The Sensor Technology SQ26-01 hydrophone is a reliable, low cost, rugged hydrophone which is integrated into instrumentation.
The SQ26-01 hydrophone is commonly used in towed arrays, AUVs, and autonomous recorders. This hydrophone is very popular with student AUV competition teams.
The usable response (+3/-12dB) is good to better than 50kHz. The official "Flat" frequency response (±1dB) is rated to 28kHz. See the frequency response plots and the beam pattern plots (click on any thumbnail for enlargements).
Although the SQ26-01 hydrophone is low cost, it is a professional hydrophone and is not recommended for novice users.
The SQ26-01 hydrophone has a 2000m depth rating and is, therefore, subject to export restrictions.
- Sensor Technology SQ26-01 hydrophone
close-up of the Sensor Technology SQ26-01 hydrophone
- Test Frequency: 100-3000kHz
Plot of Frequency Response for the SQ26-01 Hydrophone: 100-3000kHz.
- Test Frequency: 2-50kHz
Plot of Frequency Response for the SQ26-01 Hydrophone: 2-50kHz.
- Beam: 5kHz
Plot of Beam Pattern for the SQ26-01 Hydrophone: 5kHz.
- Beam: 10kHz
Plot of Beam Pattern for the SQ26-01 Hydrophone: 10kHz.
- Beam: 35kHz
Plot of Beam Pattern for the SQ26-01 Hydrophone: 35kHz.
|Linear Frequency Range (±1dB) [kHz]||.001† to 28|
|Usable Frequency Range (+3/-12dB) [kHz]||0.001† to > 50|
|Transducer Voltage Sensitivity @ 20°C [dB, re 1V/µPA]||-193.5|
|Transducer Voltage Sensitivity @ 20°C [V/bar]||20|
|Transducer Charge Sensitivity @ 20°C [nC/bar]||24|
|Acceleration Sensitivity [mbar/g]||< 0.2 when properly mounted|
|Maximum Operating Depth [m]||down to 2,000|
|Operating Temperature Range [ °C]||-30 to 60|
|Capacitance (± 10 %) @ 20 °C [nF]||1.4|
|Sensitivity Variation with Temperature||less than 1dB loss from 0 to 35 °C|
|Capacitance Variation with Temperature||0.33% increase per °C|
|Capacitance Variation with Depth||7% loss per 1,000 m|
|Dimensions [mm]||25.4 L x 25.4 dia.|
|Electrical Leads||two-wire shielded, 28AWG, 30cm (12") long|
|Shielding||integral Faraday cage type|
|Electrical Insulation [Ω]||> 500 M|
|Water Blocked Leads||No|
- Autonomous Recorders
- Autonomous Underwater Vehicles (AUV)
- Remotely Operated Vehicles (ROV)
- Towed Hydrophone Arrays