Technical Characteristics and Single-Use Integration
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Non-Invasive Measurement: The sensor attaches to the outside of a plastic single-use bag or glass container. It detects the presence of foam through the wall of the vessel, eliminating the need for process penetrations or contact with the biological medium.
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Self-Adhesive FZZ61 Sensor: The flexible, adhesive sensor strip can be easily applied to the external surface of a fermentation bag. This streamlines the setup process in bioprocessing suites and allows the sensor to be disposed of or moved after the batch is completed.
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Proven Capacitive Technology: The FTZ61 relies on established capacitive principles to detect the change in dielectric properties caused by foam. Because the technology is well-understood, it requires minimal validation effort compared to newer, more complex sensing methods.
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Optimized Anti-Foam Control: By providing reliable foam detection, the system allows for the precise dosing of anti-foam agents. This prevents over-dosing, which can negatively impact cell respiration and product quality, while ensuring the batch does not overflow.
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Compact and Flexible: The transmitter and sensor duo are designed for space-limited laboratory and production environments, making them easy to integrate into existing bioprocessing skids and single-use setups.
Technical Specification Matrix
| Feature | Technical Details |
| Measuring Principle | Capacitive (Non-contact) |
| Target Medium | Foam in non-conductive containers |
| Container Material | Plastic (PE, PP, etc.), Glass |
| Sensor Type | Self-adhesive flexible strip (FZZ61) |
| Measurement Type | Point level / Foam detection |
| Industry Focus | Life Sciences / Biopharmaceutical |
| Key Benefit | 100% Contamination-free |
Primary Applications
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Single-Use Bioreactors (SUBs): Detecting foam levels during cell culture or fermentation to protect the headspace and filters.
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Plastic Fermentation Bags: Ideal for small to large-scale bioprocessing bags where traditional invasive probes cannot be used.
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Glass Process Vessels: Non-contact foam monitoring in laboratory-scale glass reactors where internal space is at a premium.
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Media Preparation: Detecting foam during the aggressive mixing or agitation of cell culture media and buffers.
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Sterile Filling Lines: Monitoring for foam presence in surge tanks or plastic tubing during the final filling stages of biopharmaceuticals.
