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Ultrasonic flow sensor IUF

with 2 ultrasonic measuring paths for combination with calculators for measurement of thermal energy (heating or cooling) Nominal flow qp 15 to qp 600 m³/h Nominal diameter DN 50 to DN 300

The flow sensors IUF serves to record the heat carrier volume (water) in closed circulation systems of heating or cooling plants. The scope of application reaches from measuring points in buildings to district heating or cooling networks.

The recorded volume can be output either in the form of conventional volume pulses or via an optional data interface (type VMCP / Volume Meter Cycle Protocol). Particularly noteworthy is the compatibility with the short case lengths of Woltman WP flow sensors, so that these mechanical devices can now be easily replaced by ultrasonic technology without the need for expensive reconstruction of the respective measuring point.

To complete a measuring point for thermal energy, a calculator and a pair of temperature sensors are required.

Product images

Flow sensor IUF
Flow sensor IUFFlow sensor IUF


Ultrasonic flow sensor IUF

Performance characteristics in overview

  • High-quality and durable housing, up to nominal size DN 100 made of stainless steel
  • 2 ultrasonic measuring paths for precise flow measurement
  • MID type examination certificat DE-19-MI004-PTB031 in the metrological class 2
  • Supplementary German type examination certificat DE-20-M-PTB-0012 for cooling applications
  • No straight inlet or outlet sections required
  • Any installation position (even “head down”)
  • Optional data interface for transmission of volume, flow rate, flow direction and device status
  • Continuous nominal diameters from DN 50 to 300, including DN 125
  • Ideal for calibration replacement of Woltman flow sensors of type WP and WS due to compatible overall lengths
  • Can be combined with the ZENNER multidata WR3 or other standard energy calculators
  • Optional possibility of integrating a temperature sensor or pressure sensor with threaded connection ½”


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