TDH-81(59kHz) Array Hydrophone

The TDH-81 Array Hydrophone is a member of the TDH-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 TDH-81 Array Hydrophone is widely used in scientific research, marine oil and gas exploration, seismic monitoring, and underwater towed arrays.contactus

Main Application Scenarios

(1) Various scientific research applications
(2) Underwater towed arrays

Technical Specifications

(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 * Length55mm;

(10) Weight: 25g;

(11) Cable: Standard 2-wire, 28AWG, Length 15cm, Hytrel insulated conductors;

(12) Electrical Insulation Between Conductors: >500 M Ohm;

Sensitivity Curve

Installation Options Available