Badger Meter ModMAG M Series - Chemical Injection Applications

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