Unique Group continues to conduct business as usual under a normal schedule, however, the safety and well-being of our employees and customers is always our highest priority. We are closely monitoring the Coronavirus pandemic and putting in place proactive measures to keep our communities safe and operational. Read more

Survey Equipment

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Sonardyne 7986 Lightweight Release Transponder

Availability: Rental, Ex-Rental Sale

Datasheet

Sonardyne 7986 Lightweight Release Transponder

Availability: Rental, Ex-Rental Sale

The LRT is depth rated to 500 metres making it the ideal choice for use in continental shelf waters. Field replaceable alkaline or long-life lithium battery packs give a listening life of 18 months and 51 months respectively. A ‘screw-off’ release mechanism ensures a positive release action that overcomes any biological growth and all external parts are made of high-strength plastics that provide excellent environmental corrosion resistance. LRTs are controlled using the Type 7967 Surface Command Unit (SCU) comprising a low-cost deck unit and remote transducer on 10 metres of cable.

The SCU is initially used to program the acoustic identity of the LRT, test the transponder and load the release nut prior to deployment. Once deployed, the deck unit can measure ranges to the transponder and prior to sending a secure release command, relocate the transponder. The SCU can be controlled via RS232 enabling raw range data to be logged to a PC.

Key features

  • Safe Working Load of 125kg
  • Depth rated to 500 metres
  • Up to 51 months deployment with long-life lithium battery pack
  • Hundreds of secure identities; field programmable with deck unit
  • Reliable, 'screw-off' release
  • Rugged, compact design
  • Compatible with Scout USBL, ROVHomer, Homer-Pro and Prospector positioning/relocation systems

An optional attachment for the LRT is a rope canister that allows items left on the seabed, for example; tools, cables and salvage, to be quickly and easily hauled up. It works by mooring one end of the rope to the item on the seabed and the other end to the LRT via the attached canister of rope. As the transponder ascends to the surface, the high-strength rope is deployed from the canister. This line can then be used to pull up the item directly or retrieve heavier tag lines. LRTs can be supplied with ±15° or ±30° tilt sensors. This allows the user to acoustically check that the LRT and its mooring have been correctly deployed on the seabed.

Read More
Item added to basket. Click here to view basket.
Please select a size from below to proceed.
Please, change quantity or contact us and our Sales Team will reach out to you shortly.
Product is out of stock. Please, contact us and our Sales Team will reach out to you shortly.
Product is out of stock, but can be delivered in 0 weeks time
Request a Quote

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

The LRT is depth rated to 500 metres making it the ideal choice for use in continental shelf waters. Field replaceable alkaline or long-life lithium battery packs give a listening life of 18 months and 51 months respectively. A ‘screw-off’ release mechanism ensures a positive release action that overcomes any biological growth and all external parts are made of high-strength plastics that provide excellent environmental corrosion resistance. LRTs are controlled using the Type 7967 Surface Command Unit (SCU) comprising a low-cost deck unit and remote transducer on 10 metres of cable.

The SCU is initially used to program the acoustic identity of the LRT, test the transponder and load the release nut prior to deployment. Once deployed, the deck unit can measure ranges to the transponder and prior to sending a secure release command, relocate the transponder. The SCU can be controlled via RS232 enabling raw range data to be logged to a PC.

Key features

  • Safe Working Load of 125kg
  • Depth rated to 500 metres
  • Up to 51 months deployment with long-life lithium battery pack
  • Hundreds of secure identities; field programmable with deck unit
  • Reliable, 'screw-off' release
  • Rugged, compact design
  • Compatible with Scout USBL, ROVHomer, Homer-Pro and Prospector positioning/relocation systems

An optional attachment for the LRT is a rope canister that allows items left on the seabed, for example; tools, cables and salvage, to be quickly and easily hauled up. It works by mooring one end of the rope to the item on the seabed and the other end to the LRT via the attached canister of rope. As the transponder ascends to the surface, the high-strength rope is deployed from the canister. This line can then be used to pull up the item directly or retrieve heavier tag lines. LRTs can be supplied with ±15° or ±30° tilt sensors. This allows the user to acoustically check that the LRT and its mooring have been correctly deployed on the seabed.

Read More
We use cookies to ensure that we give you the best experience on our website. By clicking Accept, you consent to store on your device all technologies described in our Cookie Policy. Accept