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  • Articles | Sequoia Scientific
    and Twitter Follow Sequoia on Facebook and Twitter Sequoia October 7 2011 Sequoia is on Facebook www facebook com lissts and Twitter http twitter com sequoiasci Follow us for the latest updates about what we are doing and where we are going to exhibit and display LISST instruments Maximum current draws for LISSTs LISST Current Draws Sequoia June 29 2011 The table lists the current draws in mA for different LISST instruments under various scenarios powering up idling sampling and sleeping Power Up Idling Sampling Sleeping LISST 100X at 9VDC input 8 150 0 2 LISST STX LISST 25X LISST Deep 60 25 150 5 LISST SL LISST HOLO MBARI tests LISST HOLO on Autonomous Underwater Vehicles AUV s Monterey Bay Aquarium Research Institute tests LISST HOLO on AUV s Sequoia June 23 2011 The Monterey Bay Aquarium Research Institute MBARI tested Sequoia s LISST HOLO sensor in April 2011 during a coastal oceanography study in Monterey Bay California The experiment Testing Sequoia s LISST Holo on an Autonomous Underwater Vehicle Sequoia Updated Sept 2 2014 text and pictures supplied by Dr John Ryan MBARI Summary The Monterey Bay Aquarium Research Institute MBARI tested Sequoia s LISST HOLO sensor in April 2011 during a coastal oceanography study in Monterey Bay California The experiment What are the concentration limits for the LISST HOLO LISST HOLO concentration limits Sequoia June 7 2011 The article LISST Concentration Limits describes how to compute the upper concentration limits for the LISST instruments However the results in that article does NOT apply to Sequoia s LISST HOLO instrument Laser Diffraction 201 LISST How LISST works Sequoia April 15 2011 1 The Ring Detector 2 How Particle Sizes and Measurement Angles are Selected 3 Origin of the Matrix Formulation It s just algebra 4 Inversion of Data

    Original URL path: http://www.sequoiasci.com/library/articles/page/3/ (2016-02-13)
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  • Application Notes | Categories | Sequoia Scientific
    effects result from temperature fluctuations in air or water The same Read more LISST SL velocity thresholds October 11 2013 Is there a low velocity threshold for the LISST SL Does it need a minimum flow speed in order to sample What is that Absolutely The internal pump in the SL will adjust the intake velocity to match the ambient flow speed in order to make the sample Read more On line monitoring of silt in hydro power plants September 20 2013 Sequoia makes laser diffraction and acoustic backscatter sensors for this application On line monitoring of silt in hydro power plants is a reality using Sequoia s LISST Infinite or LISST Hydro instruments designed specifically for this purpose Read more LISST Technology Shows What Turbidity Measurements Miss out in a River Profile January 9 2013 Turbidity shows no response to large particles gets concentration wrong Sequoia January 09 2013 The use of turbidity sensors is widely prevalent in the sediment community The common practice is to calibrate the turbidity meter Read more Optical Transmission What is it July 12 2012 Optical Transmission What is it what it means and how it is used in LISST instruments Sequoia July 12 2012 Optical transmission is a measure of what proportion of light is transmitted through a turbid medium Light may be attenuated due to absorption Read more Previous Next More in About About Suspended Sediment Concentration and Particle Sizing Methods Course Staff News PiE Conference 2014 PiE Conference 2014 Customer List Newsletter Contact International Distributors Our Newsletter Sign up to get the latest news on Sequoia and our products Home Products Product Overview LISST Instruments LISST 100X LISST ABS LISST Portable XR LISST Holo LISST Deep LISST StreamSide LISST STX LISST Hydro LISST Infinite LISST VSF LISST STOKES Optical VSF Sensors

    Original URL path: http://www.sequoiasci.com/article_category/application-notes/page/2/ (2016-02-13)
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  • LISST-100X | Categories | Sequoia Scientific
    distribution The two models are called Spherical and Randomly shaped particles The Read more Are there any instrument specific files that I need in order to use my LISST 100X LISST Deep or LISST STX August 30 2013 Yes The files called factory zsc xxxx asc ringarea xxxx asc where xxxx is the serial number are instrument specific Also the files InstrumentData txt and LISST ini contains instrument specific information but these two files can contain information Read more How Accurate is the Concentration Measurement by LISST Instruments April 24 2012 LISST Concentration Accuracy Sequoia April 24 2012 First of all one must acknowledge that there are two types of errors Random errors and Bias errors Random errors can be averaged out whereas bias errors cannot see figure Read more vdcorr m October 31 2011 vdcorr m Sequoia October 31 2011 MATLAB script to correct 1 vd from invert p for the correct VCC can be found in the InstrumentData txt file or in the LOG file for LISST Portable and LISST StreamSide 2 vd to the laser Read more Maximum current draws for LISSTs June 29 2011 LISST Current Draws Sequoia June 29 2011 The table lists the current draws in mA for different LISST instruments under various scenarios powering up idling sampling and sleeping Power Up Idling Sampling Sleeping LISST 100X Read more Previous Next More in About About Suspended Sediment Concentration and Particle Sizing Methods Course Staff News PiE Conference 2014 PiE Conference 2014 Customer List Newsletter Contact International Distributors Our Newsletter Sign up to get the latest news on Sequoia and our products Home Products Product Overview LISST Instruments LISST 100X LISST ABS LISST Portable XR LISST Holo LISST Deep LISST StreamSide LISST STX LISST Hydro LISST Infinite LISST VSF LISST STOKES Optical VSF Sensors LISST

