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The Cetacean Research Technology CR3

The Cetacean Research™ CR3 Hydrophone is an omnidirectional hydrophone with no integrated preamplifier.
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Linear Frequency Range (±3dB) [kHz]: 0.0004 to 77
Useable Frequency Range (+3/-20dB) [kHz]: 0.0001 to 240
(see † note)
Sensitivity [dB, re 1V/µPa]: -210
Preamplifier Gain [dB]: the preamplifier is not included in the hydrophone body
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa]: 57
Power Requirement [Vdc]: no powering required
RMS Overload Acoustic Pressure [dB, re 1µPa]: N/A
Maximum Operating Depth [m]: 250
Operating Temperature Range [ºC]: -40 to 90††
Capacitance [nF]: 4
Dimensions [mm]: 50 L x 18 dia
Standard Coaxial Cable Length: 15 meters (longer cables on order)
Cable terminated with male BNC or mono phone plug connector
Directionality: omnidirectional
Battery / Connector box: power not required
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note †

Requires a preamplifier with 100M input impedance, such as the Reson VP1000 or Reson VP2000 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.
  • extra length ruggedized cable
  • custom orders not listed above
  • hydrophone may be used with either the optional Reson VP1000 or Reson VP2000 preamplifiers.