Welcome to Tiandunbj Technology Co., Ltd.
National service hotline:mike.lin@tiandunhk.com
HTD-81 (59KHz) array hydrophone
The HTD-81 Array Hydrophone is a member of the HTD-80 series hydrophones, specifically designed for integration into arrays.
Product details
Product introduction
The HTD-81 Array Hydrophone is a member of the HTD-80 series hydrophones, specifically designed for integration into arrays. It balances low cost, small size, and rugged durability, with a maximum operating depth of 3500m. The HTD-81 Array Hydrophone is widely used in scientific research, marine oil and gas exploration, seismic monitoring, and underwater towed arrays.
Main application scenarios
(1) Various scientific research applications
(2) Underwater towed arrays
Technical specification
(1) Voltage Sensitivity: -203 ± 2 dBV re 1 μPa @ 20 °C, 6.3 V/bar;
(2) Frequency Response: 10Hz to 59kHz;
(3) Charge Sensitivity: 28 nC/bar;
(4) Capacitance: 4.0 nF ± 20 % @ 20 °C
(5) Capacitance Change vs. Temperature: Increases 0.4% per 1°C rise;
Capacitance Change vs. Pressure: Decreases 8% per 1000m depth increase;
(6) Maximum Operating Depth: 3500m;
(7) Recommended Maximum Drive Voltage: 25V;
(8) Acceleration Sensitivity: < 0.2 mbar/g;
(9) Dimensions: Diameter 14mm * Length 48.4mm;
(10) Weight: 15g;
(11) Cable: Standard 2-wire, 28AWG, Length 15cm, Hytrel insulated conductors;
(12) Electrical Insulation Between Conductors: >500 M Ohm;
Sensitivity Curve
![]() |
Installation Options Available
![]() |