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14 <br />Table 81 1/2 Inch Meter Test Results <br />Master <br />Sensus <br />Total <br />AMI Feasibility Report I Client Name: City of Santa Ana <br />41 23 56% 543 <br />100% 313.--- <br />42 24 57% <br />4.3.1.5 2" meters <br />In general the 2 -inch meters appear in reasonable condition, although there does appear to be a <br />trend of low flow degradation. There were a number of meter tests which did not have the reading <br />recorded, which makes analysis difficult, however it is suspected that these follow the same <br />declining trend of low flow once the volume of 15,000 units is reached. If this assumption is correct, <br />then all meters that have reached 15,000 units should be replaced. Master meters need to be <br />replaced. Sensus meters will have to be reviewed as it will be difficult to test each meter and find <br />which ones need to be replaced. <br />Table 9 2 Inch Meter Test Results <br />so®® <br />Master 18 8 44% 387 <br />Sensus 32 _..5 16% _. 408 <br />Total 50 13 26% <br />The meter testing analysis indicates that not all meters need to be changed out, some groups are <br />performing relatively better than others. For example; <br />1. All the Rockwell meters of all sizes up to 2 -inch appear to be close to or past their useful <br />lives and need to be replaced. (3100) <br />2. All of the 1 -inch Rockwell meters should be changed out (all in this testing sequence were <br />Rockwell meters except one Neptune meter, so if there are additional manufacturers it may <br />be worth testing some of these also). <br />3. All of the 1.5 -inch meters should be changed out <br />25G-132 <br />