x Hydrophones

Hydrophones are used for picking up weak sound vibrations under water and the signal must be amplified by a high impedance hydrophone amplifier in order to convert the extreme high output impedance in the hydrophones piezoelectric ceramic into a low impedance signal which can be handled by commonly available signal processing equipment. Hydrophones and amplifiers are used for studying underwater acoustics and monitoring of sonar and communication sound signals from dolphins, porpoises and whales and detection of acoustic pingers and detection of cetacean clicks. Etec amplifers for Hydrophones. Our Amplifiers are especially designed to be used together with the Reson line of piezoelectric hydrophones which are "state of the art" in performance or ES etec 80, 60 or 40 hydrophones. The impedance conversion rate is normally 1 to 10e9 ie. from an input impedance of 10 Giga ohm down to 10 ohm on the amplifiers output terminal. The etec line of amplifers offers an input impedance of 1 to 10 Gigaohm and 10picofarad which is sufficient to handle the frequency range from 0.1Hz to 1MHz with small transducer ceramics. We are capable of handling low level signals down to 1uVolt rms at 1KHz. which equals just about 60...80dB signal level under water.

TC4033 Reson hydrophone Equipped with 7 pole Hirose connector Robust Spherical Reference Hydrophone Frequency (kHz) 1Hz to 160kHz Recieving Response (dB) - 203dB ±3dB at 250Hz Operating Depth 900m Adaptor for Hirose 7 pole to BNC connector used for standard type Reson TC4033 or eq. with BNC connectors. TC4033 Reson hydrophone data sheet Click to view pdf file. Opens in a popupwindow TC 4033 Reson hydrophone. Price€ 1.400/pc. Quantity: Check Out ES etec hydrophone. ES 80 / ES 60 / ES 40 ES 80 etec Hydrophone active€ 1.200/pc. 3pcs/€1.080 ES 60 etec Hydrophone active 2 wire.€ 1.000/pc. 3pcs/€900 ES 40 etec Hydrophone passive. € 800/pc. 3pcs/€720 ES 80 etec Hydrophone active. Price€ 1.200/pc. Quantity: Check Out ES 60 etec Hydrophone active 2 wire. Price€ 1000/pc. Quantity: Check Out ES 40 etec Hydrophone passive. Price€ 800/pc. Quantity: Check Out Facta box A hydrophone (Greek "hydro" = "water" and "phone" = "sound") is a microphone designed to be used underwater for recording or listening to underwater sounds. Most hydrophones are based on a piezoelectric transducer that generates electricity when subjected to a pressure change. Such piezoelectric materials, or transducers can convert a sound signal into an electrical signal since sound in water is a pressure wave in fluids. Sonar Sonar is the name given to the acoustic equivalent of radar. Pulses of sound are used to probe the sea, and the echoes are then processed to extract information about the sea, its boundaries and submerged objects. An alternative use, known as passive sonar, attempts to do the same by listening to the sounds radiated by underwater objects.

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