E-Series® Meter
Cold Water Stainless Steel Ultrasonic Meter
Model E-25, E-35 and E-55 - NSF/ANSI Standard 61 Certified, Annex G
The electronic Badger Meter E-Series® meter utilizes ultrasonic
and solid-state technology in a compact, totally encapsulated,
weatherproof, and UV-resistant housing for residential and
commercial applications. Electronic metering provides information
and data not typically available through traditional, mechanical
meters and registers, such as rate of flow and reverse flow
indication, and eliminates measurement errors due to sand,
suspended particles and pressure fluctuations.
Offered in four sizes and lay lengths, the E-Series meter features:
•t Minimum extended low-flow rate lower than typical positive
displacement meters.
•t Simplified one-piece electronic meter and register that are
integral to the meter body and virtually maintenance free.
•t Sealed, non-removable, tamper-protected meter and register.
•t Easy-to-read 9-digit LCD display – presents consumption, rate
of flow, reverse-flow indication, and alarms.
•t Digital or industry standard encoder protocol.
The E-Series Meter is available with a wired lead, 308 in-line
connector or fully prewired to ORION® and GALAXY® AMR/AMI
endpoints. It is also offered with the Itron® in-line connector,
in-line connector with pit endpoint, or prewired to an Itron
remote endpoint.
Applications
Use the E-Series meter for measuring potable cold water in
residential, commercial and industrial services. The meter is also
ideal for non-potable, reclaimed irrigation water applications or
less than optimum water conditions where small particles exist.
The E-Series meter complies with applicable portions of ANSI/
AWWA Standard C700 and NSF/ANSI Standard 61, Annex G. There is
currently no AWWA standard that specifically addresses ultrasonic
meters for residential applications.
Operation & Performance
As water flows into the measuring tube, ultrasonic signals are sent
consecutively in forward and reverse directions of flow. Velocity
is then determined by measuring the time difference between
the measurement in the forward and reverse directions. Total
volume is calculated from the measured flow velocity using water
temperature and pipe diameter. The LCD display shows total
volume and alarm conditions and can toggle to display rate of flow.
ESM-T-01-EN (2-12)
In the normal temperature range, the E-Series “new meter”
consumption measurement is accurate to:
•t ±1.5% over the normal flow range
•t ±3.0% from the extended low flow range to the minimum
flow value
Construction
E-Series meters feature a stainless steel, lead-free meter housing,
an engineered plastic and stainless steel metering insert, a metercontrol circuit board with associated wiring, LCD, and battery.
Wetted elements are limited to the pressure vessel, plastic/
stainless steel metering insert and the transducers. The electronic
components are housed and fully potted within a molded,
engineered plastic enclosure, which is permanently attached to the
meter housing. The transducers extend through the stainless steel
housing and are sealed by O-rings.
The metering insert holds the stainless steel ultrasonic reflectors
in the center of the flow area, enabling turbulence-free water flow
through the tube and around the ultrasonic signal reflectors. The
metering insert’s patented design virtually eliminates chemical
buildup on the reflectors, ensuring long-term metering accuracy.
Meter Installation
The meter is completely submersible and can be installed using
horizontal or vertical piping, with flow in the up direction. The
meter will not measure flow when an “empty pipe” condition is
experienced. An empty pipe is defined as a condition when the
flow sensors are not fully submerged.
Technical Brief