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Model 76 Series

Model 76 Series
  • DUAL FREQUENCY
  • 30 LF / HF COMBINATIONS
  • FISHING, NAVIGATION & SURVEYING
  • HULL MOUNTING
  • LOW SIDE-LOBES
  • ROBUST NYLON HOUSING

The 76 SERIES over-side mounted dual frequency transducers, combining both high and low frequency sections in a single unit. 

The ability to specify any combination of frequencies in the same basic unit provides the echo sounder manufacturer and hydrographer with a versatile sounding system combining high resolution with good range performance. 

The high impact strength nylon body provides a mechanically robust and corrosion free transducer. 

The 76 SERIES is available with or without acoustic calibration which is traceable to National Standards. Transducer impedance can be adjusted to suit customers specification.

Technical Specification

Resonant Frequency (Nominal)
  • 33/210 kHz (Other frequency options available, download datasheet)
Beam Pattern
  • 16.5 Degrees Conical @ 33 kHz
  • 7.5 Degrees Conical @ 210 kHz
Bandwidth
  • 3.5 @ 33 kHz
  • 15 kHz @ 210 kHz
Transmit Sensitivity
  • 167 dB re 1μPa/V 1m @ 33 kHz
  • 170 dB re 1μPa/V 1m @ 210 kHz
Receive Sensitivity
  • -175 dB re 1V/μPa @ 33 kHz
  • -193 dB re 1V/μPa @ 210 kHz
Nominal Impedance
  • 100 Ohms @ 33 kHz
  • 100 Ohms @ 210 kHz
Transmit Voltage / Duty Cycle (Max)
  • 325 Vrms at 10% @ 33 kHz
  • 175 Vrms at 10% @ 210 kHz

Mechanical Specification

Connector
  • Not fitted as standard
  • (Optional Customer Specific)
Operating Temperature
  • -5 to +40 °C
Storage Temperature
  • -40 to +80 °C
Cable Type
  • Ø12mm Polyurethane Jacket, Screened 4 Core
Operating Depth
  • 300m Standard
Cable Length
  • 10 metres standard
  • (Additional lengths supplied to order)
Weight Air/Water (including 10m cable)
  • 12.5 kg / 4.2 kg

Our Company

Formed in 1990, Neptune Sonar is now a leading company in underwater transducer technology, offering one of the world's largest and most comprehensive range of undersea defence and commercial transducers.

Based in the UK, our research and manufacturing operation is located on a 25-acre site in East Yorkshire. With a 60,000 square metre trials lake and a floating calibration laboratory, the site provides an extensive range of facilities supporting every aspect of acoustic transducer development from modelling and design to final product acceptance.

Neptune Sonar Limited
Kelk Lake
Kelk
East Yorkshire
YO25 8HG

T: 01262 490234
E: sales@neptune-sonar.co.uk
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We design, manufacture and test acoustic sensors and electronics for...

  • Naval Defense
  • Maritime Security
  • Offshore Oil & Gas
  • Hydrographic Survey Industry
  • Oceanographic Science
  • Environmental Sectors
  • Aquaculture