Home > Macrosensors subsea/marine series of LVDT position transmitters available from Bestech Australia

Macrosensors subsea/marine series of LVDT position transmitters available from Bestech Australia

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Bestech Australia  offer the subsea/marine series custom submersible LVDT position transmitters, from Macrosensors. These transmitters are high-pressure and seawater-resistant LVDT-based linear position sensors, which can be incorporated into a variety of subsea measurement systems.

LVDT position transmitters are suitable for monitoring structural movement for long-term finite element analysis of pipelines, derricks, moorings and critical high stress members on offshore oil platforms. These transmitters are designed for use in either pressure-balanced, oil-filled containers or directly in seawater.

As measurements must often be obtained in seawater up to depths of 15,000 feet (approximately 4.5 km) and external pressures of 7500 psi, the LVDT position transmitters are designed from Monel 400, Inconel 625 and 316L stainless steel for pressure and corrosion resistance. The use of these materials in the structure of the LVDT assembly makes the transmitters resistant to seawater exposure.

A 4 to 20mA two-wire, loop-powered I/O is utilised to minimise the number of pressure-sealed I/O connections and to minimise noise over long transmission lines. Offsets can be made in the data acquisition system platform. The subsea/marine series of LVDT position transmitters have the following advantages:

  • low non-linearity
  • high resolution
  • high repeatability regardless of offsets caused by pressure and/or temperature

The subsea/marine series of LVDT position transmitters can be used in the following applications:

  • Off-shore drilling platforms
  • Pipeline monitoring
  • Choke valves
  • ROV and exploration
  • Mooring cables
  • Extensometers

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