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Water Flow Monitor (WFM)

WFMWFM 608 Water Flow Monitor

Automation and Electronics' WFM Water Flow Monitor is designed to monitor water flow accumulation, water pressure, gas pressure, and the solar power battery voltage level (if required).

The unit was developed for water flow monitoring for field operations. It is fully configurable by the operator using an optional local interface, Personal Digital Assistant, or portable computer. The unit is supplied with typical parameters ready for specific application tuning. Setup parameters may also be downloaded from a host computer. Software lockout with notification provided by host and local interface.



  • Flow accumulation
  • Pressure and flow data logging
  • Direct turbine meter input
  • Wedge Meter® or Coin Meter® Flow Measurement
  • Solar power ready
  • LEDs for easy status indication


  • DUKS local operator interface
  • RTU Link: Hand held with rugged serial port and interface software
  • RPM 102 VAC power supply module
  • 10 A-H/day solar power supply
  • Communications: Wire line to wireless Ethernet


The Water Flow Monitor application program is divided into the following modules:

  • Elapsed time counter module
  • LCD and key pad user interface module
  • Time of day module
  • Gauge off time module
  • Analog sleep mode relay module
  • Field input scaling and alarm handler module
  • Run time totalizer module
  • End element buffer module
  • Watchdog timer with recovery


Enclosure: 18" x 16" x 8" NEMA 4X white fiberglass enclosure
  Bailey controller hinge mounted replacement kits available
Operating temperature: -40 to 158 deg. F (-40 to 70 deg. C)
Relative humidity: 5 to 90% non-condensing
Power requirements
Typical: 12 VDC, 24 VDC, 110 VAC and custom power supplies available. For most Permian Basin area controllers with radios, we recommend a solar power supply, 65 Watt panel and 100 A-H battery with a charging regulator, load shed module (LSM) and RTU power distribution board (RPDB)
CPU / Memory
CPU: 8 MHz CMOS 65C816, 16 bit
Memory: 256 kB battery backed RAM, 256 kB EPROM
Digital inputs: Eight 1500 VDC optically isolated; 10 mA sense current single ended
Analog inputs: Four 4-20 mA or 1-5 VDC (user selectable) non-isolated A/Ds
Relay outputs: Two 7.5 A 30 VDC DPDT for valve actuator control and two 2 A 30 VDC DPDT
Turbine meter input: One 30 mV to 10 Vpp, 10 to 3 kHz
Pulse input: One optically isolated 0 to 2,500 Hz 12 V sink to ground @ 10 mA
Miscellaneous: Optional multi-variable input through RS-485 bus (MODBUS RTU)
Serial ports: Three: one RS-232 local operator interface port, one RS-232 communications port and one RS-232 / RS-485 port
Radios/Modems: 110 bps wire line modems, licensed frequency, spread spectrum and wireless Ethernet are supported to 19,200 baud

Wedge Meter is a registered Trademark of ABB.
Coin Meter is a registered trademark of Preso Meter Corp.