    Original URL path: http://www.sequoiasci.com/article_category/lisst-100x/page/2/ (2016-02-13)
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  • LISST-ABS | Categories | Sequoia Scientific
    Sequoia Scientific New Product LISST ABS Log In Register Home Article Page 2 News Sensitivity of Response of LISST ABS and OBS to Size Distribution Changes April 30 2015 This Note shows how the calibration of the LISST ABS acoustic backscatter sensor and of optical backscatter sensor OBS changes when water contains a broad distribution of particle sizes and why LISST ABS is inherently superior Particle size distributions Read more Next More in About About Suspended Sediment Concentration and Particle Sizing Methods Course Staff News PiE Conference 2014 PiE Conference 2014 Customer List Newsletter Contact International Distributors Our Newsletter Sign up to get the latest news on Sequoia and our products Home Products Product Overview LISST Instruments LISST 100X LISST ABS LISST Portable XR LISST Holo LISST Deep LISST StreamSide LISST STX LISST Hydro LISST Infinite LISST VSF LISST STOKES Optical VSF Sensors LISST SL LISST 25X FlowControl Instruments FlowControl Lab FlowControl Sub Radiative Transfer Models EcoLight S HydroLight Accessories How to Buy Request a Quote Terms Of Sale Support FAQ Downloads Warranty Info Installation Requirements Responsibilities Warranty Register a Product Returns Contact Support Library Articles Technical Papers Standards About Staff News Events PiE Conference 2014 Customer List Newsletter Contact

    Original URL path: http://www.sequoiasci.com/article_category/lisst-abs/page/2/ (2016-02-13)
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  • vdcorr.m | Sequoia Scientific
    the Volume Conversion Constant for your instrument instrument specific It can be found in the InstrumentData txt file for LISST 100X LISST STX and LISST SL instruments and in the LOG file for LISST Portable and LISST StreamSide instruments flref is the factory laser reference value for you instrument For LISST 100X and LISST STX instruments this is element 36 in the factory zsc file For LISST SL instruments this is element 40 in the factory zsc file For LISST Portable and LISST StreamSide instruments the flref can be found on the Get Background display or in the LOG file lref is the laser reference value during measurement For LISST 100X and LISST STX it is element 36 in the DAT file For LISST SL it is element 40 in the DAT file For LISST Portable and LISST StreamSide it is element 36 in the DAT file OAM 10 31 2011 function vd vdcorr vd VCC flref lref if nargin 4 error You must input 4 variables vd the Volume Conversion Constant VCC the factory zscat laser reference value element 36 and the laser reference for each individual measurement element 36 in the DAT file end do check to make sure that lref is as large as the number of rows in vd rows cols size vd if length lref rows error lref has a length of num2str length lref elements vd has num2str rows rows lref must have the same length as the number of rows in vd end vd vd VCC for row 1 rows vd row vd row flref lref row end Questions to this application note Email us More in Library Library Articles Technical Papers Standards Our Newsletter Sign up to get the latest news on Sequoia and our products Home Products Product Overview LISST Instruments

