Page 214 - Water Loss Control
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Contr olling Appar ent Losses—Customer Meter Inaccuracy 187
FIGURE 12.7 Water meter test bench for accuracy testing of water meters of size 3 in and larger.
On-site testing is usually necessary for meters of size 2 in and larger and is recom-
mended for all sizes of current (magnetic flowmeters) and compound type meters. Few
meter shops are equipped with sufficiently large tanks to handle the quantities of water
needed to test the larger meters. Furthermore, the accuracy of some current and com-
pound meters may be affected by the configuration of pipe and fittings directly ahead
of the meter, therefore it is appropriate to test these meters where they exist in service.
FIGURE 12.8 Water meter test bench for accuracy testing of water meters smaller than 3-in size.
