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r 7 <br /> ✓*"""� a .g:.« •�1=-. P•..,y,..,y "'"°..°vM" 9*+-*..•n.e'nT* R v`rc:"..ii' ,.,.i-':.�C w�+,w.Pt"x `.-Marc �*rr+.w 5t so'Tas �+e+.nvra+h+rt+s< <. .'w-A++,°a.T"2fe�'r^`.'::^'ti.. <br /> Levelogger Operation <br /> Programming of the Leveloggers requires one optical reader. <br /> f Place the first Levelogger into a reader attached to a desktop <br /> or portable computer. Then fill out the various fields in the <br /> program screen with site information and choice of sampling <br /> regime. <br /> The Leveloggers can then be started immediatly, or with a <br /> I future start time. They can be pre-programmed and taken to <br /> the site at a late time. If future start is chosen, no rnernory <br /> is used until field installation. If immediate start is chosen the <br /> operator can see the loggers working before deploying them. <br /> A manual measurement of the initial depth to water is taken <br /> in each well, and noted as a base line measurement. If a <br /> Barologger is to be used for barometric pressure measure- <br /> ments,it is set above high water level in one location on site. <br /> If direct read cable has been chosen,data can be viewed and <br /> retrieved•from the Levelogger at anytime, using the PC <br /> Software Interface Cable and a portable computer. <br /> Leveloggers are programmed using a desktop or portable To download data from a Levelogger suspended on wireline, <br /> computer and an optical reader.The software is very easy to simply remove it from the well and place it in an optical <br /> use and is available in DOS or Windows 95 and up. Setup reader attached to a computer. This can be done back in the <br /> and programming are very fast and simple. office, or on site with a portable computer. Data that has <br /> The software can be used with any type of Levelogger been collected is retained in the Levelogger until the Levelogger <br /> including previous versions of the Levelogger. There is ample has been reprogrammed. <br /> space for entering site,customer and sampling information. <br /> Leveloggers may be synchronized to the computer clock,and <br /> there are options for immediate start or a future start time. <br /> The battery has an estimated life of 8-10 years and the life <br /> remaining is indicated on the programming screen. <br /> r The measurement time interval can be from 0.5 seconds to <br /> 99 hours with linear sampling.In addition,the LT Levelogger <br /> has linear, event-based and 3 logarithmic sampling options. <br /> With the Windows software and a Barologger, barometric f <br /> compensation is highly accurate and problem free. There is <br /> also a Barometric Compensation Wizard,which can be used 1 <br /> prior to export of the data to other programs. s { <br /> The software allows immediate viewing of the data in graph - I <br /> or chart form,or simple downloading for future examination. <br /> It also allows easy export into a spreadsheet or database for <br /> further processing. LTC Conductivity Leveloggers <br /> LTC Leveloggers have a conductivity sensor as well as the <br /> pressure and temperature sensors in the standard LT <br /> Leveloggers. They have linear, or event-based sampling <br /> options and a conductivity calibration wizard as well as a <br /> barometric compensation wizard. They are ideal for use in <br /> -.� the following applications: <br /> w • Plume monitoring and remediation sites <br /> • Salt water intrusion <br /> "'16 • Leachate from landfills, mine tailings,waste disposal, <br /> Y�r <br /> storage sites, and more <br /> • Agricultural and stormwater runoff <br /> LTC Levelogger • Chloride tracer tests <br /> =, <br /> w,Z.. w; _7 . as w-. ,• r�;dr+rP..,.��_ i v........,... _..:...,.°t.. ,. .. "�'q"....,... . ` ..r <br /> High Quality GrouiidwaterMaaitoringbistruuientatioii <br />