Technical Characteristics and Silo Versatility
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Vibronic Principle for Bulk Solids: The sensor’s tuning fork is piezo-electrically driven to its resonance frequency. When covered by solids, the vibration frequency or amplitude changes; the electronics detect this shift and trigger a switch. This technology is highly reliable for low bulk density powders where other principles might fail.
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Flexible Extension Pipe: The FTM51 can be customized with an extension pipe ranging from 300 mm to 4,000 mm. This allows for precise high-level or low-level detection at specific depths, particularly when the sensor is installed through the top of a silo.
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SIL2 Functional Safety: Developed in accordance with IEC 61508, the FTM51 is certified for use in safety-instrumented systems, ensuring reliable overfill prevention in critical industrial processes.
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Build-up and Abrasion Diagnostics: The device includes a selectable display for monitoring material build-up and fork abrasion. This enables predictive maintenance by alerting operators if the sensor is being worn down by abrasive media like sand or chalk.
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Immunity to External Interference: The measurement is unaffected by external vibrations from agitators or conveyors, and the sensor design naturally resists the effects of material build-up on the tuning fork.
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Specialized Coatings: For sticky or aggressive materials, the sensor is available with PTFE or ETFE coatings. Polished versions (0.8 µm) are also available for hygienic applications in the food industry.
ตารางข้อมูลจำเพาะทางเทคนิค
| คุณสมบัติ | รายละเอียดทางเทคนิค |
| หลักการวัด | ไวโบรนิก (ส้อมเสียงสำหรับของแข็ง) |
| การออกแบบเซ็นเซอร์ | Extension pipe version (up to 4 m / 13 ft) |
| อุณหภูมิกระบวนการ | -50 ถึง +280 องศาเซลเซียส (-60 ถึง +540 องศาฟาเรนไฮต์) |
| แรงดันกระบวนการ | -1 ถึง +25 บาร์ (-14.5 ถึง +360 psi) |
| วัสดุเซ็นเซอร์ | 316L (เคลือบ PTFE หรือ ETFE ได้ตามต้องการ) |
| Bulk Density | ≥10 g/l |
| สัญญาณเอาต์พุต | รีเลย์, PNP, NAMUR, PFM, ไทริสเตอร์ |
| ความปลอดภัยและการปฏิบัติตามกฎระเบียบ | SIL2, ATEX, IECEx, FM, CSA |
การใช้งานหลัก
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Large Grain and Flour Silos: Detecting high and low levels in tall storage structures for the food and animal feed industries.
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Chemical Powder Processing: Monitoring dye powders, chemical catalysts, or fine plastic granules.
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Abrasive Solid Detection: Use in silos for chalk, gypsum, or cement where the abrasion detection feature protects the sensor’s longevity.
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Dust-Hazardous Environments: Certified for use in Zone 20/21/22 where combustible dusts pose an explosion risk.
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High-Temperature Bulk Storage: Reliable point level switching in processes involving hot solids up to +280 °C.
