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Liquiphant FTL43 – hygienic point level switch for liquids
New

Proven in the field, particularly compact and perfectly suitable for hygienic applications

Office situation support
Have questions about this product?

Liquiphant FTL43 – hygienic point level switch for liquids
New

Proven in the field, particularly compact and perfectly suitable for hygienic applications

Get a quote

Benefits

  • Outstanding ease of use due to easy commissioning with plug & play functionality
  • Improved process and product safety through configuration integrity - a checksum algorithm (CRC) ensures that safety relevant parameters remain unchanged
  • Increased productivity thanks to traceable and documented on-demand verification without process interruption and continuous diagnostics with Heartbeat Technology
  • Documented compliance through certified hygienic design as well as proven material conformity and traceability
  • User-friendly operation with guided wizards and a wide range of digital communication options

Integrated technologies

Heartbeat Technology
Digital Communication & Integration
IO-Link digital communication technology
FLEXible answers to individual needs
Current product

Liquiphant FTL43 – hygienic point level switch for liquids

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  • Standard products
  • Reliable, robust and low-maintenance

What is FLEX?

FLEX selections
Technical excellence
Simplicity
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Fundamental selection Meet your basic measurement needs
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Lean selection Handle your core processes easily
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Extended selection Optimize your processes with innovative technologies
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Xpert selection Master your most challenging applications
Variable
Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

Learn more

Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

Learn more

24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

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Technology
Heartbeat Technology

Smart instrumentation through Heartbeat Technology

You want to increase plant performance and reduce costs? Our smart instrumentation portfolio with Heartbeat Technology offers in-depth device insight for more cost-efficiency and operational safety.

Technology

Digital Communication & Integration

Seamless integration of our field devices into the automation systems of many manufacturers. Field device tests in vendor-independent environment. Support of open standards.

Technology
IO-Link digital communication technology

IO-Link communication

IO-Link communication helps to digitalize your plant

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Product information

Liquiphant FTL43 – product picture
Liquiphant-FTL43
Specifications
Measuring / Application task Point Level / Liquids
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Description

The Liquiphant FTL43 is a point level switch for liquids and part of the Compact Line. The product line is especially developed for hygienic applications and combines compact design with full performance. The proven vibronic technology works reliably in all pumpable liquids, without media adjustment. The Liquiphant FTL43 is distinguished by its ease of use with plug & play functionality and a wide range of digital communication options.

Field of application

Liquiphant FTL43 is used for point level detection in process and storage tanks as well as in pipelines.

Liquiphant FTL43 covers a wide range of hygienic applications:

