Sequoia LISST-SL Operating Manual Download Page 2

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Technical assistance

To obtain technical assistance please contact your local
distributor (a list can be found on

http://www.SequoiaSci.com/contact/international.aspx?Section
Name=contact

) or a Sequoia Technical Service Representative

listed below.

Please be sure to include the instrument serial number

with any correspondence.

Factory Technical Service Representatives

Randy Srnsky

[email protected]

(+1) 425-641-0944 ext. 110

Chuck Pottsmith

[email protected]

(+1) 425-641-0944 ext. 107

Ole Mikkelsen

[email protected]

(+1) 425-641-0944 ext. 108

©This document is copyrighted by SEQUOIA SCIENTIFIC, INC. It shall not be reproduced,
disclosed, used in whole or part, for any purpose, without the specific written authorization of
SEQUOIA SCIENTIFIC, INC.

Summary of Contents for LISST-SL

Page 1: ...Operating Manual LISST SL Version 2 1 LISST SL...

Page 2: ...ument serial number with any correspondence Factory Technical Service Representatives Randy Srnsky randy srnsky SequoiaSci com 1 425 641 0944 ext 110 Chuck Pottsmith pottsmith SequoiaSci com 1 425 641...

Page 3: ...nload from TCB 17 IV Using the LISST SL System in a Laboratory 18 1 First Assembly and Test in Laboratory 18 2 Background File acquisition 19 3 Instrument health check 19 4 Collecting Test Data in a L...

Page 4: ...III FAQ s 31 APPENDIX A File names File Formats and Size Classes 33 APPENDIX B Purging the Pitot System 37 APPENDIX C Cleaning the Optics 40 APPENDIX D Background Files 42 APPENDIX E Detailed Accessor...

Page 5: ...ot order a B reel you will need to procure one from one of many vendors in the US There are many more items of accessories and software for downloading and processing raw data A full list of items shi...

Page 6: ...he depth sensor Temperature is sensed in the water passage within the instrument On the nose is an intake tube 9 on the instrument axis and above it is the pitot tube velocity sensor 5 To prevent larg...

Page 7: ...ithium ion battery and a computer system that controls the display on a touch screen panel The battery powers the LISST SL sensor the computer within the TCB and the touch screen All commands are thro...

Page 8: ...able in several publications For more detail we invite the reader to review the Application Note How LISST instruments measure the size distribution and concentration of particles on our website http...

Page 9: ...we repeatedly emphasize maintaining clean optics and low stable values of background scattering on the inner rings See also Appendix D on background scattering General Precautions The instruments are...

Page 10: ...information about some special topics 5 7 13 Videos In This Manual In this manual you will occasionally see this video icon preceded by one or more numbers It means that video s of this number is ass...

Page 11: ...ent foam stands Nose wrench 3 ea 1 m flex tubes Filter wing nuts 2 Funnels Cleaning solution Tweezers Cleaning Rod Plastic sampling tube caps Rubber bands Syringes 2 ea Red Taper Plugs Cleaning patche...

Page 12: ...operation 0 30 m 100ft Operating Temperature 0 400 C 32 1040 F River velocity 0 3 m sec or 0 10 ft sec Isokinetic control range 0 5 to 3 m sec or 1 5 to 10 ft sec pump minimum speed is set to a low v...

Page 13: ...y of when created instrument serial number firmware version in TCB name of file with Concentration and Mean Size name of Raw Scattering data binary file associated background file Z asc below and unit...

Page 14: ...3 2 65 3 13 2 88 4 3 13 3 69 3 40 5 3 69 4 35 4 01 6 4 35 5 14 4 73 7 5 14 6 06 5 58 8 6 06 7 15 6 59 9 7 15 8 44 7 77 10 8 44 9 96 9 17 11 9 96 11 8 10 8 12 11 8 13 9 12 8 13 13 9 16 4 15 1 14 16 4...

Page 15: ...ble tube is also attached to the water exit end Leave this as is It will be used for acquiring the in situ Background file B Reel Recall from Chapter I that the B reel is a battery powered or manually...

