The City of Cedar Rapids, Iowa, Water Division treats and distributes groundwater from alluvial wells. (see Fig. 1). The Water Division has over 50,000 metered
accounts, including residential, commercial and industrial, and
serves a population base of around 128,000 people.
Plant operations and instrument technicians determined
in 2011 that they needed to replace under-performing fow
meters in two booster stations as well as in their water intake
system. Their existing fow meters were strap-on ultrasonic
transit-time meters and they were susceptible to electrical and
radio frequency interference from electrical equipment in the
station, such as the pumps’ variable frequency drives.
The City of Cedar Rapids water distribution system includes
two booster stations: The J Avenue NE Booster Station has
eight vertical turbine pumps; the Bowling Booster Station SW
operates with three horizontal split case centrifugal pumps.
Measuring fow in booster stations such as those found in the
City of Cedar Rapids is both important and diffcult. Accurate
for City of Cedar Rapids
BY NICK VOSS
Fig. 1. City of Cedar Rapids Water Treatment System.
Fig. 2. FPI-X Mag Flow Meter.