Endress+Hauser FTL51B-3M7P50 Switch | Vibrating Fork, Level, Solid/Liquid, 316L, 2-Wire, 24V DC
Endress+Hauser FTL51B-3M7P50 level switch specifications. Tuning fork, 2-wire, 24V DC, 316L, for high/low level detection.
Product Overview
The Endress+Hauser FTL51B-3M7P50 is a compact, 2-wire vibrating fork level switch designed for reliable point level detection of liquids and solids. It features 316L stainless steel wetted parts, operates on a 24V DC, 2-wire loop, and provides a switching signal (PNP/NPN) for alarm or control functions. Its simple installation, lack of moving parts, and insensitivity to material properties make it ideal for high or low-level detection in tanks, silos, and pipelines.
Technical Specifications (Switch)
| Parameter | Specification |
| Manufacturer | Endress+Hauser AG |
| Series | Liquiphant (FTL51) |
| Model | FTL51B-3M7P50 |
| Product Type | 2-Wire Tuning Fork Level Switch |
| Detection Principle | Vibrating fork (mechanical resonance) |
| Media Detection | Liquids, pastes, slurries |
| Fork Length | Standard (e.g., 100mm) |
| Output | Switching (PNP or NPN), 2-wire |
| Process Connection | G1" or 1" NPT (typical) |
| Wetted Parts | 316L stainless steel |
Technical Specifications (Electrical/Mechanical)
| Parameter | Specification |
| Supply Voltage | 8-30V DC (2-wire) |
| Switching Current | Typically 4-20 mA in switching mode |
| Max. Load | ≤ 500 Ω |
| Response Time | ≤ 1 second |
| Process Temperature | -50 to 150°C (-58 to 302°F) |
| Process Pressure | Up to 100 bar (1450 psi) |
| Ambient Temperature | -40 to 80°C (-40 to 176°F) |
| Protection Rating | IP66/IP68 |
| Electrical Connection | 1/2" NPT conduit with plug |
| Certifications | CE, ATEX, IECEx, SIL 2 |
Key Features
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2-Wire Technology: Simple installation with only two wires for power and signal
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No Moving Parts: Maintenance-free, reliable operation
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Insensitive to Media: Unaffected by density, conductivity, or viscosity changes; detects liquids and solids
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Robust 316L Construction: Corrosion-resistant and suitable for abrasive media
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High Pressure & Temperature Rating: For demanding process conditions
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No Calibration Required: Ready to use after installation
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IP68 Submersible: Suitable for submersion
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Hazardous Area Certified: Approved for explosive atmospheres
Applications
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Pump control (dry-run protection, fill/empty control)
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High/low level alarm in tanks and vessels
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Overflow/underflow protection
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Interface detection
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Level monitoring in chemical, pharmaceutical, food & beverage, and water treatment industries
About ACH
Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL and EMERSON to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.
Frequently Ask & Questions
Are preferential prices available?
Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.
Are the Products Genuine OEM Units?
Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.
How will you arrange shipment?
We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.
What is the warranty of goods?
One-year Warranty.
How long is the logistics cycle of the product?
Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.