Technical Characteristics and Extreme Process Resilience
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Dual Functionality: The FDR57 provides both limit detection (min/max level) and bulk flow monitoring. This dual-capability increases process safety by identifying blocked chutes or empty conveyor conditions in real-time.
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High-Temperature & Pressure Ratings: With the ability to withstand up to 450°C (+842°F) and 20 bar (290 psi), this receiver is specifically built for heavy industrial processes like fly ash handling, hot clinker transport, or pressurized reactors.
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Advanced Deposit Detection: Beyond simple switching, the FDR57 can analyze deposits and contamination within filters or conduits, allowing for predictive maintenance before a total blockage occurs.
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Non-Contact Measurement: By measuring through non-metallic windows or container walls, the sensor remains isolated from the process. This wear-free operation is essential for handling abrasive materials like gravel, sand, or cement.
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Intelligent Control Integration: The device is designed for easy operation via the Nivotester FTR525, which features a graphical display for simplified commissioning and diagnostic analysis.
Technical Specification Matrix
| Feature | Technical Details |
| Measuring Principle | Microwave Barrier (Receiver/Transceiver) |
| Interaction | Pairs with Soliwave FQR57 Emitter |
| Process Temperature | Up to +450 °C (+842 °F) |
| Process Pressure | Up to 20 bar (290 psi) |
| Monitoring Modes | Point level, Flow/No Flow, Flow Trend, Object Counting |
| Process Connections | R 1 1/2″, 1 1/2″ NPT, G 1 1/2″ |
| Safety Approvals | International Explosion Protection (ATEX, IECEx, etc.) |
Primary Applications
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Hot Material Handling: Monitoring the flow and level of hot ash, cement clinker, or roasted ores in metal processing and power plants.
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Filter & Dust Collector Monitoring: Detecting the buildup of dust or deposits inside filter housings to optimize cleaning cycles.
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Material Transfer Points: Monitoring the handover between conveyor belts to ensure flow is maintained and to count items or bulk batches.
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High-Pressure Reactors: Non-invasive level and flow monitoring in pressurized chemical vessels where internal probes would be a leak risk.
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Filling Station Automation: Controlling the high-speed filling of containers or bags by monitoring material stream density and flow trends.
