Technical Characteristics and Performance
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Extreme Range and Beam Focusing: The FMR67B features a highly focused 80 GHz beam that allows it to “see” past internal cross-bracing and along silo walls in vessels as deep as 125 meters. This makes it ideal for the largest industrial silos in the mining and cement industries.
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Extreme Temperature and Pressure Resistance: With a design that withstands temperatures from -40 °C to +450 °C, the FMR67B can be installed directly into high-heat processes, such as clinker coolers or smelting furnaces, without the need for complex cooling systems.
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Heartbeat Technology for Solids: In heavy-duty solids environments, dust buildup and antenna abrasion are constant risks. Heartbeat Technology continuously monitors the signal strength and antenna condition, identifying anomalies and providing diagnostics to ensure the process remains productive and safe.
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Guided Lifecycle Wizards: The FMR67B simplifies complex tasks through on-screen wizards. Whether it is the initial commissioning, a safety-critical SIL proof test, or a device verification, the step-by-step instructions ensure high reliability and reduce the risk of manual configuration errors.
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Intelligent Evaluation: Combined with its narrow beam, the device uses advanced software algorithms to distinguish between the actual material surface and interfering signals from silo internals. This “Safety by Design” approach ensures a stable level reading even during filling and emptying cycles.
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Seamless Integration: Designed for the modern industrial plant, the FMR67B integrates easily into asset management systems via digital communication, providing deep insights into process health and material inventory.
Technical Specification Matrix
| Feature | Technical Details |
| Measuring Principle | Free-space Radar (W-band) |
| Frequency | 80 GHz |
| Measuring Range | Up to 125 m (410 ft) |
| Accuracy | ±3 mm (0.12 in) |
| Process Temperature | -40 to +450 °C (-40 to +842 °F) |
| Process Pressure | -1 to +160 bar (-14.5 to +2,320.6 psi) |
| Communication | 4-20 mA HART, Bluetooth, PROFIBUS PA, PROFINET |
| Safety & Compliance | SIL 2/3, ATEX, IECEx, 5/10-pt Calibration |
Primary Applications
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Cement and Clinker Storage: High-accuracy measurement in tall silos and high-temperature clinker bunkers.
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Mining Bunkers: Level monitoring for ore, crushed stone, and coal in deep underground bunkers or large-scale stockpiles.
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Steel and Smelting: Monitoring levels in high-temperature flux and raw material bins adjacent to furnaces.
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Massive Agricultural Silos: Inventory management in tall grain terminals and flour mills where 100m+ range is required.
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Power Generation: Level tracking in fly ash silos and large-scale coal bunkers where extreme dust is present.
