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CR1 hydrophone product photos for maximum enlargement, click on thumbnail; --- for medium-sized enlargement, scroll down

The Cetacean Research™ CR1 hydrophone is ideal for the detection and recording of very loud signals, such as those from pile driving, air guns, or underwater demolition operations. The hydrophones are available with a standard PVC-jacketed or extra tough polyurethane-jacketed coaxial cable.  The cables can be terminated with either BNC or mono phone plug connectors.  All CR1 hydrophones are individually spot calibrated at the factory.

Linear Frequency Range [kHz]		0.0002† to 50 (±3dB)
Useable Frequency Range [kHz]		0.00002† to 110 (+3/-20dB)
Sensitivity [dB, re 1V/µPa]		-199
Power Requirement [Vdc]		N/A
Maximum Operating Depth [m]		100
Operating Temperature Range [ºC]		-25 to 60††
Preamplifier Gain [dB]		N/A
Overload Acoustic Pressure [dB, re 1µPa]		N/A
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa]		TBD
Capacitance [nF]		10.5
Dimensions [cm]		7.3L x 3.2 dia
Coaxial Cable Length [m]		15 Cable terminated with male BNC or mono phone plug connector (longer cable optional)
Directionality		omnidirectional below 10kHz
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 20Hz instead of 0.2Hz and the -20dB point will be at 2Hz instead of 0.02Hz. ††CR1 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.