A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 20 docx
A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 20 docx
... display for the affected particle counter. The left-hand indicator is for commu-nication alarm, and the right-hand indicator denotes a data alarm. The combinationof the main alarm display and ... real-time data in the same package, as eachdisplay can be configured in one of the three modes. Several other options areavailable, such as manual or automatic scaling for the data (vertical) axis. ... operators to learn and work with. Other applications may require allthe advanced features available. We are not attempting to rate the packages described below, and particularcomments about...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 1 potx
... Data Broadwell, Mike A practical guide to particle counting for drinking water treatment/ Mike Broadwell.p. cm.Includes index.ISBN 1-5 667 0-3 0 6-9 (alk. paper)1. Particle counting (Water treatment ... D.C. A Practical Guide to Mike Broadwell for Particle Counting Drinking Water Treatment © 200 1 by CRC Press LLC 6 A PRACTICAL GUIDE TO PARTICLE COUNTING The second reason for preferring light-blocking ... 14 Chapter 2 Applications for Drinking Water Treatment A. Why Use Particle Counters for Drinking Water Treatment? 15B. Cryptosporidium and Giardia 16C. Particle Counters and ...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 2 potx
... Packaged Treatment PlantsPackaged treatment plants, as touched on above, are prefabricated plants, whichare more cost-effective than ground-up plants for smaller applications. A packagedplant ... removal. (Courtesy of Pacific Scientific Instruments, Grants Pass, OR.)28 A PRACTICAL GUIDE TO PARTICLE COUNTING manufacturers of packaged treatment plants employ particle counters as a standardpart ... brieflyat some of the potential applications for particle counters in wastewater treatment. Standard wastewater is too high in concentration for particle counters, but special-L1306/frame/pt01 Page...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 3 ppt
... in-house calibration will never be practical. 2. Particle Counter Calibration Verification Verifying calibration is an easier and more practical step for the water plantoperator. Only a couple ... at a time. If a spareis available it can be rotated into service. The maintenance log should be kept up- to- date, and calibration stickers displaying the date of calibration placed on each particle ... maintenance schedule should account for seasonal changes, and be adjustedaccordingly. Permanganate is often added seasonally, and can cause coating prob-lems. Any change in the process that can affect...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 4 pot
... PRACTICAL GUIDE TO PARTICLE COUNTING The disadvantage to this approach is that the particle counter data are collectedand displayed separately from the other plant data, requiring separate training ... second alternative is the direct interface of the particle counters to SCADAusing serial data communications. All count data, as well as status and alarminformation, are transmitted in a specially ... developing a useful and practical approach to particle counting that can be tailored to the capabilities and resourcesof the individual drinking water treatment plant. None of the information presentedhere...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 5 potx
... alters the approach to particle counterapplication. There are many ways in which grab samplers make particle counting more difficult to apply, and a few areas where they are advantageous. Again, ... case of online particle counting, trending the grab-sample datawith other plant parameters will add to its value. If these data are available in a usable file format that can be imported into ... the application.L1306/frame/pt01 Page 71 Friday, June 23, 200 0 1:46 PM© 200 1 by CRC Press LLC70 A PRACTICAL GUIDE TO PARTICLE COUNTING D. DATA HANDLING As touched on above, grab-sampler data...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 6 doc
... detectedand measured if it produces a signal with a minimum 2 to 1 signal -to- noise ratio. B. SIGNAL -TO- NOISE RATIO All electronic instruments are subject to various forms of “noise,” or random,meaningless ... Part III the actual manufacturer’s product offerings are presented. Thechapters for Parts II and III are designed to run in parallel, to allow for easy cross-reference. L1306/frame/pt02 Page ... the primary specifications employed for evaluating particle counter performance are defined and discussed. Understanding of these few speci-fication parameters is essential to making informed decisions...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 7 potx
... 82 A PRACTICAL GUIDE TO PARTICLE COUNTING The cell window materials vary in optical quality. Small imperfections in thematerial diffuse the light and are a source of resolution and sizing ... reflected back intothe laser, it can disrupt this process, and cause variations in the beam intensity. Thisis another reason that aluminum flow cells are anodized a dark color, as the shinymetallic ... piece.This softness accounts for the fact that it can be scratched from cleaning, or fromcontact with particles over a long time period. Different grades of sapphire areavailable. The entrance window...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 8 ppt
... called a voltage comparatorinput stage. The more complex approach involves analog -to- digital (A/ D) conversion. 1. Voltage Comparator A comparator is simply a small circuit that “compares” an ... typicallycommunicated every minute.The comparator provides a simple way to convert the particle size informationfrom an analog pulse to a digital count value. It is a very basic form of analog -to- digital ... 86 Friday, June 23, 200 0 1:54 PM© 200 1 by CRC Press LLC 88 A PRACTICAL GUIDE TO PARTICLE COUNTING for several seconds to allow time to sort and communicate the data. Data are typicallycommunicated...
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A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 9 ppt
... voltage range of a chart recorder or SCADA analoginput is 1 to 5 V. A 250 Ω resistor is required to convert a 4 to 20 mA signal into a 1 to 5 V signal.Another benefit of the 4 to 20 mA current ... loophave voltage inputs. According to Ohm’s law, voltage is equal to current timesresistance. All that is required to convert the 4 to 20 mA loop to a voltage is a smallresistor. In most cases, the ... some cases, flow alarms can be signaled by the particle counter via the computer data collection system. A. DIAGNOSTIC SIGNALS, ALARMS, AND DISPLAYS The most common alarm found on particle...
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