Page 16: ...a panel showing information on the instrument Pressing the Done button returns to the Setup Menu The button leads you to an option to set pump speed Leave it on Auto For some laboratory work e g to b...

Page 17: ...ory system CALIBRATION Recall that the Calibrate function records a Background file This file contains measurements of light scattered from imperfections of optics on the 32 ring detectors A few other...

Page 18: ...ng 20 samples roughly 25 seconds the display will show your new background data and the factory values red line Ideally the two should be very similar Also displayed at the top of frame are two variab...

Page 19: ...nction We repeat See Appendix D to learn more about Background files and when they are acceptable MEASURE ACQUIRE DATA This button is meant to take you to data collection After familiarizing you we wi...

Page 20: ...samples saved in the data file the filename the date and local time the water temperature and the state of the battery Pump supply voltage and current are displayed in a crude semi quantitative way T...

Page 21: ...t off The LED is Red when it is charging Charging Lithium batteries requires smart chargers If you attempt to charge the battery with some other charger your warranty will be voided The battery charge...

Page 22: ...ilter cartridge to the tail fin and connect the filter inlet tube to the pump outlet quick disconnect fitting Place a carboy filled with clean water less than one meter above the LISST SL Connect a in...

Page 23: ...y background in the middle rings This means the optics can be cleaned Dirt on the windows of the test cell can explain this excess light The inner rings show large amount of light but the Lp and Lref...

Page 24: ...set up a small magnetic stir bar so that the sediment won t all settle out Stir vigorously Connect one water filled flexible tube 1 4 inch ID or 6 mm ID with a pinch clamp to the intake of the LISST S...

Page 25: ...oad data from the instrument to your PC and process it See Chapter VI Turn off power on the TCB You can now store the instrument TO AVOID FOULING THE INTERNAL WINDOWS ALWAYS DRAIN ALL TURBID WATER OUT...

Page 26: ...perature You must pack the following items LISST SL Topside Controller Box B reel A platform for the B reel Gallon of filtered clear water A 0 2 micron filter cartridge provided by Sequoia Tubing and...

Page 27: ...ll in river with the filter etc connected use the MEASURE button to view Concentration If it is in the range of approximately 1 mg l the background is good Cancel and stop the instrument Pull up the L...

Page 28: ...ays immediately cover the pitot tube with a pinched tube or plastic cap provided with the instrument It is a good idea to wash the exterior of the instrument and remove sediment from the pressure port...

Page 29: ...e Size Distribution which contains the 32 bin size distributions are created from post processing dat file through the Windows software These Particle Size Distribution files have the name Rxxxxxxx ps...

Page 30: ...e buttons and their functions next OFFLOAD DATA As the name implies when you are connected to the TCB PROCESS RAW DATA This button prompts you for the names of the background and other files and then...

Page 31: ...button You will be prompted to select the file to process the instrument serial number and the background file that was collected with this data file The processing takes very little time and is typi...

Page 32: ...ttom right 7 Formats of Results file The formats of all files txt csv and asc are provided in Appendix A 8 Presenting Results Sequoia Scientific Inc does not provide software for you to prepare your r...

Page 33: ...storage It is a good idea to connect a hose to the intake and run tap water through the system This removes any grains that may have accumulated in the pump Remove the pitot tube cap and clean the scr...

Page 34: ...for a long duration it is a good idea to run chlorinated water through the system to prevent biological growth on internal surfaces The same is recommended with the filter provided for Background file...

Page 35: ...brary Our software that processes raw data files incorporates irregular particle shape Does the LISST SL require any calibration No All that is required is that the user makes a background measurement...

Page 36: ...les With changing grain size NTU itself changes and it is meaningless to do a cross calibration Can I overcharge the rechargeable battery inside the instrument If you charge the battery with the power...

Page 37: ...ers to instrument serial number Ringarea_2005 asc A file used by the data processing program It applies geometrical factors to raw data Also used in processing data in MATLAB Rxxxxxxx txt Text File cr...

