Sound Velocity Sensor

Valeport's miniSVS sound velocity sensor has been upgraded to offer higher specifications, with temperature or pressure measurement options. The miniSVS has been engineered to now include a high-accuracy PRT temperature sensor to increase versatility and compatibility with third-party systems. Together with standard titanium housing and a specially developed carbon composite sensor, the miniSVS offers durability and resistance to corrosion. The carbon composite sensor offers benefits in resisting deformity due to impact, thus not affecting calibration, and has virtually zero expansion with temperature, so that acoustic path length remains constant whatever the water temperature. Valeport's digital signal processing technique ensures that... (read more)
2005-06-23 12:00:00

Sonardyne Motion Sensor Technology

Sonardyne International has launched a new marine Attitude Heading and Reference System (AHRS): Lodestar. Lodestar has been developed to overcome the problems associated with conventional sensor platforms. The Lodestar AHRS is a natural extension of the Sonardyne product range and has been developed for seamless integration with the company’s widely used LBL (Long BaseLine) and USBL (Ultra-Short BaseLine) acoustic positioning systems. It will also be welcomed by users with any requirement for motion compensation to support operations in any sea conditions. These are likely to include platform stabilisation, dynamic positioning, buoy monitoring, subsea construction and towfish and ROV/AUV operations. Available... (read more)
2007-04-05 02:42:46

Peripheral Survey Sensor Guidelines

The ‘Guidelines for the management of peripheral survey sensors’ (IMCA S 021) have been developed under the direction of the International Marine Contractors Association (IMCA, UK) Offshore Survey Division management committee. The document provides guidance towards a more standardised approach to the timing of checks, verifications and calibrations, leading to more consistent maintenance practices and potentially better management of survey applications. In addition to the Executive Summary, the 24-page document includes a glossary and details of terminology used and an introduction. There is a section devoted to general considerations highlighting five main areas – testing as a function of time,... (read more)
2013-12-12 09:51:52

Submarine Sensor Support Contract

Chelsea Technologies Group has been awarded a nine and a half year contract by J+S Ltd to provide post-design services for support of the Sonar 2081 submarine oceanographic sensor suite, under the Miscellaneous Sonar Equipment programme. The oceanographic sensors are designed to provide improved situational awareness and enhanced knowledge of the ocean environment. The robust, high precision sensors incorporate novel built-in-test technologies to extend calibration intervals and decrease maintenance costs.The work, which includes service, repair and calibration, will be undertaken at Chelsea's facility in the UK utilising the NAMAS accredited calibration laboratory. (read more)
2010-03-25 10:21:54

Marine Motion Sensor

Kongsberg Maritimes has introduced a new member in its family of Motion Monitoring Units at Ocean Business 2015. The MRU 5+ MK-II is part of a range of MRUs for diverse marine applications including: motion compensation of multi-beam echo sounders, high speed craft motion control and damping systems, heave compensation of offshore cranes, dynamic positioning, hydro acoustic positioning, ship motion monitoring, ocean wave measurements and antenna motion compensation and stabilisation. The MRU 5+ MK-II uses a new sensing element (Coriolis force resonator) in the new design of integrated MEMS gyros. With less than 0.002° angle noise, and Angle Random Walk... (read more)
2015-04-18 12:03:00

Radar Level Sensor

The Valeport VRS20 Radar Level Sensor uses non-contact technology and can be installed easily. The device uses 25GHz pulsed k-band radar to measure water level to an accuracy of ±10mm. It has been designed to work with Valeport’s TideMaster tide logger or to operate as a stand-alone device with optional integrated GPRS telemetry. Alternatively it can interface with a third-party data logger. Non-contact radar technology avoids issues of traditional submerged devices, such as fouling and corrosion. Data collection is a simple process for the Valeport VRS20, with RS232, RS485 and SDI 12 communication as standard. With a wide range 9... (read more)
2013-01-29 12:00:00

Multi-sensor Coastal Mapping

Integrating Active and Passive Sensors Provides Major Gains
Fugro has tested a multi-sensor approach to balance growing data needs with limited agency budgets. Coastal mapping programmes are quickly becoming a priority for government agencies across the globe. The desire to better define and understand the land/sea interface is based on several interrelated factors, including sea-level rise and its impacts on coastal populations, the growth of and reliance on a blue economy, and the need to maintain critical nearshore habitats in the midst of a changing landscape.  (By José Martínez Díaz and Don Ventura, Fugro USA) In support of its hydrographic charting programme, the US National Oceanic and Atmospheric Agency... (read more)
2016-12-13 09:47:02

Wave Sensor for Echosounders

Innovation4C has presented Wavemapper, a heave sensor designed for single beam echosounders based on technology pioneered in space. Two years of development resulted in this sensor with space based algorithms. Wavemapper's MEMS technology offers a cost-effective miniaturised sensor platfom that has been succesfully tested on various vessels and under various port, harbour and coastal conditions.A dry unit or a wet version are available. The wavemapper product line requires no calibration, is according to the supplier small and portable, and claims to be cost-effective. (read more)
2006-09-21 12:00:00

APT Sensor and Inductive Modem

Soundnine (S9, USA) is to launch two products at Ocean Business 2015: the Enduro APT Recorder and Ulti-modem inductive modem. With high-accuracy sensors and advanced real-time underwater telemetry, they offer new capabilities and value in ocean observing. The Enduro APT Recorder is a uniquely small, robust instrument that measures acceleration, pressure and temperature, logs internally and transmits data in real time over plastic-jacketed wire rope commonly used on moorings. S9’s dual mode inductive technology is fully compatible with the prevailing inductive telemetry (Sea-Bird), and also offers a fast transmit mode when communicating with an Ulti-modem. The size and power requirements... (read more)
2015-04-08 02:30:00

Sediment Sensor LISST-200X

Geometius, The Netherlands, has introduced the LISST-200X of Sequoia Scientific as the successor of the LISST-100X. The device is a small-size submersible particle size analyser with integrated depth and fast response temperature sensors to improve profiling data. This model measures particle sizes from 1 to 500 microns at up to 600 metres water depth. It outputs the mean size and total volume concentration as analogue voltage or digital while simultaneously storing the full size distribution internally for later downloading. The LISST-200X measures particle size and concentration in rivers, streams, ports, harbours, coasts and oceans, whether for biological, sediment transport or... (read more)
2016-04-11 08:57:47
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