Technical Characteristics and Operational Versatility
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Mid-Range Capability: The FMU41 extends the compact transmitter performance to reach up to 8 meters in liquids and 3.5 meters in bulk solids. This makes it a versatile solution for municipal water management, chemical processing, and industrial material handling.
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Advanced Signal Diagnostics: A standout feature is the four-line plain text display that provides on-site visualization of the envelope curve. This allows operators to perform advanced echo analysis, ensuring the sensor ignores false reflections from agitators, heating coils, or vessel walls.
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Flexible Electrical Integration: The device is available in both two-wire (loop-powered) and four-wire versions. This flexibility allows it to fit into standard control loops or applications where a separate power supply is preferred for higher signal output.
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Precision Temperature Compensation: Sound velocity changes with temperature. The FMU41 includes an integrated temperature sensor that compensates for these fluctuations in real-time, maintaining high accuracy even in outdoor silos or tanks exposed to direct sunlight.
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Maintenance-Free PVDF Sensor: The sensor is hermetically sealed, potted, and constructed from high-quality PVDF. This ensures it remains unaffected by corrosive liquids or moisture ingress, significantly reducing service requirements compared to mechanical level indicators.
技術仕様マトリックス
| 特徴 | 技術詳細 |
| 測定原理 | 超音波（非接触） |
| 最大使用範囲（液体） | 8 m (26 ft) |
| 最大範囲（固形物） | 3.5 m (11 ft) |
| ブロック距離 | 0.35 m (1.15 ft) |
| プロセス温度 | -40～+80℃（-40～+176°F） |
| プロセス圧力 | 0.7 to 3 bar (10 to 44 psi) |
| センサー材料 | PVDF（気密シール） |
| 保護の程度 | IP68（センサー）／IP66（筐体） |
主な用途
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Medium-Sized Storage Tanks: Level monitoring for oils, fuels, water, and aggressive chemicals.
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Open Channel Flow: Measuring flow rates in large flumes and weirs using the integrated 32-point linearization function.
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Agitated Vessels: Reliable level detection in process tanks with stirrers or mixers, utilizing adjustable echo suppression.
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Bulk Solids Handling: Monitoring levels in hoppers, at conveyor discharge points, or on small-scale stockpiles.
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Hazardous Area Monitoring: Fully certified for use in explosion-hazardous areas with international Gas-Ex and Dust-Ex approvals.
