The CRT CR3

New Omnidirectional hydrophones coming early 2010!
The Cetacean Research™ CR3 Hydrophone is a new omnidirectional hydrophone under development.

PRELIMINARY SPECIFICATIONS

Linear Frequency Range (±3dB) [kHz]: 0.0006† to 125
Useable Frequency Range (+3/-20dB) [kHz]: 0.0001† to 250
Sensitivity [dB, re 1V/µPa]: -205
Preamplifier Gain [dB]: N/A
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa]: TBD
Power Requirement [Vdc]: N/A
RMS Overload Acoustic Pressure [dB, re 1µPa]: N/A
Maximum Operating Depth [m]: 250
Operating Temperature Range [ºC]: -40 to 60††
Capacitance [nF]: 2.8
Dimensions [mm]: 50 L x 18  dia
Coaxial Cable Length [m]: 15
Cable terminated with male BNC or mono phone plug connector (longer cable optional)
Directionality: omnidirectional
Battery / Connector box: power not required

† Requires a preamplifier with 100M input impedance, such as the Reson VP1000 (PDF) or Reson VP2000 (PDF) preamplifiers. If a preamplifier with 1M input impedance is used, then the low frequency -3dB point will be at 60Hz instead of 0.6Hz and the -20dB point will be at 6Hz instead of 0.1Hz.
††CR3 hydrophones are individually spot calibrated at the factory; calibration guaranteed between -5ºC and 30ºC.



Options
• extra length ruggedized cable
• custom orders not listed above
• hydrophone may be used with either the optional Reson VP1000 (PDF) or Reson VP2000 (PDF) preamplifiers.