Endress+Hauser Liquiphant FTL41 FTL41-AA4B7AA1A1 Point Level Switch
- Product Name:Endress+Hauser Liquiphant FTL41 FTL41-AA4B7AA1A1 Point Level Switch
- Product Number:FTL41-AA4B7AA1A1
- Brand:Endress+Hauser
- Views:6
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Endress+Hauser Liquiphant FTL41 FTL41-AA4B7AA1A1 Point Level Switch
的详细介绍
Endress+Hauser Liquiphant FTL41 Point Level Switch

FTL41-AA4B7AA1A1
Optimize your process automation and inventory safety with the Endress+Hauser Liquiphant FTL41 (Model: FTL41-AA4B7AA1A1). This industrial-grade vibronic level sensor provides highly reliable point level detection in liquids. It is an ideal solution for overfill prevention, high/low level alarms, and pump dry-run protection, offering a heavy-duty relay output housed in a durable aluminum casing.
Key Features & Benefits
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Universal Liquid Detection: Delivers accurate switching unaffected by changes in liquid density, viscosity, turbulence, bubbles, or surface foam.
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Maintenance-Free Design: Built with no mechanically moving parts, eliminating physical wear and ensuring a long, trouble-free operating life.
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Heavy-Duty Output & Enclosure: Features a powerful DPDT relay output integrated into a robust, coated aluminum single-compartment housing for demanding environments.
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Plug-and-Play Commissioning: Ready to deploy immediately with zero pre-calibration or operational adjustments required.
Technical Specifications: FTL41-AA4B7AA1A1
| Parameter | Specification |
| Brand | Endress+Hauser |
| Product Family | Liquiphant |
| Model Code | FTL41-AA4B7AA1A1 |
| Measurement Type | Vibronic Point Level Detection |
| Approval Rating | Non-hazardous area |
| Electronic Output | FEL44 Relay DPDT (19–253V AC / 19–55V DC) |
| Housing Material | Single compartment; Aluminum, coated |
| Electrical Connection | Thread M20, IP66/68 NEMA Type 4X/6P protection |
| Process Connection | Thread ISO228 G3/4, 316L Stainless Steel |
| Probe Version | Compact version, 316L Stainless Steel wetted parts |
Ideal Applications
The Liquiphant FTL41-AA4B7AA1A1 is designed for storage, utility, and process tanks across diverse industries such as water treatment, chemical utilities, energy management, and machine construction. It is highly effective for:
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Reliable high-level or low-level limit detection in process vessels.
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Overfill containment and environmental protection in liquid storage tanks.
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Dry-run protection for supply pumps in industrial piping systems.
FAQs
1.What are the structural benefits of the aluminum housing on this model?
The coated aluminum single-compartment housing provides superior mechanical protection and structural durability compared to plastic alternatives. Combined with its IP66/68 rating, it offers exceptional resistance to dust, water ingress, and harsh outdoor environmental conditions.
2.Can the FTL41-AA4B7AA1A1 directly switch heavy electrical loads?
Yes, the integrated FEL44 electronic insert features a Double-Pole Double-Throw (DPDT) relay output. This setup allows the sensor to directly switch independent electrical circuits or control elements (such as valves, visual alarms, or pumps) without requiring intermediate signal isolation.
3.Does product buildup on the tuning fork affect the sensor accuracy?
No, the tuning fork vibrates at a specific resonant frequency. Minimal liquid buildup or product coating does not impact this high-frequency vibration system, allowing the device to maintain accurate and consistent switching points throughout its lifespan.
