A Practical Guide to Particle Counting for Drinking Water Treatment - Chapter 11 doc

... floppy disks are available in several proprietary formats, providing storage capacities up to a gigabyte or more. They are most useful for manual data backup and transport. Data can be accessed more ... device. They are most useful for small-scale distribution of large amounts of data. Some can only be recorded once, unlike magnetic disks, and are not as practical for day -to- day...

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... detected and 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 ... mentioned is Section A, the smallest particle that can be reliably measured must produce a signal amplitude at least twice that of the noise, or a 2 to 1 signa...

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... counting was boosted further when Georgia began strongly encouraging many of its plants to install particle counters. Plants in Cali- fornia and a few other states also began to investigate particle ... Royco was still a major supplier of particle counters, and a second firm named Met One was also situated to provide particle counters for water treatment application...

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... optomux protocol. While the standard optomux protocol is supported by many SCADA packages, not all of the commands are included. The standard optomux protocol provides for minimums, maximums, and ... of four-conductor cabling. B. PROTOCOLS Each of the available units communicates data by way of a unique protocol. When a standard turnkey system is installed, the protocol is not impo...

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... 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 combination of the main alarm display and ... real-time data in the same package, as each display can be configured in one of the three modes. Several other options are available, such as manual or automatic scaling for the data (vert...

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... 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 © 2001 by CRC Press LLC 6 A PRACTICAL G...

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... Packaged Treatment Plants Packaged treatment plants, as touched on above, are prefabricated plants, which are more cost-effective than ground-up plants for smaller applications. A packaged plant ... removal. (Courtesy of Pacific Scientific Instruments, Grants Pass, OR.) 28 A PRACTICAL GUIDE TO PARTICLE COUNTING manufacturers of packaged treatment plants employ particle c...

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... at a time. If a spare is 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 ... practical. 2. Particle Counter Calibration Verification Verifying calibration is an easier and more practical step for the water plant operator. Only a couple of partic...

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... PRACTICAL GUIDE TO PARTICLE COUNTING The disadvantage to this approach is that the particle counter data are collected and displayed separately from the other plant data, requiring separate training ... second alternative is the direct interface of the particle counters to SCADA using serial data communications. All count data, as well as status and alarm information, are t...

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... case of online particle counting, trending the grab-sample data with other plant parameters will add to its value. If these data are available in a usable file format that can be imported into ... prior to each use. Certainly an acid washer and particle- free storage area would be ideal, but these are usually not necessary for 2- m particle counting. It is a good idea to k...

Ngày tải lên: 18/06/2014, 19:20