. Electric railway review . e three branches. Branches to and from \s a rule meters in power plants are only used for test-ing purposes. Meters should be installed in by-pass^s and if September. 190(;. ELECTRIC RAILWAY REVIEW 563 a separate meter is usorl tor eacli Ijoiler the most direct connection through the meter should be used, as the meter itselfoffers obstruction to the flow of water. This arrangement Is,however, open to the objection that the meter by-pass is inuse the greater part of the time, and any added friction wouldtend to become a regular operating loss. When some of th
. Electric railway review . e three branches. Branches to and from \s a rule meters in power plants are only used for test-ing purposes. Meters should be installed in by-pass^s and if September. 190(;. ELECTRIC RAILWAY REVIEW 563 a separate meter is usorl tor eacli Ijoiler the most direct connection through the meter should be used, as the meter itselfoffers obstruction to the flow of water. This arrangement Is,however, open to the objection that the meter by-pass is inuse the greater part of the time, and any added friction wouldtend to become a regular operating loss. When some of theboilers in service are operated with meters and the othersare not, it would then be necessary in order to control thefeed, to close the feed-regulating valve almost tight upon itsseat and hold back the feed, which service is severe upon theregulating valve. Instead of placing a separate meter on eachboiler branch, one meter fitted with a by-pass, flanges, etc.,can be used on all the boilers, all lioiler branches having ex-. Figure 209-(D9-2). actly similar straight sections flanged at each end so thatthey can be removed and replaced by the meter. Figure 208- (D9-1) ■ shows a meter arranged in the man-ner just described and also the removable straight hangers which support the ends of the pipe when theremovable section is out are shown and also other hangerswhich support the meter and enable a ready connection ofthe flanges. The section can be removed and the meter in-stalled while the boiler is in operation as the connection re-quires but a few minutes to make. An advantage in usingthe same meter for the different boilers is that the readingswill be relatively the same and an exact comparison of theperformance of the different boilers can be had. With dif-ferent meters on the different boilers one may read in ex-•cess of the exact quantity, since all mechanically registeringmeters are inaccurate to a greater or less extent. Another method of measuring the water
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
