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�.J <br />r] <br />meter to sound. This point is usually clearly V*M*ble on the prob,-_ If it is not visible <br />it should <br />located bydipping the probe into a water container whete the contact can be cluWy seer4 <br />marked.The total#* of water levelmeterE # • �a#1#t with the <br />length of <br />measuring tape. In addition, the individual marks on the cable should conespond with t e <br />correct footage- If the cable does not match the m"=wg tape then the difie=ce, (If consistent)1 <br />s s a + calculated, Percentage, l foot cable <br />measurements'With the cable } # € f! # Ix multiplied 0-9s <br />individualfootage zrr. s: # correctly not # consistent #their <br />♦ s adeviation, <br />hStrument should be t s <br />If tb?-- water level indicuor is constrmted of a caMe then ca�hibration will be pedormed once per <br />year # discrcpancy,# # ss# factor - be marked dfitctlya ##.' fimtrument <br />Water <br />indilatorss: # of .i more s to stretching <br />a+ s should -s' w; l.. ' t <br />Cah-bration dam % tia -e bhuler <br />az di&oTice f*r <br />rcrt:rence:. The most receat cahibradan results wiff also be rworded in the ttebnicigm fi dd .notes„ <br />Them is no specifit tarm, for Water level M&4=*r Cahbra&CM <br />y <br />RRAJ <br />t' <br />l:,ar is subjoct to sigrificaat vwiationsdue to xempetat; buffaing eapofthe #. <br />histr=enta or this .w • # pH met=mustbe caliUated, # # s ' and ♦ ' .y sampling # r caa. <br />day and 4. t least, once more - duriag the day.To r, t pH meter die # :t E#t .as reading <br />Standard solutions .€. mixed a. e.+.:t ►U.tt a x to package}:. '£# t.+s! # f for .s,'. <br />Sbndardsolutionsor powders -for H <: =d 0 are +#aial## -.+ F available- These. # R a <br />-am purchased :# «w and- discarded i .t ! lf has a#! # +st Sbdflives .! depending # # the <br />brand of standards x,.x If pe-prcpared solution is used, the tet! ;s!# d9ftOf the ♦ i!} will <br />be noted on the cah"Nation, tog. <br />`. apt#x++ ,:: # i►': #i *t# # # ! !,:'i+d # ! # ' <br />}#..,+► a 0 #1, ! - <br />M <br />^F <br />} <br />4, 2000 <br />