 structural issues.

(3) Marine Biological Research: By collecting and analyzing acoustic activity data of marine life, it promotes an in-depth understanding of the marine ecosystem and supports marine biology research.

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

Technical specification

1. Acoustic Acquisition

(1) Operating Frequency: 10Hz - 50kHz;

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

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

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

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

(6) ADC: 24-bit Sigma Delta;

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

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

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

2. Self-Contained Recording Mode

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

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

(3) Power Consumption in Self-Contained Mode: ≤1.5W;

(4) Continuous Operating Time: ≥48 hours (standard), ≥7 days requires customization.

3. Storage

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

4. Dimensions

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

(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, and data.

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, 3μs @24h.

Hydrophone Sensitivity Curve（10Hz-20kHz）