- SU ultrasonic flow meters
- 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 |
|---|

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

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