Technical Characteristics and Silo Integration
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Vibronic Measurement Principle: The tuning fork is piezo-electrically excited to its resonance frequency. When covered by bulk solids, the vibration frequency is dampened; the electronics detect this shift and trigger a switching signal. This method is highly reliable for non-fluidized solids and is completely unaffected by flow noises or external vessel vibrations.
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Rigid Extension Pipe: Available in three standard lengths, the extension pipe allows for precise positioning of the detection point. This is particularly useful for top-entry installations where the material surface is not immediately adjacent to the silo roof.
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Maintenance-Free Durability: With no mechanically moving parts, the FTM21 eliminates the jamming and wear issues common with rotary paddle switches. The 316L stainless steel fork is highly abrasion-resistant, ensuring a long service life even when monitoring building materials like cement or lime.
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Plug and Play Simplicity: No calibration or on-site media adjustment is required. The device is ready for operation immediately after installation, reducing commissioning time and costs.
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Status Monitoring: The device is available with a transparent plastic housing cover, allowing operators to verify the switching status via an internal LED without opening the enclosure. A robust aluminum housing is also available for more demanding environments.
Ma trận thông số kỹ thuật
| Tính năng | Thông tin kỹ thuật chi tiết |
| Nguyên lý đo lường | Vibronic (Âm thoa cho vật rắn) |
| Thiết kế thiết bị | Extension pipe version (500 mm, 1,000 mm, 1,500 mm) |
| Nhiệt độ xử lý | -40 đến +150 °C (-40 đến +300 °F) |
| Áp suất quy trình | -1 đến +25 bar (-14,5 đến +360 psi) |
| Vật liệu cảm biến | Thép không gỉ 316L |
| Vật liệu xây nhà | Nhựa (PBT) hoặc Nhôm |
| Tín hiệu đầu ra | Rơle DC-PNP, 2 dây AC |
| An toàn & Tuân thủ | ATEX, IECEx, CSA (Bảo vệ chống cháy nổ do bụi/khí) |
Ứng dụng chính
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Building Materials: Monitoring sand, gravel, and cement in storage silos where top-entry detection is required.
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Food and Grain: High-level detection in storage bins for wheat, corn, animal feed, or flour.
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Plastics and Chemicals: Point level switching for plastic pellets, granules, or powdered chemical additives.
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Wood Processing: Level monitoring for wood chips, pellets, or sawdust in collection hoppers.
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Dust-Hazardous Environments: Fully certified for use in areas where combustible dusts (Zone 20/21/22) are present.
