The D/300 miniature high frequency hydrophone is a versatile acoustic sensor with a wide range of underwater sound applications ranging from near field monitor systems to high frequency calibration.

Available with or without a certified acoustic calibration the single piezo - ceramic element retains an excellent spherical beam pattern up to 450 kHz.

The robust construction of the D/300 enables it to operate at depths down to 700 metres.

The sensor element is encapsulated in a tough polyurethane envelope moulded directly onto the cable.
This construction achieves accurate alignment of the acoustic centre whilst providing good vibration isolation between the element and the mounting stalk.

Electrical connection is by a double screened, low noise coaxial cable with a polyurethane outer sheath.

The D/300 is available as a calibrated or un-calibrated device with all calibrations traceable to National Standards.