New Wave Media

February 6, 2018

Tritech Unveils New Multibeam Imaging Sonar

Gemini 720im (Photo: Tritech)

Gemini 720im (Photo: Tritech)

The new 720im sonar from U.K. manufacturer Tritech International Limited is said to be the world’s smallest multibeam imaging sonar.

As the latest addition to Tritech’s Gemini range, the small sized and competitively priced sonar brings multibeam imaging technology to situations not previously possible.
At 500g and 63mm wide, the 720im is significantly smaller than comparable sonars, yet it delivers superior quality sonar imaging from an ultra-compact unit thanks to state-of-the-art microelectronics and proven sonar technology.
“The Gemini 720im has been in development for two years. Every aspect of the sonar has been meticulously engineered and rigorously tested, to ensure that it meets the exacting high standards by which the Company operates,” said Scott McLay, sales director at Tritech. “Customers can expect this latest model to deliver the same outstanding performance and reliability that Tritech’s products are synonymous with, but in a supremely lightweight and compact unit.”
Tritech already has to its record one of the smallest mechanical sonars in the world – the MicronSonar, which utilizes Digital Sonar Technology (DST) and despite its miniature size, delivers sonar imagery of clarity and resolution normally associated with larger and more expensive models. The 720im extends that innovative technology into the multibeam arena. 
Having a 90° horizontal field of view and 50m range, with an update rate up to 20Hz, the Gemini 720im brings real-time imaging to places where multibeam was never possible before, the manufacturer said. Additionally, its compact size and weight removes payload issues encountered on ROVs.
David Bradley, managing director at Tritech, commented, “It’s hugely satisfying to see the result of our latest project. Our ongoing commitment to investing in R&D means that we can take advantage of advances in technology and develop products that are innovative and have the ability to take sonar technology into new markets and environments, offering real benefits and value in new and existing applications.”
Acoustic Specifications
Operating frequency: 720kHz
Angular resolution: 2.34° acoustic, 0.7° effective
Range: 0.2m to 50m
Number of beams: 128
Horizontal beam width: 90°
Vertical beam width: 20° (±10° about horizontal axis)
Update rate (typical operation): 3 to 20Hz (range dependent)
Range resolution: 8mm
Mode of operation: CW or CHIRP
Speed of Sound: Adaptive beamforming based on user specified speed of sound
Supply voltage: 12 to 48V DC
Power requirement: 4.5W – 17W (7.5W average)
Main port protocol: Ethernet (100Base-T) and/or Serial (RS232 or RS485)
Auxiliary port protocol: Serial (RS232 or RS485)
Connector type: Main - Seacon HUML-12, Impulse MKS(3) & Tritech Micron; Aux - Tritech Micron
Physical specification
Depth rating: 300m
Weight in air: 0.435kg
Weight in water: 0.244kg
Temperature rating: -10 to +35°C (operating), -20 to +50°C (storage)
EthernetScott McLaysonar technology
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