Contents Introduction ..........................1 Contents and Technical Specifications................... 3 Getting started ..........................3 General Features ......................... 3 Specifications ..........................4 2.3.1 Size and concentration range ..................4 2.3.2 Mechanical and electrical ................... 4 ASCII data file format (.ASC extension) ..................4 Binary data file format (.DAT extension)..................
For this reason, the recommended operating range is 75-95% for optical transmission. Sequoia Scientific, Inc. is pleased that you have chosen one of our products. Thank you! We strive to make our instruments rugged, reliable, and simple to operate. If you should have any difficulties or questions regarding this product, please feel free to contact your local distributor or us.
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Row 6, element 2 Time in HH:MM:SS format Row 6, element 3 Optical Transmission [dimensionless]. The optical transmission is the fraction of emitted laser light power that is passing undisturbed through the sample volume, and which therefore does not contribute to the scattering of light off of the particles.
The binary data file contains the raw, uncalibrated scattering data from the individual measurement(s). This file is used by Sequoia technical personnel for troubleshooting data and should be offloaded and archived responsibly together with the .ASC and .LOG files created by the instrument.
2.7 Size ranges The 44 size classes cover the size range from 0.34-500 µm. The table shows the lower and upper limit of each size bin in µm, together with the median size (also in µm). Size bin # Lower Upper Median 0.343...
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Operation 3.1 Introduction This section describes the procedures, functionality, and settings of the LISST-P |XR. The instrument is self-contained. If ORTABLE the battery is charged, you do not need a power supply or PC to obtain, process, store, or display particle size distributions. The LISST-P |XR only requires a PC to offload data;...
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Set the mixer speed and duration. When setting the mixer speed, it is important to observe if the mixer creates bubbles when mixing. If it does, make sure that the mixing chamber is full, or reduce the mixer speed. Be careful that the mixer speed is not too low, as this can cause particles to settle and not be measured.
Main Menu / Setup Menu There are four main buttons on the Main Menu screen: Measure, Display, Info, and Setup. The Measure button guides you through the measuring process in six steps. The Display button lets you scroll through already processed samples and display them on the touch panel display.
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The Sequoia button in the bottom left hand of the task bar serves as a home button. Press this at any time to return to the Main Menu without making any changes.
Measuring a Sample This section guides you through the measuring process. There are six steps in measuring a sample – see the upper left corner of the Quick Reference Sheet – detailed in the following. Before you start you should make sure that you have the following: 1) Particle-free water (e.g.
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Make sure the drain lever is in the closed position and then add the sample from your beaker to the mixing chamber. You can use the funnel to pour the sample through the hole in the center of the mixing chamber, or you can remove the lid and pour the sample in directly. Make sure that your sample is well homogenized and suspended before you pour it in so that you are not introducing bias into your results.
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The instrument now acquires a sample average while displaying a progress bar. Finally, the instrument computes the size distribution from the averaged data. This step takes about 45 seconds. During this time, you can rinse and drain the mixing chamber in preparation for the next sample.
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Displaying a Saved Measurement The upper right corner of the Quick Reference Sheet explains how to display an already processed and saved measurement. Tap the Display button on the Main Menu. If more than 10 files are stored you will need to use the arrows to scroll up and down the pages until you come to the page with the file you want to display.
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Deleting Files There are two ways to delete file(s) on the instrument: Using the touch panel display, or using the Windows software provided with the instrument. This section explains how you can delete single files on the instrument using the touch panel display.
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Reviewing Instrument Info and Settings To review the instrument settings and info, tap the Info button. The instrument info and settings screen will appear, displaying the current SOP settings, as well as instrument serial number, size range, firmware version and date, and battery and memory level.
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(for display in spreadsheets), the .DAT file is a binary data file containing the raw data (to be used by Sequoia for troubleshooting data), and the .LOG file is a file displaying instrument info and settings.
A file deletion confirmation box appears. You must confirm file deletion by clicking the Yes button. 8.6 Query Instrument For troubleshooting purposes, Sequoia may ask you to query the instrument. Make sure there is connection to the instrument (see chapter 8.2). Click the query icon. A window displaying the LISST-P...
Create report using the Excel template The enclosed EXCEL 2007 template spreadsheet loads the .ASC file created by the LISST-P |XR. When loaded, the user ORTABLE can then select which sample to display in order to generate a report sheet for the sample. Open up the EXCEL spreadsheet named ‘Portable V3 Report Template.xltx’...
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10 Handling, Cleaning, Maintenance and Storage 10.1 Handling WHEN HANDLING THE INSTRUMENT, AT ALL TIMES PLEASE REMEMBER THAT THE LISST-P |XR IS A HIGH-PRECISION OPTICAL INSTRUMENT. ORTABLE AVOID MECHANICAL SHOCKS AND IMPACT TO THE HOUSING, AS THIS MAY CAUSE MISALIGNMENT OF THE OPTICAL PARTS. AVOID SCRATCHING THE TOUCH PANEL DISPLAY.
10.3 Storage For storage for more than a few days, drain the instrument completely, clean the windows as described above, and put the lid on the mixing chamber to avoid dust falling into it. Store the instrument in a dry location between 5 and 45°C. Rechargeable batteries power the instrument.
11 FAQ’s What is an optical model? The foundation of the LISST-P |XR is the laser diffraction principle. This principle relies ORTABLE What model should I on the fact that if you know the optical properties of the particles in your sample, then you can choose? compute the size distribution of the particles.
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This may or may not be related to NTU. other turbidity units? Can I overcharge the No. If you charge the battery with the power adaptor supplied by Sequoia as part of the rechargeable battery inside instrument you cannot overcharge the battery.
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What liquids can I use for Use ONLY water (fresh or salt water), ethanol or isopropanol (isopropyl alcohol) or non-corrosive suspending my particles? oils for suspending particles! Use of solvents such as acetone, toluene etc. for suspending particles will permanently damage the instrument and void the warranty!! Does the instrument detect Regardless of the type of suspended particles, the LISST-P...
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Product (including, but not limited to, any breach of or default by SEQUOIA) will in no event exceed the purchase price paid by Customer to SEQUOIA for such Product. Further, SEQUOIA will not be liable for, or be in breach of or default on account of, any delay or failure to perform as a result of any cause, condition or circumstance beyond SEQUOIA's reasonable control.
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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. Portions of these items may be unpublished. SEQUOIA reserves all rights under applicable copyright laws.
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