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.