Reliable Point Level Detection at High Temperatures
The Endress+Hauser Liquiphant FTL64 is made for applications where ordinary level switches may struggle with high process temperatures.
Using proven vibronic technology, the FTL64 provides dependable point level detection for pumpable liquids and is particularly suited to applications where reliable overfill and dry-run protection are important.
Its high-temperature capability, flexible configuration and safety functions make it a strong choice for demanding process environments.
Built for Hot Process Conditions
One of the key strengths of the FTL64 is its ability to handle demanding thermal conditions.
The standard process temperature range reaches -60 to +280 °C (-76 to +536 °F). For versions with PFA coating, the maximum process temperature is 230 °C.
The device also supports process pressures from vacuum up to 100 bar, while PFA-coated versions are rated up to 40 bar.
A Practical Solution for Overfill and Dry-Run Protection
The FTL64 is designed for point level detection, rather than continuous level measurement.
This makes it particularly useful when a process needs a dependable switching point—for example, to protect a tank from overfilling or prevent a pump from running dry.
The same measurement principle can be used across different applications, helping keep the level detection concept simple even when process conditions become demanding.
Proven Vibronic Technology with Safety in Mind
The Liquiphant FTL64 uses a vibronic measuring principle that has been proven across industrial level applications.
For safety-related applications, the device is developed according to IEC 61508 and supports SIL2/SIL3 applications with third-party approval. It also offers WHG overfill protection for suitable configurations.
This makes the FTL64 especially attractive when level detection is not simply about measurement, but also about protecting equipment and processes.
Easier Testing and Maintenance
The FTL64 includes Heartbeat Technology, which helps with device verification and diagnostics.
It also supports Bluetooth® operation and maintenance through the SmartBlue App, providing a convenient way to access device information and configuration without needing to work directly at the instrument interface.
Other practical features include an LED module, RFID tag for easy identification, second line of defense and temperature spacer for high process temperatures.
Flexible Connections for Different Process Requirements
The FTL64 is available with a variety of process connection options, including threads, flanges and hygienic Tri-Clamp connections.
Depending on configuration, threaded connections include 3/4" and 1", while flange options include DN25 to DN100, ASME 1" to 4" and JIS 50A.
Sensor lengths can reach up to 6 m (19.7 ft), giving the FTL64 enough flexibility for applications ranging from compact vessels to deeper tanks.
Suitable for Challenging Media
The FTL64 can handle liquids with viscosity up to 10,000 mm²/s (cSt).
For aggressive media, an optional conductive PFA coating is available. The main wetted parts are available in 316L and Alloy, depending on the selected configuration.
This combination makes the FTL64 suitable for applications where both temperature and medium characteristics need to be taken seriously.
Key Features
- Vibronic point level switch for pumpable liquids
- Designed for high-temperature applications
- Process temperature: -60 to +280 °C
- PFA-coated version: up to 230 °C
- Process pressure: vacuum to 100 bar
- PFA-coated version: up to 40 bar
- Ambient temperature: -60 to +70 °C
- Minimum medium density: 0.5 g/cm³
- Optional minimum density: 0.4 g/cm³
- Viscosity up to 10,000 mm²/s (cSt)
- Sensor length up to 6 m
- 316L / Alloy wetted-part options
- Threaded, flanged and Tri-Clamp process connections
- Heartbeat Technology
- Bluetooth® / SmartBlue App
- 4-20 mA HART and other configurable communication/output options
- SIL2/SIL3 according to IEC 61508
- WHG overfill protection
- Optional PFA coating for aggressive media
- Wide range of international and marine approvals
Typical Applications
The Liquiphant FTL64 is suitable for:
- Tank overfill protection
- Pump dry-run protection
- High-temperature liquid level detection
- Storage tanks and process vessels
- Chemical process applications
- Oil and gas process applications
- Steam and hot-liquid applications
- Applications with viscous liquids
- Applications requiring SIL level protection
Frequently Asked Questions
What is the Endress+Hauser Liquiphant FTL64 used for?
The Liquiphant FTL64 is a vibronic point level switch for pumpable liquids. It is particularly suited to tank overfill protection and pump dry-run protection, especially in high-temperature applications.
What is the maximum process temperature of the FTL64?
The standard FTL64 supports process temperatures from -60 to +280 °C (-76 to +536 °F). Versions with PFA coating are rated up to 230 °C.
What is the maximum process pressure?
The FTL64 supports process pressure from vacuum up to 100 bar (1450 psi). For PFA-coated versions, the maximum is 40 bar.
Can the FTL64 be used for pump dry-run protection?
Yes. The FTL64 is specifically intended for reliable point level detection for applications including pump dry-run protection.
Is the Liquiphant FTL64 suitable for overfill protection?
Yes. The FTL64 is designed for tank overfill protection, and suitable configurations provide WHG overfill protection.
Does the FTL64 support SIL?
Yes. The FTL64 is developed according to IEC 61508 and supports SIL2/SIL3 applications with third-party approval, depending on the configuration.
Does the FTL64 support Bluetooth?
Yes. The FTL64 supports Bluetooth® operation and maintenance through the SmartBlue App.
What process connections are available?
The FTL64 is available with threaded, flanged and hygienic process connections, including Tri-Clamp. Thread sizes include 3/4" and 1", with flange options including DN25–DN100, ASME 1"–4" and JIS 50A.
How long can the FTL64 sensor be?
The sensor length can reach up to 6 m (19.7 ft), depending on the selected configuration.
