Cetacean Research Technology C57 and C57X
The C57 hydrophones include an integral connector and are encapsulated in a very rugged polyurethane material.
The hydrophones are not individually calibrated but calibrated frequency response measurements can be performed on request.
Linear Frequency Range (±3dB) [kHz]: 0.015 to 45
Usable Frequency Range (+3/-20dB) [kHz]: 0.008 to 100
Transducer Sensitivity* [dB, re 1V/µPa]: -187
Preamplifier Gain [dB]: 20 / 33 for X model
Effective Sensitivity* [dB, re 1V/µPa]: -167 / -154 for X model
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa]: 46 (Sea State Zero)
Power Requirement [Vdc]: 5 to 32
RMS Overload Acoustic Pressure [dB, re 1µPa]: 171 to 188 / 158 to 175
Maximum Operating Depth ** [m]: 370
Operating Temperature Range [ºC]: -40 to 60
Output Impedance : 2.5
Dimensions [mm]: 119 L x 25 dia.
Integral Connector ***: Subconn MCBH3MSS
Battery boxes are rated NEMA-4X water resistant. Standard signal connection for the Cetacean Research C57 hydrophone is through a watertight female BNC connector.
The hydrophones are powered by a single 9V battery (not included).
Signal Output: Female BNC connector
Battery Life [hours]: > 20
Box Dimensions [mm]: 98 long x 64 wide x 40 high
• omnidirectional below 10kHz;
• very directional at high frequencies (e.g., ~15º solid angle at 200 kHz, -3dB);
• directionality focused in a plane.
The C57 hydrophone is a direct replacement for the C54XRS and C55 series.
* Transducer Sensitivity + Preamplifier Gain = Effective Sensitivity.
** 1,000 meter versions are available. Append "-1k" to the model number to order a hydrophone with a depth rating >1,000 meters.
*** Connectors are rated to a depth of 7,000 meters.
• removable in-line high-pass filter
• external power supply support
Shielded Cable Length [m]: mating connector molded to 15, 30, or 50 [m] shielded cable as standard, different lengths available on order.
Cable includes Integral Connector rated to a depth of 7,000 meters.