(a) New meters installed by the Division of Water shall meet the following accuracy specifications:
Positive Displacement Meters
Size | Rate of Flow GPM | Accuracy Limits | Rate of Flow GPM | Accuracy Limits | Rate of Flow GPM | Accuracy Limits |
5/8" | 1 - 20 | 99 - 101 | 1/4 | 95% or better | 1/8 | 90% or better |
3/4" | 2 - 34 | 99 - 101 | 1/4 | 95% or better | ||
1" | 3 - 53 | 99 - 101 | 3/4 | 95% or better |
Compound Meters
Size | Rate of Flow GPM | Accuracy Limits | Rate of Flow GPM | Accuracy Limits |
2" | 2 - 160 | 98 - 102 | 1/2 | 95% or better |
3" | 4 - 315 | 98 - 102 | 1 | 95% or better |
4" | 6 - 500 | 98 - 102 | 1 1/2 | 95% or better |
6" | 10 - 1000 | 98 - 102 | 3 | 95% or better |
8" | 16 - 1600 | 98 - 102 | 4 | 95% or better |
10" | 32 - 2300 | 98 - 102 | 8 | 95% or better |
At the cross-over point, accuracy of 96% to 104% is required.
(b) The accuracy of repaired meters shall be as follows:
Positive Displacement Meters
Size | Rate of Flow GPM | Accuracy Limits | Rate of Flow GPM | Accuracy Limits |
5/8" | 1 - 20 | 98 - 102 | 1/4 | 90% or better |
3/4" | 2 - 34 | 98- 102 | 1/4 | 90% or better |
1" | 3 - 53 | 98 - 102 | 3/4 | 90% or better |
Compound Meters
Size | Rate of Flow GPM | Accuracy Limits | Rate of Flow GPM | Accuracy Limits |
2" | 2 - 160 | 97 - 103 | 1/2 | 90% or better |
3" | 4 - 315 | 97 - 103 | 1 | 90% or better |
4" | 6 - 500 | 97 - 103 | 1 1/2 | 90% or better |
6" | 10 - 1000 | 97 - 103 | 3 | 90% or better |
8" | 16 - 1600 | 97 - 103 | 4 | 90% or better |
10" | 32 - 2300 | 97 - 103 | 8 | 90% or better |
(Ord. 167-96. Passed 9-16-96.)