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Installation & Operation Manual
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.
If a meter must be installed downstream of a chemical injection connection, the distance between the meter and the
injection point should be between 50 and 100 feet (15 and 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 different conductivities for each liquid. This will likely result in inaccurate measurements. The injection method –
spaced bursts, continuous stream of drips or liquid or gas – can also affect downstream readings by the meter.
Sometimes, due to circumstances, it’s difficult to specify the exact downstream placement distances. Contact Badger Meter
Technical Support to review your application if necessary.
Partially-Filled Pipe Situations
In some locations, the process pipe may be momentarily only partially filled. Examples include: lack of back pressure,
insufficient line pressure, gravity flow applications, etc.
To eliminate these situations, do not install the meter at the highest point of the pipeline.
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