A Straightforward Point Level Solution for Liquids
The Liquiphant FTL41 is designed for applications where the requirement is simple and clear: reliably detect whether liquid has reached a defined level.
Its vibronic measuring principle makes it suitable for minimum and maximum level detection in a wide range of pumpable liquids, without requiring the complexity of a continuous level transmitter.
One Measuring Principle for Different Liquids
One of the practical advantages of the FTL41 is that it does not require adjustment to different liquids. The active sensor technology provides plug-and-play functionality, allowing the same basic measurement principle to be used across different liquid applications.
Stable Switching Without Mechanical Floats
Unlike conventional float switches, the Liquiphant uses a vibrating fork to detect the presence of liquid. This gives the FTL41 a defined and repeatable switching point without relying on moving mechanical float components.
Endress+Hauser specifically highlights its long-term stability compared with float switches and repeatability of the switching point.
Flexible Installation for Different Vessels
The FTL41 is available with threaded, flanged and hygienic Tri-Clamp process connections. An optional pipe extension allows sensor lengths up to 2 m, making it suitable for different tank and vessel dimensions.
Built for Everyday Industrial Service
The FTL41 uses 316L for its main wetted parts and is specified for process temperatures from -40 to +150°C and pressures from vacuum to 40 bar. International hazardous-area approvals and WHG overfill protection are available depending on configuration.
Simple Integration
Depending on the selected electronics, the FTL41 can provide DC-PNP, relay or NAMUR output. This allows the point level switch to fit different control and monitoring architectures without changing the basic sensing principle.
Key Features
- Vibronic point level switch for liquids
- Suitable for minimum and maximum level detection
- Active sensor technology with plug-and-play operation
- No adjustment required for different liquids
- Repeatable switching point
- Optional pipe extension up to 2 m
- Process temperature: -40 to +150°C
- Process pressure: Vacuum to 40 bar
- Minimum medium density: 0.5 g/cm³, optional 0.4 g/cm³
- Main wetted parts: 316L
- Threaded, flanged and Tri-Clamp process connections
- DC-PNP, relay and NAMUR output options
- Ambient temperature: -40 to +70°C
- RFID tag for easy identification
- International hazardous-area approvals available depending on configuration
- WHG overfill protection available
- EN 10204-3.1, ASME B31.3 and CRN design options depending on configuration
Typical Applications
Storage Tanks
The FTL41 can be used for high- and low-level detection in storage tanks containing common industrial liquids.
Pump Protection
As a point level switch, it can provide a simple level signal for applications where pumps need protection against running dry or where a defined liquid level must be maintained.
Process Vessels
The FTL41 is suitable for basic level monitoring in process vessels containing pumpable liquids where continuous level measurement is not required.
Water and Utility Applications
Its straightforward installation and broad liquid compatibility make it suitable for water-related and general utility applications.
Industrial Liquid Handling
The FTL41 can be integrated into filling, emptying and material-handling processes where a reliable switching point is needed.
Hygienic Applications
With available hygienic process connections such as Tri-Clamp, suitable FTL41 configurations can be used in applications where hygienic installation requirements apply.
FAQ
What is the Endress+Hauser Liquiphant FTL41?
The FTL41 is a vibronic point level switch for liquids. It detects whether liquid has reached a defined switching point and can be used for minimum or maximum level detection.
Is the FTL41 a continuous level transmitter?
No. The FTL41 is a point level switch, not a continuous level transmitter. It provides a switching signal when the liquid reaches the defined detection point.
Does the FTL41 need to be adjusted for different liquids?
No. Endress+Hauser states that the active sensor technology provides plug-and-play functionality and does not require adjustment to different liquids.
What is the maximum process temperature?
The specified process temperature range is -40 to +150°C.
What is the maximum process pressure?
The FTL41 is specified for process pressures from vacuum to 40 bar.
How long can the FTL41 sensor be?
The FTL41 can be configured with an optional pipe extension, with a maximum sensor length of 2 m.
What liquids can the FTL41 detect?
The FTL41 is designed for pumpable liquids and has a minimum medium density of 0.5 g/cm³, with 0.4 g/cm³ available as an option.
What outputs are available?
Depending on the selected electronics, the FTL41 is available with DC-PNP 3-wire, relay or NAMUR output.
What process connections are available?
Depending on configuration, the FTL41 is available with G3/4A, G1A, R3/4, R1, NPT3/4 and NPT1 threads, flanges from DN25 to DN100, ASME 1" to 4", JIS 25A to 50A, and Tri-Clamp ISO2852 hygienic connections.
Is the FTL41 suitable for hazardous areas?
Yes. Depending on configuration, the FTL41 has international hazardous-area approvals including ATEX, IECEx, CSA and NEPSI.