  • Level detection in narrow skids and modules for various liquids
  • Pump dry run protection in pipes
  • Overfill protection in process tanks
  • Detection of media with different densities
Benefits
  • Outstanding ease of use due to easy commissioning with plug & play functionality
  • Improved process and product safety through configuration integrity - a checksum algorithm (CRC) ensures that safety relevant parameters remain unchanged
  • Increased productivity thanks to traceable and documented on-demand verification without process interruption and continuous diagnostics with Heartbeat Technology
  • Documented compliance through certified hygienic design as well as proven material conformity and traceability
  • User-friendly operation with guided wizards and a wide range of digital communication options
Downloads
Most downloaded
Operating Instruction (BA)
BA Liquiphant FTL43 Vibronic
IO-Link
English version - 05/2025
Download
Operating Instruction (BA)
BA Liquiphant FTL43 Vibronic
HART
English version - 05/2025
Download
Technical Information (TI)
TI Weld-in adapter, process adapter and flanges Level, pressure, temperature
English version - 06/2026
Download
The CAD Drawings will be available after the configuration.
All downloads
130 Downloads
Technical Information (TI)
TI Weld-in adapter, process adapter and flanges Level, pressure, temperature
English version - 06/2026
Download
Technical Information (TI)
TI Liquiphant FTL43 HART Vibronic
English version - 11/2024
Download
Technical Information (TI)
TI Liquiphant FTL43 IO-Link Vibronic
English version - 09/2023
Download
Operating Instruction (BA)
Most downloaded
BA Liquiphant FTL43 Vibronic
HART
English version - 05/2025
Download
Operating Instruction (BA)
Most downloaded
BA Liquiphant FTL43 Vibronic
IO-Link
English version - 05/2025
Download
Device Parameter (GP)
GP Liquiphant FTL43 Vibronic
IO-Link
English version - 09/2024
Download
Device Parameter (GP)
GP Liquiphant FTL43 Vibronic
HART
English version - 11/2024
Download
Short Instruction (KA)
KA Liquiphant FTL43 Vibronic
IO-Link
English version - 05/2025
Download
Short Instruction (KA)
KA Liquiphant FTL43 Vibronic
HART
English version - 05/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga/Gb
Ex ia IIC T4...T1 Gb
Ex ia IIIB T135 °C Da/Db
Ex ia IIIB T135 °C Db
English version - 11/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga
Ex ia IIIB T135 °C Da
English version - 11/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 II 1 G Ex ia IIC T4 Ga
II 1 D Ex ia IIIB T135 °C Da
English version - 05/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 ATEX, IECEx:
Ex ia IIC T4 Ga/Gb
Ex ia IIC T4 Gb
Ex ia IIIB T135 °C Da/Db
Ex ia IIIB T135 °C Db
English version - 05/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga
Ex ic IIC T4...T1 Gc
English version - 10/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga
Ex ia IIIB T<sub>200</sub>135 °C Da
English version - 12/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 0/1Ex ia IIC T4...T1 Ga/Gb X
Ex ia IIIB T135 °C Da/Db X
English version - 12/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 0Ex ia IIC T4...T1 Ga X
2Ex ic IIC T4...T1 Gc X
English version - 12/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 0/1Ex ia IIC T4...T1 Ga/Gb X
English version - 12/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga/Gb
Ex ia IIC T4...T1 Gb
English version - 11/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga/Gb
Ex ia IIC T4...T1 Gb
Ex ia IIIB T135 °C Da/Db
Ex ia IIIB T135 °C Db
English version - 10/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga
Ex ia IIIB T135 °C Da
English version - 10/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga/Gb
Ex ia IIC T4...T1 Gb
English version - 12/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga
Ex ic IIC T4...T1 Gc
English version - 12/2025
Download
Ex Safety Instruction (XA)
XA Liquiphant FTL43, FTL60 Ex ia IIC T4...T1 Ga/Gb
Ex ia IIC T4...T1 Gb
Ex ia IIIB T<sub>200</sub>135 °C Da/Db
Ex ia IIIB T135 °C Db
English version - 12/2025
Download

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Selection of compatible products

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Spare parts and accessories

Sealing
Sealing

Profile gasket 29x36x3.7, FDA, 5 pcs.

Sealing
Sealing
Order code 52014424
Drawing number 21
Sealing
Sealing

Profile gasket 29x36x3.7, FDA, USP, 5pcs

Sealing
Sealing
Order code 71075662
Drawing number 21
Sealing
Sealing

O-ring 21.89x2.62 VMQ, FDA, 5 pcs.

Sealing
Sealing
Order code 52014473
Drawing number 21
Sealing
Sealing

O-ring 28.17x3.53 VMQ, FDA, 5 pcs.

Sealing
Sealing
Order code 52014472
Drawing number 21
Spare parts and accessories
Liquiphant FTL43 – product picture
Liquiphant-FTL43
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Add your product to the cart and request a quote. Whether it is un-configured, partially configured, or fully configured, our experts will contact you to complete the configuration and provide your quote.

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Spare parts and accessories

Sealing
Sealing

Profile gasket 29x36x3.7, FDA, 5 pcs.

Sealing
Sealing
Order code 52014424
Drawing number 21
Sealing
Sealing

Profile gasket 29x36x3.7, FDA, USP, 5pcs

Sealing
Sealing
Order code 71075662
Drawing number 21
Sealing
Sealing

O-ring 21.89x2.62 VMQ, FDA, 5 pcs.

Sealing
Sealing
Order code 52014473
Drawing number 21
Sealing
Sealing

O-ring 28.17x3.53 VMQ, FDA, 5 pcs.

Sealing
Sealing
Order code 52014472
Drawing number 21
Spare parts and accessories

Selection of compatible products

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