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Sensus PolluFlow® Ultrasonic Thermal Energy Metering System

The Sensus PolluFlow® Thermal Energy Metering System uses state-of-the-art ultrasonic measurement technology to provide a superior energy system that can be used for Heat, Cooling or Combined heat/cooling applications.

Ultrasonic technology offers many benefits: no moving parts, low pressure loss, wide flow measurement range, large flow range and less sensitive to suspended particles within the fluid.

Benefits to you:

  • Ultrasonic principle – no moving parts in the flow sensor
  • Certified MID MI004 Class2 – Ideal for RHI Monitoring
  • Heating, Cooling & Combined Energy Applications in one calculator
  • Auto-switching between heating & cooling applications
  • 4-Wire PT500 Temperature probes – enables probes to be extended / shortened onsite with no effect on accuracy or certification
  • Communications Options include Pulse, mbus, Wireless mbus, Modbus, LONworks or USB
  • Mains or Battery Powered
  • Integrated Datalogger


  • Available sizes from qp 0.6 to qp 60 (DN15 to DN100)
  • Horizontal, vertical and inclined installations available in all sizes
  • Exceptional long term stability - approved by AGFW duration test on the PolluFlow flow sensor


  • Approved in accordance with EN 1434 and MID MI004 in Class 2 with dynamic range 1:100 (qi:qp)
  • Material for flow sensor brass (qp 6 … 10 m³/h), grey cast iron (qp  15 … 60 m³/h)
  • Temperature range from 5-130 °C (briefly: 150 °C)
  • Installation in any position possible
  • Protection IP54 for heating, IP65 for cooling