PSG Biotech Support

From Laboratory to Commercial Scale

Find the information you need to help maintain your pumps.

View All Support

Four Piston Diaphragm Pumps Support (incl. Additions & Accessories)

View All

Ultrasonic Sensors Support

View All
Abaque Logo
All-Flo Logo
Almatec Logo
Blackmer Logo
Ebsray Logo
em-tec Logo
Griswold Logo
Hydro Systems Logo
Malema Logo
Mouvex Logo
Neptune Logo
Quattroflow Logo
Wilden Logo

Award-Winning BioProTT™ FlowSU System

The BioProTT™ FlowSU System – recently named a winner of the Processing magazine 2023 Breakthrough Product Award – is an innovative flow-measurement solution for single-use biopharmaceutical applications. Suitable for both upstream and downstream processes, the ultrasonic flow meter consists of a reusable transmitter and a disposable flow sensor for integration into single-use tubing assemblies.

The approach of “Ready. Connect. Flow.” is driven by the ease of integration, smart connection to a host system or pump, and reliable, highly accurate flow-measurement capabilities that feature no obstructions within the flow path while being low maintenance. Integrated air and bubble detection ability adds a further level of safety to biopharma-production processes.

Please note: Not all products are available and approved in every country. Please contact your local distributor if you have any questions.


In upstream processes such as buffer and media preparation or cell cultivation, the BioProTT™ FlowSU can provide feedback to a pump or dose feeding processes.

In downstream applications such as depth filtration, tangential flow filtration, in-line buffer formulation, or chromatography, the BioProTT™ FlowSU can be used to hygienically and precisely measure the flow. The flow meter can be easily integrated inline and be combined with different pump types such as the Quattroflow® Single Use Pumps. The integrated air and bubble detection adds safety to air-sensitive applications.

Key Facts

  • Pressure resistant up to 5.1 bar (74 psi)
  • Straight flow path and ultrasonic transit time principle for cell and media integrity
  • 2% accuracy without individual calibration due to standardization
  • On-site adjustment feature to improve performance on-site
  • Full compatibility of all five sensor sizes (1/4‘‘, 3/8‘‘, 1/2‘‘, 3/3‘‘, 1‘‘) with one multi-use transmitter: size is automatically recognized upon connection (replace the existing one)
  • Toolless attachment of single-use sensor with special locking technology
  • USP class VI material (polycarbonate) and gamma-stable up to 50 kGy
  • Manufactured in an ISO 13485 environment and packaged under ISO 7 clean room conditions
  • Standard hose barb connections
  • Adjustable air and bubble sensitivity
  • Selectable flow averaging rate
  • Integrated web interface for configuration (password protected)

OEM Version:

  • Stainless steel panel mount transmitter
  • CE and UL certified
  • Integrated electronics and Status LED
  • PoE with no cables at the front
  • ModBus TCP Interface equal to the BioProTT™ FlowMCP


Fig. 1: In total 175 FlowSU 1/2" were tested with water at 21°C.
All sensors were within the defined specification without an individual calibration of each sensor.

Fig. 2: Comparison of the accuracy of the BioProTT™ FlowSU System 1/2" before and after gamma irradiation (50 kGy). The curves represent the mean over 25 samples tested.