E-Series Ultrasonic Plus

The E-Series® Ultrasonic Plus meter uses solid-state ultrasonic transit time technology to measure cold potable water and incorporates an integrated valve into the lay length of the meter. The integrated valve allows remote flow restriction of water service in residential utility applications.

Authorized utility personnel can actuate the valve via a command sent from BEACON® AMA (Advance Metering Analytics) to an ORION® Cellular LTE-M endpoint connected to the meter.

BEACON AMA displays the status of the valve (open, partial or closed) and upon a command to transition the valve, confirms the success of that actuation. Status of the valve is also indicated on the physical meter via a position-indicating LED.

E-Series® Ultrasonic Plus meters comply with the lead-free provisions of the Safe Drinking Water Act, are certified to NSF/ANSI Standards 61 and 372, and carry the NSF 61 marking. All components of the meter comprise the certified system. E-Series Ultrasonic Plus meters comply with the applicable portions of the most recent revision of AWWA Standard C715.

All electronic components utilized in the meter and RF Transceiver design comply with applicable FCC Part 15 standards and AWWA C707 for encoded remote reading systems


Applications: The E-Series Ultrasonic Plus meter provides a cost-effective, non-confrontational, safe method for water utilities to temporarily restrict an end consumer’s water service. The most common application is for authorized utility personnel to close or inhibit water service to repeat delinquent accounts to encourage prompt payment from the property owner. Other applications may include opening or closing the valve as tenants change, or accommodating end-customer requests for temporary water restriction.

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 shows total volume, rate of flow and alarm conditions.

A battery-powered DC motor module drives the dry-side magnetic coupling that is completely separated from the pressure vessel. The dry-side magnet couples to a mating wet-side magnetic assembly consisting of a magnetic disc, power screw and gate. The combined dry-side and wet-side magnetic coupling transfers torque from the motor to turn the power screw inside the pressure vessel, which ultimately drives the gate into the open, closed* or partially closed positions based on a command prompted by the connected ORION Cellular LTE-M endpoint via BEACON AMA. If necessary, actuation of the valve can be also be performed at the meter site. System screens within BEACON AMA indicate the position of the valve and record the date and time for all valve actuations. In addition, the position of the valve can also be determined by physical inspection of the meter via the valve position LED.

In the normal temperature range of 45…122° F (7…50° C), the Ultrasonic “new meter“ consumption measurement is accurate to:

    • ±1.5% over the normal flow range
    • ±3.0% from the extended low flow range to the minimum flow value

Construction: The E-Series Ultrasonic Plus meter features lead-free bronze alloy meter housing, ultrasonic transducers, a meter-control circuit board with associated wiring, LCD, and battery. Electronic components are housed and fully potted within a molded, engineered polymer enclosure, which is attached to the meter housing. The transducers extend through the housing and are sealed by O-rings, enabling turbulence-free water flow through the tube. The open flow tube design prevents obstruction of flow to reduce pressure loss and provide long-term accuracy.

The gate valve incorporated into the outlet side of the meter is designed to be field serviceable. The internal valve components (magnetic power screw assembly, gate) are accessible by removal of the potted motor, battery, PCB and valve bonnet.

Meter Installation: The E-Series Ultrasonic Plus 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 (flow sensors are not fully submerged) condition is experienced.

Additional information

Normal Test Flow Limits

5/8 in. x 3/4 in. (15 mm): 0.1…25 gpm
3/4 in. (20 mm): 0.1…32 gpm

Minimum Test Flow Limits

5/8 in. x 3/4 in. (15 mm): 0.05 gpm
3/4 in. (20 mm): 0.05 gpm

Safe Maximum Operating Condition (SMOC)

5/8 in. x 3/4 in. (15 mm): 25 gpm
3/4 in. (20 mm): 32 gpm

Typical Pressure Loss

5/8 in. x 3/4 in. (15 mm): 4.0 psi at 15 gpm
3/4 in. (20 mm): 2.8 psi at 15 gpm

Operating Performance

In the normal temperature range of 45…122° F (7…50° C), new meter consumption
measurement is accurate to:
• ±1.5% over the normal flow range
• ±3.0% from the extended low flow range to the minimum flow value

Storage Temperature

– 40…140° F (– 40…60° C)

Maximum Ambient Storage (Storage for One Hour)

150° F (66° C)

Measured-Fluid Temperature Range

34…140° F (1…60° C)


0…100% condensing; meter is capable of operating in fully submerged environments

Maximum Operating Pressure of Pressure Sensor

175 psi (12 bar)

Pressure Sensor Accuracy

±2% of full scale pressure, up to 150 psi (10 bar)

Register Display

• Consumption (up to nine digits)
• Rate of flow
• Alarms
• Unit of measure factory programmed for gallons, cubic feet and cubic meters

Totalization Display Resolution

• Gallons: 0.XX
• Cubic feet: 0.XXX
• Cubic meters: 0.XXXX

Meter Battery

3.6-volt lithium thionyl chloride battery is fully encapsulated within the register housing and
is not replaceable; 20-year battery life.

Valve Battery

3.6-volt lithium thionyl chloride battery within the power module. Battery is replaceable by
replacing the entire power module; 20-year battery life, based upon 480 actuations.

Meter Housing

Lead-free bronze alloy

Register Housing

Engineered polymer


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