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LI <br />11 <br />meter to soun(L This point is uvWly clearly visible on the probe- 1f it is not visible it should <br />located by dipping the probe into a water container wh= the contact can be cload then <br />marked. The total length of the water level meter should comspond with the length of the <br />measuring tape. Inaddition,theirAividualon the 4mbleshouldcorrespond with the <br />Correct footagft- If the cable does not match the measuring tape then the diftermce (if consLV <br />w# <br />should be calculaWas apercentage,i foot <br />measurezuents v4th the cable # be multiplied t `r 0.98 to couict forthe <br />r <br />individual • * t.! are notplaced i *tam not#! <br />deviadoj4 <br />initrurnent should be # r; ,r <br />If the water level indicwor is constructed of a cable then calibration will p 0 once <br />be erf rmed per <br />year. is discrepancy, the % 1.. f faaor willbe nmrked dimcdyon thejusmnnent <br />Water level indkators consuu6ted of tape are mom subjW to svetching and should be. calibrated <br />"'b`tin data fbT each instrmnent will bc-mcorded And kePtia-a .b` , at the: office. for~ e<•: - . <br />rtfircnce. 71X most recent =hlw2don resUlts be lecOrded in the technicians field nates, <br />is no SPCCifiCf for water )cvet indicator "mL <br />RH meter <br />pH _wbject tosignificantvmiationsdue to #! 3 # #• y ## 'capacjW ;# Ye 3 !. <br />t# t ##. w# t For tt Mason PHmet=jnustbe-cafth2tedWere,•• <br />cr_vj3;pjing on =h_ <br />day Y t:.at leastonce momt t [. r # day. To calibraft apH ## <br />4usted to read coar.Wy for solutions with a standard pl-L <br />Standard solutions are t1 # r! ftesk. 1k t : # ! g 'Y !2 • F # .Yt; # for eachsamplingtv=t <br />Standard soludow # # ! ` t :. i !7. and # #�#Yi Yt4:+xially available,: These , mudM :.-#:.: <br />purchased ! a. ! .: ♦ # discarded «t sbefflifhas -4Y arY # tiv= ray 4;p=dingon the <br />brand istandards used. If pro-prVared! i# is usedthtogiration due of &c w1ution vill <br />be #W ## the i ; fit# log. <br />AlthouSh different brands of pH m °oo similar for all of di <br />A gencial6icalibration procedujfollows: <br />L Turn on edit; theck theba=y, and allow to warm up if necessU7.. <br />234V&49-FOIWjOjU2s A-2 J* 14,2W <br />CWOW 2M 4 <br />br- <br />C] <br />