MTR100
MSI (Materials Systems Inc.)
543 Great Road Littleton, MA 01460 Tel: 978 486 0404 Email: info@msitransducers.com URL: www.msitransducers.com President: Dr. Leslie Bowen Vice President Products: Gerald Schmidt Vice President Engineering: Dr. Brian Pazol Business Development Manager: Rick Foster
MSI (Materials Systems Inc.) designs and manufactures custom sonar transducers and arrays for a wide range of applications, including side-scan, obstacle avoidance, subbottom profiling, swath bathymetry, mine hunting, swimmer detection, and acoustic communications. MSI's piezocomposite technology offers extremely broad bandwidth, high receive sensitivity, high source levels, and conformability for curved arrays. MSI personnel participated in the
earliest work on piezocomposites in the late 1970's, when the performance benefits were first demonstrated under ONR and DARPA funding. Since then, MSI has developed innovative injection molding techniques for cost-effectively producing piezocomposite transducers in high and low volumes. Technology Profile: MSI's piezocomposite arrays deliver broad bandwidth, allowing multiple beams to operate in distinct frequency bands; designed to allow greater
resolution and complex waveforms, enabling sonar systems to operate using many simultaneous sonar pings to achieve greater range, resolution and survey speed. MSI's piezocomposite arrays can be curved and shaded to achieve a specific beampattern or to achieve an efficient hydrodynamic profile. Measurement Technology NW
4211 24th Avenue West, Seattle, WA 98199 Tel: 206-634-1308 Email: lci@mtnw-usa.com · www.mtnw-usa.com LCI Engineering Director: Tom Rezanka Sales & Marketing Director: Dave Heiss
Measurement Technology NW provides complete winch instrumentation solutions for new and retrofit installations. MTNW is more than the manufacturer of LCI-90 and LCI-100 displays, but a source for payout and tension sensors, running
RBR Ltd.
27 Monk St., Ottawa, ON, CANADA K1S 3Y7 Tel +1(613)233-1621 Email: info@rbr-global.com · www.rbr-global.com
RBR Ltd. has seen rapid growth over the past ten years, especially for its oceanography and environmental monitoring instruments. Established in 1976 as a contract R&D company, RBR served government and education institutions for its first Dr. Li Wenchao 20 years. RBR's first autonomous data logger, developed in 1985, was a single channel temperature logger with a 12 bit dual slope a/d and 56K of battery-backed up RAM. The concept was slowly extended and developed into a range of loggers that included a CTD with one extra channel, and numerous specialised instruments for dedicated applications. In 1999 RBR focused its strategy on designing, developing and manufacturing world-class data logging equipment for harsh environments. Calibration to modern standards was needed, and RBR can now calibrate temperature to 0.002°, pressure to 0.015%, and conductivity to 0.003 mS/cm using the best available equipment and method. Calibration of DO, pH, ORP and turbidity is also carried out.The refocusing also saw an evolution of instruments to include an excellent 24 bit temperature recorder, then to extend that to other single channel and dual channel products all with a 24 bit a/d as standard. The power for these instruments was a set of "off-the-shelf" 3V lithium cell used in cameras. Memory has continued to fall in cost, with 2MB on introduction, then 4MB and now 8MB as standard for these instruments. Multi-channel instruments were based on the same technology, but with an internal serial bus and a modular construction. The basis of these instruments is a set of interface cards tailored to individual measurement sensors. These could be combined in any number of ways providing great flexibility, resulting in a series of instruments, known as the XR data loggers, which have been a great success. Recent developments for this series have included cards for a large data memory (up to 2Gbyte is now feasible), a generic serial card that can accommodate almost any serial device or sensor, and a very high resolution low power card to accept data from the resonant quartz gauges.
50 MTR July 2008
You don't have Macromedia Flash Player installed.
This content requires the Macromedia Flash Player.
Get Flash
www.digitalwavepublishing.com
Marine News