Technical Characteristics and Digital Integration
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Capacitance Measuring Principle: The sensor detects a change in the electrical capacitance around the probe when it is covered by a liquid. While factory-set for media with a dielectric constant > 20, it can be adjusted via IO-Link to detect media with as low as 1.5.
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IO-Link Communication: The FTW23 supports IO-Link, which simplifies parameter setting and device replacement. This digital interface allows for remote configuration and provides detailed status information, reducing commissioning time and costs.
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Hygienic Design: Meeting international hygiene requirements, the FTW23 features a flush-mounted design that prevents product entrapment. It is fully CIP (Clean-in-Place) and SIP (Steam-in-Place) capable, withstanding temperatures up to 135°C for short durations.
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Compact Construction: Its small footprint allows for installation in tight spaces or narrow pipes where traditional level switches might not fit.
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Status Visualization: An integrated LED display provides clear, on-site function checks, allowing operators to verify the switching state at a glance.
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Protection Class IP 69: The device is built to withstand high-pressure, high-temperature washdowns, ensuring long-term reliability in wet and sanitary environments.
Technical Specification Matrix
| Feature | Technical Details |
| Measuring Principle | Capacitance |
| Medium Properties | Water-based liquids, > 20 (factory) or > 1.5 (via IO-Link) |
| Process Temperature | -20 to +100 °C (-4 to +212 °F); CIP/SIP to 135 °C (275 °F) |
| Process Pressure | -1 to 16 bar abs (-14.5 to 232 psi) |
| Housing Material | 316L Stainless Steel |
| Output | 3-wire DC-PNP; IO-Link |
| Protection Class | IP 65/67; IP 69 |
Primary Applications
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Food and Beverage Production: Level detection in water, milk, beer, and fruit juices within storage or mixing vessels.
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Pipe Monitoring: Detecting the presence or absence of liquid in small-diameter process lines to prevent pump dry-running.
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Cleaning Systems: Monitoring the level of cleaning agents and rinse water in CIP stations.
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Industrial Utilities: Reliable point level detection in cooling water loops and utility water tanks.
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Space-Critical Installations: Ideal for skid-mounted equipment and small machines where installation room is limited.
