The EMV-500 is a water/wastewater electromagnetic velocity open channel flowmeter sensor which is available in two sizes:

  • SIZE A is suited for pipes or channels from 150 mm to 500 mm diameter
  • SIZE B is suited for pipes or channels from 500 mm to 2.000 mm diameter.


The sensor is encapsulated in an IP68 submersible ultra high molecular polyethylene body to be mounted with a special sensor mounting band in the pipe.

When combined with the appropriate level sensor, the EMV-500 constitutes an efficient electromagnetic area/velocity flowmeter measuring both velocity and level in the same cross-section (or slice of pipe). This is a requirement necessary for accurate flow rate measurement using the continuity equation: Q = v x A

In addition, electromagnetic sensors are totally unaffected by the concentration of debris or dilution of wastewater by rain.

Key Features:

  • Accurate flow measurements
  • Grease tolerant : Grease shedding electrodes allow for reliable data collection even in these difficult environments
  • Field replaceable/interchangeable
  • Ideal for a variety of open channel sizes & shapes: Wastewater sewers (round, rectangular and odd shaped), storm sewers, creeks, rivers and streams


  • Drinking water supplies
  • Water treatment plants
  • Cooling water control and monitoring
  • Chemical and pharmaceutical plants
  • Flow measurements in industry
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