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Issue 006   January 2008

LinkQuest Inc., San Diego, California USA


LinkQuest's FlowQuest acoustic current profilers now have the Discharge Measurement function which can be used to measure the discharge in rivers, estuaries, natural streams and constructed channels. This function comes in the form of an option for the FlowQuest 600 and 1000 acoustic current profilers. For the discharge measurement application, the standard FlowQuest 600 or 1000 acoustic current profiler is steadily deployed on a moving vessel such as a catamaran, a small floating platform or a small boat with the transducer pointing downward. The profiler measures the water velocities, the ship's velocities, the depth and other related information required for discharge measurement by doing current ensemble and bottom tracking pings alternatively. Advanced algorithms are utilized to calculate the sectional discharge and the total discharge in real-time. The sectional discharge, total discharge, the ship's trace, the bottom depth and related velocities are displayed in the FlowQuest software. The FlowQuest Discharge Measurement software can also be used for user friendly off-line analysis. The user can select different measurement starting and ending points and different models to revise and optimize the discharge calculation results. With very fast ping rate, automatically adjusted cell size and no ambiguity error, the Discharge Measurement function in the FlowQuest profilers is capable of more accurately measuring both normal and unsteady (or tidally affected) flow. It is also dramatically faster than conventional discharge measurement systems and has improved accuracy. Click for more FlowQuest Discharge Measurement information.

LinkQuest's NavQuest 600 Micro DVL (Doppler Velocity Log) has gained worldwide high popularity in year 2007. Since its commercial launch less than a year ago, the Micro DVL, with depth rating from 800 to 7000 meters, has been sold to more than 10 countries to large organizations such as Fugro and NOAA and small university research groups alike. Applications include deepwater AUV navigation, shallow water AUV navigation, ROV station keeping, ROV velocity, altitude and current speed monitoring, manned submersible navigation, and diver navigation. The NavQuest 600 Micro DVL is the world's smallest and lightest Doppler Velocity Log. In its standard configuration with pressure housing, NavQuest 600 Micro DVL is about 12.6 cm in diameter, 17.0 cm in length and weighs less than 1.2 kg in water. In the OEM configuration without pressure housing, the NavQuest 600 Micro DVL is about 12 cm in length and weighs less than 0.8 kg. It is by far the smallest and lightest Doppler Velocity Log in the market. With such compact build, the NavQuest 600 Micro DVL is still capable of reaching up to 110 meters in maximum altitude (range), significantly more than competing products working in similar operation frequencies. The smallest minimum altitude is up to 0.3 m which allows users to operate their submersibles much closer to the bottom than any competing DVLs working in similar frequencies. Click for more Micro DVL information.

Underwater Intervention 2008, January 29 - 31, 2008
Booth 905,
Morial Convention Center, New Orleans, Louisiana
LinkQuest will attend the Underwater Intervention 2008. We would welcome the opportunity to meet with you.

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Copyright 2006 LinkQuest Inc. All rights reserved.