In Underwater acoustic systems

Hydrophone/Projector TD0720

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Hydrophone/Projector TD0720

The Colmar TD0720 is a general purpose spherical hydrophone / projector, suitable for a wide range of applications.

As a transmitter TD0720 offers a large bandwidth around the resonance frequency of 25 kHz, very low electrical input-impedance, high sensitivity and high power output. In reception, the high sensitivity and the very high capacitance allow the use of long connecting cables without the need of pre-amplifier. 

• Omnidirectional, general purpose hydrophone

• Wide frequency transmission band, high power underwater sound source

• Suited for transponders and pingers or acoustic data transmission

• High sensitivity, high capacitance, sound source suitable for tank and free field calibrations

• Sensitivity unaffected by hydrostatic pressure down to the reccomended depth

• Custom cable lenght and connector type

technical informations

• Outside diameter : 72.0 mm (over insulation)

• Molding material : Polyurethane

• Resonance frequency at constant voltage : 24.86 kHz (nominal)

• Transmitting frequency range at constant voltage : see Figure 3

• Transmitting frequency range at constant current : see Figure 4 (parallel tuning)

• Receiving sensitivity : -190 dB //volt/μPa (1Hz to 2 kHz)

• Horizontal beam pattern : Omni ± 1.5 dB up to Resonance Freq.

• Vertical beam pattern : Omni ± 3 dB up to Resonance Freq.

• Source Level at resonance frequency : 149 dB// μPa/volt at 1 m

• Crushing depth : 2000 meters

• Maximum operating depth : 700 meters

• Receiving sensitivity change at 700 m : – 0.2 dB

• Capacitance (at 1 kHz) : 42.4 nF (with 1m coax cable )

• Capacitance change at 700 m : ≈ – 6 nF

• Conductance at resonance : 8.5 mS

• Susceptance at resonance : 4.2 mS (with cable 1m long) 

Accessories and optional configurations

Cable lenght and connector termination by choice

Hydrophone/Projector TD0720 Download

Product sheet – Hydrophone/Projector TD0720