Page 38: ...tion of the 50 values is below Zxxxxxxx ASC Background file The format is identical to the dat file shown above Rxxxxxxx psd Particle Size Distribution from post processing dat file It is a binary fil...

Page 39: ...LISST SL V2 1 User s Guide 35...

Page 40: ...3 13 3 69 3 40 5 3 69 4 35 4 01 6 4 35 5 14 4 73 7 5 14 6 06 5 58 8 6 06 7 15 6 59 9 7 15 8 44 7 77 10 8 44 9 96 9 17 11 9 96 11 8 10 8 12 11 8 13 9 12 8 13 13 9 16 4 15 1 14 16 4 19 3 17 8 15 19 3 2...

Page 41: ...front bulkhead You will then reassemble the nose to the bulkhead underwater in a tank Preparation of the pitot velocity sensor prior to deployment can reduce the need for purging the instrument in th...

Page 42: ...ieces and threads as they may move during reassembling The syringe provided can be helpful for dislodging bubbles Various pumping schemes can also be used for cleaning and de bubbling The differential...

Page 43: ...nd the results viewed on the TCB Set the column of water in the tubing at 30 cm 12 inches above the water surface Select the Measure mode on the TCB The velocity should be approximately 2 4 m sec 8 ft...

Page 44: ...verify the cleanliness of the windows check the View Rings function under the Background Calibration check the View Rings box on the lower left This will be like a normal calibration but the View Rin...

Page 45: ...LISST SL V2 1 User s Guide 41...

Page 46: ...proceed Read the Noise Test below Is it scintillation Scintillation is the scattering of light by turbulent eddies with temperature differences between water and instrument The identifier for this is...

Page 47: ...Only 5 Pin Impulse Plug and Sleeve Protection of SL Underwater Connector in Transit or Storage 3 pin Impulse Plug Nose Wrench Used to Remove Nose Section Tweezers O ring Pick Tool Kit For Removing Ins...

Page 48: ...Copper Cooling Coil Rubber Bands to Cover Pressure Ports Plastic Pitot Tube Caps for Pitot Tube Tozzle in Storage Plastic Intake Tube Caps Syringes 3 8 x 3 8 Tube Adapter x 3 8 Tube Adapter Tube Adap...

Page 49: ...tain a waterproof isolated connection to the Power In The wires for the Test Points are not used and should be terminated and sealed The text and illustrations below describe the wiring details for th...

Page 50: ...il fin 15 Attaching the cleaning patch to clean the optics 16 Inserting the cleaning rod to clean the optics 17 An example of a head pressure applied to the pitot tube 18 Applying an artificial head o...

Page 51: ...V2 1 User s Guide 47 29 An example of View Rings After Cleaning the optics 30 Switching from View Rings to Background Collection 31 Connecting the B Reel cable to the SL 32 Connecting the TCB to B Re...

Page 52: ...ded for repaired or replacement Products as provided for herein the Warranty Period If Customer does not give SEQUOIA such written notice within the Warranty Period then such warranties will be satisf...

Page 53: ...PARAGRAPH 1 5 Exclusive Remedies CUSTOMER S RIGHTS AND REMEDIES SET FORTH IN PARAGRAPHS 2 AND 3 ABOVE ARE EXCLUSIVE AND IN LIEU OF ANY AND ALL OTHER RIGHTS AND REMEDIES FOR ANY BREACH OF OR OTHER FAIL...

Page 54: ...e Rights in Technical Data and Computer Software clause at 48 C F R 252 227 7013 or in subparagraph c 2 of the Commercial Computer Software Restricted Rights clause at 48 C F R 52 227 19 as applicable...

Page 55: ...LISST SL V2 1 User s Guide 51 NOTES...

Page 56: ...LISST SL V2 1 User s Guide 52 Copyright Sequoia Scientific Inc 2700 Richards Rd Suite 107 Bellevue WA 98005 http www SequoiaSci com...

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