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a <br />Y <br />tab FLOW MEASUREMENT FLOW MEASUREMENT ta7 <br />DEI'BZt1QNING FLOR BY FILLING <br />NE6SURED CONTAI17ER9 <br />.:.:;, <br />.y <br />e <br />.e <br />Y <br />m~e <br />1. L <br />7 0 <br />e s. ,i <br />e ~ o <br />s <br />o a <br />Y <br />a e a <br />b~~ <br />p y. <br />e 6 0 <br />r ~ar _ <br />a {.~ <br />O .e1 .1 ~ <br />a $ <br />9 ~ ~, e <br />~yy <br />a i a '~ <br />O .oi y <br />e <br />0 <br />-'"+'~ e ° <br />~.~~ <br />1 Y ~ <br />~6s <br />a ++ <br />e ea w <br />-I O <br />C N y <br />ti .. 7 e <br />4 G~ e 4 <br />o y H <br />y ~ o ~nn <br />~ `p 4 ~O <br />H 4 ~ ~ <br />e <br />Y S ~ <br />II <br />V <br />.. <br />0 <br />o~ <br />4 <br />e <br />~~ <br />cad <br />e <br />e <br />0 <br />4 <br />0 <br />O <br />a <br />~y <br />~~ <br />~ o <br />0 0 <br />a t <br />eS f <br />d O i <br />.-1 r{a ~ <br />P <br />.~+ a t <br />~N <br />e <br />a - <br />°g g° <br />e .~+ <br />v m o <br />a° <br />afl <br />°o <br />W <br />~~P <br />~=I.9 <br />e <br />a <br />0 <br />Y <br />boo ~l <br />t o ~ <br />z <br />11 Iyyl <br />O <br />J <br />M <br />e <br />e <br />y <br />O <br />X <br /> <br />e <br />ye <br />a <br />V <br />0 <br />~ w <br />c ~ <br />L7 <br />wg <br />y <br />e <br />~ R <br />a <br />k <br />e e <br />i <br />O <br />i O <br />x <br /> <br />yU <br />tl <br />d <br />1dF,AS1IRINC WATER LE9EL5 <br />O <br />mo <br />:- Thera are a number of ways to meneur• the depth to <br />.sr is wells. Three of the most ooamoaly used methods ar• <br />ieribed hers. <br />(1) Air LLae~ One of the beet methods <br />the air line whioh one be installed <br />rily and permneatly. The •irliae is <br />ally 1~H- or 1~4-iaoh oopper tubing or <br />Lwaised pipe, long enough to ertsad <br />low the lowest water level to bs msae- <br />id. The sir line may bs fastened to <br />~ pump bowls or oylSader and installed <br />.h the pump. The pipe must bs airtight <br />oars should bs taken is making up -11 <br />eta. Ths vartieal length of the air <br />ia.(A) 1Tom the pressure gauge to the <br />tom of the line should be measured <br />elLlly at the time of installaticm. <br />:Y <br />A pressure gauge la attaohsd to the <br />line at the surtaoe with an ordinary <br />~ valve to permit atteolting a Lire <br />p or sir oompressor hose. <br />' To measure the depth to caster at nay time, pump air into <br />~;~ •' t}a air line until the maximum reading oa the gauge is ob- <br />~Sasd. Thin reeding is equal to the preesur• exerted by the <br />eolu® of later (B) etsndiag outside of the air line. It Se <br />o_ustomaty to ues as altitude pressure gauge reading dirsot7.,y <br />~~ feet of water. If the gauge reads in pouada per aqusr• <br />h, multiply by 2.31 to ooawrt to feet (or uas the oonver- <br />,, <br />' aion table da Chapter I). <br />i The gauge reeding is feet (whioh equals the height B) Se <br />~~~': -then subtraoted from the total vertiosl length of air line <br />(l) to obtain the depth to water (C) in feet below the osater <br />-.i;, . of the gauge. <br />~. <br />Bosmplet !that is the depth to water if the air line is <br />126 test long and the maximm gauge reeding Sa 60 fast (or <br />21.6 lbs. per eq. Sa.)7 <br />- ~ !newer. Depth to water = 126 - SO = 7b it, below gsugs. <br />