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     Ultrasonic Area-Velocity Flow Meter AVFM-II


    Flow velocity and water level can be measured simultaneously by one sensor! It can be used only by fixing the sensor to the bottom of a water channel. Large-scale constructions such as weir and pipe establishment are not needed.
    • Flow velocity and water level are consecutively measured by one sensor.
    • No weir or flume is needed.
    • It is easy to set the sensor using a fixing screw and mounting bracket.
    • All necessary settings are to enter the pipe diameter and water channel width. There is no difficult setting.
    • Even a high-speed flow of up to 6 m/sec can be measured.



          ►Operating Principles
    A flow velocity (Doppler method) and water level (time flight) are consecutively measured through the ultrasonic wave transmitted from the sensor. The flow rate is calculated by setting the pipe diameter and water channel width.  
    measurement image



          ►Standard Specification
    Power Source   100~130VAC 50/60Hz(Max6.2W)
      200V~250VAC 50/60Hz(Max6.2W)
    Output   DC4~20mA(Allowable load resistance 1000Ω)x3
      (Flow,Level & Velocity)
    Output Contact   SPDT x 2
    Contact Capacity   250VAC 5A
    Display   4 digit LCD(upper) 16 digit LCD(lower)
    Allowable Temperature   -20~+60℃(no freezing,no condensation)
    Enclosure Rating   IP-66 NEMA4X
    Sensor material   PVC/Epoxy resin
    Allowable Temperature   -15~+65℃
    Accuracy   Level/±0.25% of range
      Velocity/±2% of readings
    Measuring range   Velocity/Min 0.03m/sec
            Max 6m/sec
      Level/Min 25.4mm
            Max 4.57m
    Cable material   Polyurethane
    Cable length   About 7.6m



          ►Product Lineup 
    • AVFM-Ⅱ
      Standard type

      Portable Type