Endress+Hauser Liquiphant FTL62 – Vibronic Level Switch for Aggressive Liquids
The Liquiphant FTL62 is a high-performance vibronic point level switch designed for reliable detection of liquids in demanding industrial processes.
Unlike continuous level instruments, the FTL62 provides a dependable switching signal when the liquid reaches a defined level point. It is especially suitable for tank overfill protection and pump dry-run protection, where safety, reliability and long-term stability are critical.
Designed for Aggressive and Challenging Media
Many industrial processes involve corrosive liquids or media with changing properties, turbulence, foam or buildup.
The FTL62 is designed with highly corrosion-resistant sensor coatings, including:
ECTFE (Halar) coating
PFA coatings
Enamel coating
These options allow the instrument to be adapted to demanding chemical and process applications where standard metal sensors may not provide sufficient protection.
Key Advantages
Vibronic point level detection
Designed for aggressive pumpable liquids
No calibration required
Reliable switching despite changing media properties
Suitable for liquids with:
Flow
Turbulence
Gas bubbles
Foam
Vibration
Product buildup
Corrosion-resistant coated sensor options
SIL 2 / SIL 3 according to IEC 61508
WHG overfill protection
Heartbeat Technology
Bluetooth® commissioning via SmartBlue App
HART and Ethernet-APL communication options
Process temperature up to 150 °C
Process pressure up to 40 bar
Sensor extension up to 3 m
Reliable Safety Function for Critical Processes
The FTL62 is designed for applications where a simple switching signal must provide dependable process protection.
Typical safety applications include:
Tank overfill protection
Pump dry-run protection
Safety-related level monitoring
Chemical storage tanks
Process vessels containing aggressive liquids
With available SIL 2/SIL 3 certification and WHG overfill protection options, the FTL62 can support safety-focused process designs.
Digital Diagnostics and Smart Maintenance
The FTL62 combines proven vibronic measurement technology with modern digital functions.
With Heartbeat Technology, the device can provide verification and diagnostic information to support predictive maintenance strategies.
Bluetooth® wireless communication and the SmartBlue App simplify commissioning, configuration and troubleshooting directly from mobile devices.
Reliable Measurement Without Calibration
A major advantage of vibronic technology is that the FTL62 does not require calibration before operation.
The switching principle remains reliable even when process conditions change, including variations caused by:
Medium density changes
Foam formation
Turbulence
Product buildup
This reduces commissioning effort and improves operational reliability.
Suitable for Extreme Industrial Conditions
The Liquiphant FTL62 supports demanding process conditions:
Process temperature: -50 to +150 °C
Process pressure: Vacuum to +40 bar
Minimum medium density: 0.5 g/cm³
Optional detection down to 0.4 g/cm³
The device is available with international explosion protection certifications and marine approvals depending on configuration.
Flexible Communication Options
The FTL62 supports multiple communication and integration options, including:
4–20 mA HART
Ethernet-APL
NAMUR
PFM
Relay outputs
Bluetooth® wireless technology
This allows integration into both traditional control systems and modern digital automation architectures.
Main Technical Parameters
Measurement principle: Vibronic
Measurement type: Point level detection
Application: Pumpable liquids
Process temperature: -50 to +150 °C
Process pressure: Vacuum to +40 bar
Minimum medium density: 0.5 g/cm³
Optional density: 0.4 g/cm³
Sensor length: Up to 3 m
Process connections: Flanges DN25–DN100 / ASME 1"–4" / JIS 50A
Sensor materials: 316L, ECTFE, PFA, enamel
Communication: HART, Ethernet-APL, NAMUR, PFM, Bluetooth
Safety: SIL 2/SIL 3, WHG overfill protection
Diagnostics: Heartbeat Technology
Approvals: ATEX, IECEx and other international approvals depending on configuration
Typical Applications
The Liquiphant FTL62 is suitable for:
Chemical storage tanks
Corrosive liquid applications
Tank overfill protection
Pump protection systems
Process vessels
Hazardous area installations
Safety-related level monitoring
Its combination of corrosion resistance, safety certification and digital diagnostics makes it a strong choice for critical liquid level detection applications.
FAQ
What is Liquiphant FTL62 used for?
The FTL62 is a vibronic point level switch for liquids, mainly used for overfill protection and pump dry-run protection in demanding industrial applications.
Is FTL62 suitable for corrosive liquids?
Yes. The FTL62 offers corrosion-resistant sensor coatings such as ECTFE, PFA and enamel, making it suitable for aggressive media.
Does FTL62 require calibration?
No. The vibronic measuring principle allows operation without calibration, reducing commissioning time.
What is the maximum process temperature?
The FTL62 supports process temperatures up to 150 °C depending on configuration.
Can FTL62 be used for safety applications?
Yes. The FTL62 supports SIL 2/SIL 3 according to IEC 61508 and WHG overfill protection options.
Does FTL62 support digital communication?
Yes. It supports digital options including HART, Ethernet-APL and Bluetooth® wireless communication.
What is the difference between FTL33 and FTL62?
FTL33 is optimized for hygienic applications, especially food and beverage processes. FTL62 is designed for industrial applications involving aggressive media, safety requirements and harsh conditions.
