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V4 , c 2 Cit ZU l U �) IJ �`y ,4t 10 t--r <br /> ik <br /> HOW TO LOCATE THE POSITION OF THE <br /> 71 SO AT 95% TANK CAPACITY Measuring Stick <br /> The length of the upper tube and the placement of (the 71 SO valve body determine the shut-off point . <br /> Following the standard instructions for the OPW <br /> 71 SO will provide for initial shutoff at 95% . In all <br /> cases , the upper tube length must be a minimum of <br /> 6- 112" plus the length of the riser pipe . All length <br /> measurements are in inches . Riser Pipe <br /> with Face (A) <br /> INSTRUCTIONS Seal Adaptor To Tank <br /> � To IA . ) (S ) <br /> o , 055 1 . ) Find tank capacity (in gallons ) from tank I p ( To Tank <br /> calibration chart provided b tank manufacturer . Bottom <br /> p Y <br /> `tlBSty 2. ) Calculate 95% of capacity . I <br /> 6-1l2" <br /> 3. ) Locate the 95% volume number on the tank <br /> calibration chart. t . . <br /> kc I " 4 . ) Find the dipstick number (X ) which corresponds Figure 1 <br /> to the 95 % tank volume . And , find the dipstick <br /> Ab3 number (Y) which corresponds to the EXAMPLE <br /> 100% volume. 1 . ) For an Owens- Corning Model G-3 Fiberglass® <br /> Tank Calibration Chart : <br /> 13 5 . ) Subtract the dipstick number (X) from the tank Tank Capacity - 10 ,000 gal . , nominal 9 ,403 gal . <br /> diameter (Y ) to find the upper tube reference NOTE : Use actual capacity only <br /> number (Z) . <br /> (Y ) - (X) _ (Z) 2 . ) 95 % of actual tank capacity = 0 .95 x <br /> 9403 gal . = 8933 gal . <br /> t1 6 . ) Subtract 2" from (Z) to find the upper tube depth <br /> ( C ). 3 . ) The closest number which is less than 8933 gal. <br /> (Z) - 2 = C Is 8910 gal . Choosing the closest number less <br /> than 95 % of actual capacity ensures that the <br /> T,I,Ls,C less than 6 - 112" 7 initial shutoff will occur when the tank is no more <br /> than 95% full . <br /> NO Upper tube length is C plus the distance <br /> from the top of the Face Seal Adaptor 4 . ) The calibration chart reading of 8910 gal . <br /> installed on the riser pipe to the inside , top corresponds to a dipstick measurement of 82" . <br /> lip of the storage (A) . <br /> �C 5 . ) Dipstick number ( X) = 82" <br /> Upper Tube Length = C + (A ) Tank diameter (Y) = 92" <br /> (Y ) - (X) = (Z ) (92 "- 82" = 10") <br /> YES Upper tube length is 6- 112" plus the riser (Z) = 10" <br /> pipe measurement (A) . <br /> 7 . ) (Z) - 2" = C ( 10" - 2" = 8") <br /> Upper Tube Length = 6- 112" + (A) C = 8fl <br /> NOTE : You must find the actual tank capacity 76 ) Is 8" less than 6- 1l2"7 <br /> number that correlates to the 6-112" + (A) depth <br /> for the station records. This number may also NO Measure the distance from the top of the <br /> be used for the purposes of calibrating an FSA400 Face Seal Adaptor installed on the <br /> electronic tank level system . riser pipe to the inside , top lip of the storage <br /> tank and obtain measurement (A). <br /> O Registered T. M . - Owens Corning Fiberglass Corporation Upper tube length = C + (A) <br /> f <br /> i <br /> 64 <br /> I <br /> E <br />