    Original URL path: http://www.sequoiasci.com/article/vdcorr-m/ (2016-02-13)
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  • LISST-Deep | Categories | Sequoia Scientific
    powering up idling sampling and sleeping Power Up Idling Sampling Sleeping LISST 100X Read more Laser Diffraction 201 LISST April 15 2011 How LISST works Sequoia April 15 2011 1 The Ring Detector 2 How Particle Sizes and Measurement Angles are Selected 3 Origin of the Matrix Formulation It s just algebra 4 Inversion of Data the Information Content Read more Laser Diffraction 101 LISST April 14 2011 How LISST Works Sequoia April 14 2011 Laser Diffraction 101 Sequoia realizes that for some people the principle behind laser diffraction seems difficult to understand The purpose of this article and Laser Diffraction 201 Read more The Influence of Particles Outside the Size Range of the LISST February 23 2011 The Influence of Particles Outside the Size Range of the LISST Sequoia February 23 2011 A question that Sequoia often gets asked is What happens when the suspension contains particles outside the measurement range The short answer Read more Comparing volume concentration and mass concentration April 7 2010 How does µl l and mg l compare Sequoia April 7 2010 A question that Sequoia often gets asked is How does the volume concentration in units of µl l from the LISST compare to mass concentration in mg l And how do I convert Read more Previous Next More in About About Suspended Sediment Concentration and Particle Sizing Methods Course Staff News PiE Conference 2014 PiE Conference 2014 Customer List Newsletter Contact International Distributors Our Newsletter Sign up to get the latest news on Sequoia and our products Home Products Product Overview LISST Instruments LISST 100X LISST ABS LISST Portable XR LISST Holo LISST Deep LISST StreamSide LISST STX LISST Hydro LISST Infinite LISST VSF LISST STOKES Optical VSF Sensors LISST SL LISST 25X FlowControl Instruments FlowControl Lab FlowControl Sub Radiative Transfer Models

    Original URL path: http://www.sequoiasci.com/article_category/lisst-deep/page/2/ (2016-02-13)
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  • Maximum current draws for LISSTs | Sequoia Scientific
    various scenarios powering up idling sampling and sleeping Power Up Idling Sampling Sleeping LISST 100X at 9VDC input 8 150 0 2 LISST STX LISST 25X LISST Deep 60 25 150 5 LISST SL LISST HOLO at 12 VDC input 1 200 500 600 880 20 LISST StreamSide w o pump at 12 VDC input 500 LISST HYDRO LISST Infinite LISST Pump 2 500 5 000 10 000 LISST Portable LISST STOKES 20 1 100 NOTES For the LISST HOLO the two sampling current draws are for laser on and laser and camera on respectively The LISST Pump for the LISST StreamSide LISST Infinite and LISST HYDRO has 3 speed settings depending on total vertical lift and horizontal length The current draws are listed for each Updated 7 13 2011 More in Library Library Articles Technical Papers Standards Our Newsletter Sign up to get the latest news on Sequoia and our products Home Products Product Overview LISST Instruments LISST 100X LISST ABS LISST Portable XR LISST Holo LISST Deep LISST StreamSide LISST STX LISST Hydro LISST Infinite LISST VSF LISST STOKES Optical VSF Sensors LISST SL LISST 25X FlowControl Instruments FlowControl Lab FlowControl Sub Radiative Transfer Models EcoLight S HydroLight

    Original URL path: http://www.sequoiasci.com/article/maximum-current-draws-for-lissts/ (2016-02-13)
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  • MBARI tests LISST-HOLO on Autonomous Underwater Vehicles (AUV’s) | Sequoia Scientific
    HOLO on Autonomous Underwater Vehicles AUV s MBARI tests LISST HOLO on Autonomous Underwater Vehicles AUV s Monterey Bay Aquarium Research Institute tests LISST HOLO on AUV s Sequoia June 23 2011 The Monterey Bay Aquarium Research Institute MBARI tested Sequoia s LISST HOLO sensor in April 2011 during a coastal oceanography study in Monterey Bay California The experiment was part of a project that is advancing ocean observing systems of which autonomous underwater vehicles AUVs are an essential component MBARI scientist John Ryan obtained stunning images of plankton in the bay using LISST HOLO down to depths of 40 m below the surface an montage of the different types of plankton and particles that were observed with the LISST HOLO is shown below More info can be found here Sequoia Scientific Inc began operations in February 1995 The company s main business is to manufacture instrumentation and software for scientific research and environmental monitoring and carry out academic research Sequoia is located in Bellevue Washington twenty minutes east of downtown Seattle All research and commercial activities of the company are performed at the Bellevue facility The LISST HOLO a submersible digital holographic camera is Sequoia s latest development shipping since December 2010 More in Library Library Articles Technical Papers Standards Our Newsletter Sign up to get the latest news on Sequoia and our products Home Products Product Overview LISST Instruments LISST 100X LISST ABS LISST Portable XR LISST Holo LISST Deep LISST StreamSide LISST STX LISST Hydro LISST Infinite LISST VSF LISST STOKES Optical VSF Sensors LISST SL LISST 25X FlowControl Instruments FlowControl Lab FlowControl Sub Radiative Transfer Models EcoLight S HydroLight Accessories How to Buy Request a Quote Terms Of Sale Support FAQ Downloads Warranty Info Installation Requirements Responsibilities Warranty Register a Product Returns Contact Support Library Articles

    Original URL path: http://www.sequoiasci.com/article/mbari-tests-lisst-holo-on-autonomous-uderwater-vehicles-auvs/ (2016-02-13)
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