Endress+Hauser Liquiphant FTL43 – Hygienic Point Level Switch

The Liquiphant FTL43 is a compact vibronic point level switch for liquids, designed especially for hygienic and aseptic applications. It provides reliable point level detection in process tanks, storage tanks and pipelines, making it suitable for applications where dependable overfill protection and level monitoring are required.

As part of the Endress+Hauser Compact Line, the FTL43 combines a space-saving design with hygienic construction and a range of digital communication options.

Reliable Vibronic Level Detection

The FTL43 uses a vibration-based measuring principle to detect whether the tuning fork is covered by liquid. One important advantage is that the device works reliably with pumpable liquids without requiring medium adjustment. This makes it suitable for applications involving liquids with different densities.

Key performance:

• 
  Measuring principle: Vibronic / vibration liquids
  
• 
  Application: Point level detection in liquids
  
• 
  Minimum medium density: 0.5 g/cm³
  
• 
  Optional minimum density: 0.4 g/cm³
  
• 
  Process temperature: –40 to +150 °C
  
• 
  Process pressure: Vacuum to 64 bar
  
• 
  Wetted parts: 316L
  
• 
  Power supply: 12–30 V DC
  
• 
  Communication: IO-Link, HART and Bluetooth
  
• 
  Sensor length: 148 to 1500 mm
  
• 
  Surface finish: Mechanical or electropolished
  

Hygienic Design for Food & Beverage and Life Sciences

The FTL43 is specifically designed for hygienic and aseptic applications, with a compact hygiene housing and a range of hygienic process connections.

Available connections include Tri-Clamp, DIN 11851, DIN 11864-1, Ingold, flush mount, DRD, SMS 1145 and Varivent/Varinline, providing flexibility for different hygienic process installations.

The wetted parts are manufactured from 316L, while surface finishing can be specified as mechanical or electropolished depending on the application requirements.

Compact Design for Restricted Installation Spaces

The compact sensor configuration is particularly useful for narrow skids, modules and process pipelines where installation space is limited.

An optional pipe extension allows sensor lengths of up to 1.5 m, providing additional flexibility for tanks and other installation conditions.

Typical applications include:

• 
  Overfill protection in process tanks
  
• 
  Pump dry-run protection
  
• 
  Point level detection in storage tanks
  
• 
  Level detection in narrow skids and modules
  
• 
  Detection of liquids with different densities
  
• 
  Level monitoring in pipelines
  

Easy Operation and Digital Connectivity

The FTL43 is designed with plug-and-play functionality and one-button operation, helping simplify device setup and commissioning.

For digital integration and maintenance, the device supports IO-Link, HART and Bluetooth wireless technology. Bluetooth enables wireless operation and maintenance, while IO-Link provides digital communication for compatible automation systems.

Advanced Diagnostics with Heartbeat Technology

The FTL43 incorporates Heartbeat Technology, providing additional diagnostic and verification functions for device monitoring.

This helps support a more structured maintenance approach while providing greater visibility into the condition of the measuring device.

Broad Certification and Approval Options

For applications requiring specific regulatory or hazardous-area approvals, the FTL43 is available with a broad range of certifications and approvals, including ATEX, IECEx, INMETRO Ex, NEPSI Ex/CCC and UK Ex options.

The device also supports WHG overfill protection, while design and documentation options include EN 10204 inspection certificate 3.1, cGMP conformity and ASME B31.3 declaration of conformity.

Frequently Asked Questions

What is the Liquiphant FTL43 used for?

The FTL43 is used for point level detection of liquids, including overfill protection, pump dry-run protection and level monitoring in process tanks, storage tanks and pipelines.

What measuring principle does the FTL43 use?

The FTL43 uses a vibronic vibration principle to detect the presence or absence of liquid at the switching point.

Does the FTL43 require medium adjustment?

No. The vibronic measuring principle is designed to operate reliably with pumpable liquids without media adjustment.

What is the maximum process temperature?

The FTL43 supports process temperatures from –40 to +150 °C.

What is the maximum process pressure?

The specified process pressure range extends from vacuum up to 64 bar.

Does the FTL43 support IO-Link and HART?

Yes. Depending on the selected configuration, the FTL43 supports IO-Link, HART and Bluetooth wireless communication.