Remote units that constantly records data
Another type of leak logger is permanent or semi-permanent. These loggers can be installed in quantities of a few or even thousands in valve boxes and left for a week or two survey and monitor an area, or on a permanent basis throughout the distribution system. When permanently installed, and read with a drive-by system, they are proactively monitoring for new leaks 365 days a year. They can catch leaks when they start small, reducing the total water lost before being detected and repaired. Since many leaks start small and grow over time, they can often leak for weeks or months before actually being detected visually. Since smaller leaks are cheaper the utility can save on lost water, repair parts, and the labor required for large repairs and property and road restoration.