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  1. SU ultrasonic flow meters
  2. Get started with inline

SU inline ultrasonic flow meter: Get started

Key design advantages 

  • High-precision flow measurement for volumes up to 6,000 l/min.
  • Accurately measures ultra-pure water, even at low conductivity, thanks to advanced ultrasonic technology.
  • Continuous signal-strength monitoring provides a built-in indicator for measurement quality and predictive maintenance.
  • Maintenance-free stainless-steel measuring tube with no measuring elements, seals, or moving parts to wear out or fail.
  • No pressure loss, leaks, or blockages caused by the sensor design.
ZERO
moving parts in the pipe
  -20...100ºC
full accuracy range
  ±2% accuracy
out of the box for water
 

A better alternative to mechanical flow meters

 

Advantages of ifm's solid state sensor

  • No moving parts or flow obstructions inside the pipe
  • Non-contact sensing technology minimizes wear
  • Minimal pressure loss
  • Immune to shock and vibration-related measurement errors
  • Continuous sensor diagnostics help prevent unplanned downtime
  • Bi-directional flow measurement capability
  • Factory calibrated across the full range with no routine recalibration required
  • Programmable flow curves support multiple media types
  • 316L stainless steel measuring tube eliminates material compatibility concerns

 

Disadvantages of a mechanical sensor

  • Moving parts are required and subject to wear
  • Sensor elements are in direct contact with the process media
  • Mechanical elemetns can introduce significant pressure loss
  • Susceptible to failure or measurement drift from shock, vibration, or ingress
  • Limited or no integrated diagnostics for sensor health monitoring
  • Often support flow measurement in only one direction
  • Require periodic recalibration to maintain specified accuracy
  • Different sensor designs may be needed for different media types
  • Internal seals and gaskets require material compatibility verification
 

Designed for modern control systems

 

Flexible PLC implementation

 

IO-Link

  • Pure digital signal: Flow rate, totalizer, temperature, and sensor health all over one signal wire.
  • Smart diagnostics: Continuous health monitoring detects contamination and process changes early.

Analog (4...20 mA or 0...10V)

  • Configurable for flow rate or temperature

Frequency (1...10,000 Hz)

  • Configurable for volumetric flow quantity or temperature

Pulse

  • Output to monitor totalizer

Switching outputs

  • Two available for flow and temperature  set points