Single Use Solutions - for Pharmaceutical and Biotech professionals


Non-invasive, Ultrasonic High Precision Clamp-On Flow Sensors for Flexible Tubing

The LEVIFLOW® clamp-on flowmeters are designed for non-invasive flow measurements of high purity fluids with flexible tubing. 

Two piezoelectric transducers, mounted in the sensor housing, generate and receive an ultrasonic wave. The wave going in direction of the flow (with-stream wave) is accelerated and the wave going against the flow direction (against-stream wave) is slowed down. The two waves are processed by a signal converter. The difference of the transit time of both waves is proportional to the velocity of the fluid.


  • High purity liquid processes
  • Sterile non-invasive flow measurement in Pharmaceutical manufacturing
  • Biotech processes
  • Flow control in combination with Levitronix® MagLev pump systems
  • Single-use disposable applications

Clamp-on System Configuration

The standard configuration of the LEVIFLOW® clamp-on flowmeters consists of a flow sensor and a converter with a digital signal processor (DSP) for processing the sensor signals. Various signals (analog output, digital input and digital output) are provided and can be configured with a PC software. A RS485 bus allows arrays of multiple flowmeters. In addition, the sensor value is shown on a 4-digit display. For debugging, data collection and configuration with a PC the LEVIFLOW® Configuration Software is available at Levitronix® together with a USB to RS485 adaptor.


  • Flow range: 0–4 l/min[LFSC-08D]; 0–20 l/min[LFSC-12D], 0–80 l/min[LFSC-22D]
  • Maximum fluid pressure: 6.5bar[LFSC-08D]; 6.5 bar[LFSC-12D], 4 bar[LFSC-22D]
  • Accuracy of reading @ > 15% of FS: ±3 %
  • Accuracy of reading @ < 15% of FS: ±18 ml/min[LFSC-08D]; ±90 ml/min[LFSC-12D]; ±360 ml/min[LFSC-22D]
  • Fluid temperature: 10–60°C
  • Standard tube material: Saint Gobain C-Flex® (374, 072 and 082) and Silicone (Pharma 50, 65 and 80)
  • No contamination due to non-invasive flow measurement
  • No moving parts -> no particle generation
  • Low disposable cost (tubing cost only) with reusable sensor
  • Improved bubble robustness due to DSP technology
  • Flow control together with Levitronix® MagLev Pumps
  • Easy integration into OEM equipment
  • Easy configurable flow sensor parameters (PC software)
  • Low pressure loss
  • Integrated and configurable totalizer function


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