Field Application of ZCorr Loggers
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Problem:

The downtown area of Sausalito, California is very busy with foot traffic, automobiles, restaurants, shops, and hotels from 6 AM until after midnight every day. Leak surveying and leak pinpointing for Marin Municipal Water District are almost impossible during these times.

Solution:

Use ZCorr Digital Correlating Loggers to do an “overnight survey and pinpointing” on the main valves and hydrant valves along Bridgeway Avenue to detect any leaks.

Result:

ZCorr found a small leak (cut in top of pipe?) that was totally unknown on Broadway close to Princess Street.

Photos:

Many Correlations!
One Leak
or Several?

One Logger
is Much Louder
than Others

Leak Area
is Between
Z4 and Z6

MMWD digs up the leak location

Small leak in top of the 6 inch cast iron main

MMWD’s repair crew tightening the repair clamp to stop the leak

Listening for leaks
with a steel rod.

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