Ultrasonic meters
Badger Meter's E-Series Ultrasonic Meters deliver long-term, accurate meter reading for utilities. Designed specifically for water metering applications, the meters use ultrasonic transit time technology to calculate flow rate and total consumption. The E-Series is constructed with no moving parts, greatly improving accuracy and reliability by eliminating the mechanical wear that can reduce accuracy over the life of the meter.
Badger Meter
www.badgermeter.com/E-Series.aspx