Endress+Hauser Levelflex FMP54 – Premium Guided Radar for Extreme Temperature and Pressure Applications

The Levelflex FMP54 is a premium guided radar level transmitter designed for continuous liquid level measurement under extreme process conditions. It is specifically developed for industries such as oil & gas, chemical processing and power generation, where high temperature, high pressure, steam and aggressive process environments demand maximum measurement reliability.

Based on the proven time-of-flight guided radar technology, the FMP54 provides stable and accurate level measurement even when conventional measurement technologies face limitations caused by changing process conditions, vapor formation or moving surfaces.

High-Performance Guided Radar Measurement

The Levelflex FMP54 transmits electromagnetic pulses along a probe installed inside the vessel. The signal reflection from the product surface is analyzed to calculate the level accurately.

The guided radar principle provides a focused measurement path, reducing the influence of external factors and ensuring dependable operation in demanding applications.

Key performance:

• 
  Measuring principle: Guided radar (Time-of-Flight)
  
• 
  Application: Continuous liquid level measurement
  
• 
  Accuracy:
  
  
  Rod probe: ±2 mm
  
  
  Rope probe ≤15 m: ±2 mm
  
  
  Rope probe >15 m: ±10 mm
  
  
  Coaxial probe: ±2 mm
  
  
  
• 
  Maximum measuring range:
  
  
  Rod probe: up to 10 m
  
  
  Rope probe: up to 45 m
  
  
  Coaxial probe: up to 6 m
  
  
  
• 
  Process temperature:
  
  
  XT version: –196 to +280°C
  
  
  HT version: –196 to +450°C
  
  
  
• 
  Process pressure: Vacuum to +400 bar
  
• 
  Probe options: Rod / Rope / Coaxial
  
• 
  Communication: HART, PROFIBUS PA, FOUNDATION Fieldbus, Bluetooth
  
• 
  Safety: SIL 2/3, WHG overfill prevention, steam boiler approval available
  
  
  

Designed for Extreme Temperature and High Pressure Processes

Many industrial applications require level measurement inside vessels operating under severe conditions.

The FMP54 is specially designed for:

• 
  Steam boilers
  
• 
  High-pressure reactors
  
• 
  Chemical process vessels
  
• 
  Ammonia and toxic media applications
  
• 
  Refinery equipment
  
• 
  Power generation systems
  

With process capability up to 450°C temperature and 400 bar pressure, the FMP54 provides reliable measurement where standard level instruments may not be suitable.

Reliable Measurement with Steam, Vapor and Changing Media

Steam and gas phases can significantly affect many level measurement technologies.

The Levelflex FMP54 features specialized gas phase compensation technology, helping maintain reliable measurement performance in applications with:

• 
  Steam atmosphere
  
• 
  Vapor formation
  
• 
  Gas phase changes
  
• 
  Moving product surfaces
  
• 
  Foam conditions
  
• 
  Changing media properties
  

This makes the FMP54 especially valuable in high-temperature processes where stable measurement is critical.

Advanced Signal Processing for Maximum Measurement Confidence

The FMP54 integrates Endress+Hauser’s advanced Multi-Echo Tracking technology.

Instead of analyzing only the strongest signal, the system continuously evaluates multiple echoes to identify the true product level and reject interference.

Advantages include:

• 
  Improved reliability in difficult tank conditions
  
• 
  Better performance with internal structures
  
• 
  Reduced risk of false level signals
  
• 
  Stable operation during process changes
  

Flexible Probe Selection for Different Applications

The FMP54 offers three probe designs to match different tank configurations.

Rod Probe

Suitable for:

• 
  Short measuring distances
  
• 
  Compact vessels
  
• 
  Stable liquid applications
  

Maximum range:

• 
  Up to 10 m
  

Rope Probe

Suitable for:

• 
  Tall vessels
  
• 
  Large storage tanks
  
• 
  Long measurement distances
  

Maximum range:

• 
  Up to 45 m
  

Coaxial Probe

Suitable for:

• 
  Clean liquids
  
• 
  Applications requiring maximum signal stability
  

Maximum range:

• 
  Up to 6 m
  

Gas-Tight Feedthrough for Enhanced Safety

For demanding applications involving hazardous or toxic media, the FMP54 provides a gas-tight feedthrough design.

This helps improve process safety by preventing gas or vapor leakage through the instrument connection area.

Typical applications include:

• 
  Ammonia systems
  
• 
  Chemical reactors
  
• 
  Pressurized process equipment
  

Smart Diagnostics and Lifecycle Management

The FMP54 integrates Endress+Hauser digital technologies to simplify commissioning, operation and maintenance.

Available functions include:

• 
  Heartbeat Technology
  
• 
  Bluetooth commissioning
  
• 
  SmartBlue App operation
  
• 
  HistoROM data management
  
• 
  RFID TAG identification
  

These features help reduce downtime and improve asset management throughout the instrument lifecycle.

Safety-Critical Applications

For industries where measurement failure can affect safety or production, the FMP54 supports advanced safety functions.

Available options include:

• 
  SIL capability up to SIL 3
  
• 
  WHG overfill prevention
  
• 
  International explosion protection approvals
  
• 
  Marine approvals
  
• 
  Steam boiler approval
  
• 
  5-point linearity protocol
  

Typical Applications

The Levelflex FMP54 is widely used in:

• 
  Oil & Gas
  
• 
  Chemical Industry
  
• 
  Petrochemical Plants
  
• 
  Power Generation
  
• 
  Refineries
  
• 
  Energy Facilities
  

Typical measurement points include:

• 
  Steam boilers
  
• 
  High-pressure vessels
  
• 
  Reactors
  
• 
  Storage tanks
  
• 
  Process columns
  
• 
  Separation equipment
  

Frequently Asked Questions

What is Endress+Hauser Levelflex FMP54 used for?

The FMP54 is designed for continuous liquid level measurement in extreme temperature and pressure applications, especially in oil & gas, chemical and power industries.

What makes FMP54 different from FMP51?

The FMP54 is optimized for more extreme process conditions, offering higher temperature capability up to 450°C and pressure capability up to 400 bar.

Can the FMP54 measure in steam or vapor environments?

Yes. The FMP54 includes gas phase compensation technology to maintain reliable measurement performance in applications with steam and gas phases.

What is the maximum measuring range of FMP54?

The maximum range is up to 10 m with rod probe, 45 m with rope probe, and 6 m with coaxial probe.

Can FMP54 be used for high-pressure vessels?

Yes. The FMP54 supports process pressures up to 400 bar, making it suitable for demanding high-pressure applications.

Does FMP54 support safety applications?

Yes. The FMP54 supports SIL functions, WHG overfill prevention and multiple international approvals depending on configuration.