ZoneScan 820 Testimonials

EBMUD, USA

Extract from a Januar 2012 Newsletter:

"In the Berkeley project, 850 Gutermann loggers were magnetically attached to strategically selected pipeline appurtenances covering nearly all pipes within the City of Berkeley. Each logger sampled pipeline noise levels at five second intervals for a total of 2,400 samples daily. The loggers then assigned a leak index number to each location based on the distribution of the noise levels. EBMUD staff periodically downloaded the logger data over an 18-month study period then used correlators to pinpoint the location of any potential leaks identified by the loggers. The study of over 200 leaks during this period produced a wealth of information on the nature of leaks and provided valuable feedback on the effectiveness of using logger technology in water loss control.

Dave Wallenstein
East Bay Municipal Utility District, EBMUD"