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Chemical Injection Applications
For water line applications with a chemical injection point, install the meter upstream of the injection point . This eliminates
any meter performance issues .
Forward Flow
Flow Meter
Upstream
Downstream
Chemical
Injection
Here
Figure 10: Chemical injection point downstream of meter
If a meter must be installed downstream of a chemical injection connection, the distance between the flange and the
injection point should be 50…100 feet (15…30 meters) . The distance must be long enough to allow the water/chemical
solution to reach the meter in a complete, homogeneous mixture . If the injection point is too close, the meter senses the
two conductivities for each liquid . This likely results in inaccurate measurements . The injection method—spaced bursts,
continuous stream of drips or liquid or gas—can also affect downstream readings by the meter .
Forward Flow
Flow Meter
Upstream
Downstream
Chemical
Injection
Here
50 . . . 100 ft
Figure 11: Chemical injection point upstream of meter
Sometimes, due to circumstances, it is difficult to specify the exact downstream placement distances . Contact Badger Meter
Technical Support to review your application, if necessary .
Meter Location, Orientation and Applications
Page 13
March 2022
MAG-UM-01272-EN-21