CRT CR1A Hydrophone

CR1A hydrophone is an excellent multi-purpose hydrophone. Used for detection & recording of loud signals, listening & recording of quieter sounds like cetaceans, whale watching operations. CR1A hydrophone is not pre-amplified. CR1A matches perfectly with any of our DAQ modules. All CR1A hydrophones are individually spot calibrated at the factory.

Linear Frequency Range (±3dB) [kHz] 0.0002 to 50
Useable Frequency Range (+3/-20dB) [kHz] 0.00002 to 110
(Requires a preamplifier with 100MOhm input impedance)
Sensitivity [dB, re 1V/µPa] -198
Preamplifier Gain [dB] N/A (no built-in preamplifier)
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa] 38 (less than sea state zero)
Power Requirement [Vdc] N/A since no built-in preamplifier
Maximum Operating Depth [m] 100
Operating Temperature Range [ºC] -25 to +60
(CR1 hydrophones are individually spot calibrated at the factory; calibration guaranteed between -5ºC and +30ºC.)
Capacitance [nF] 10
Dimensions [mm] 73 Length x 32 Diameter
Coaxial Cable Length 15 meters, cable terminated with male BNC or mono phone plug connector (longer cables availabe upon request)
Directionality Omnidirectional below 10kHz

CR1A Hydrophone

CR1A Hydrophone Frequency Response

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