Designed for High-Temperature and High-Pressure Processes
The Micropilot FMR54 is built for level measurement where process conditions are more demanding than those found in standard storage or process vessels. Endress+Hauser specifies it for high-temperature and high-pressure applications, with process pressure up to vacuum...160 bar and process temperatures up to +400°C.
Reliable Non-Contact Measurement
As a free-space radar device, the FMR54 measures level without contacting the process medium. It is suitable for liquids, pastes and slurries, while Endress+Hauser notes that the measurement is not affected by changing media, temperature changes, gas blankets or vapors. This makes the instrument particularly useful in processes where conventional level measurement can become more difficult.
A Strong Choice for Steam and Vapor-Rich Applications
The FMR54 is specifically presented by Endress+Hauser for level measurement in liquids where strong steam or ammonia can occur. Its C-band radar technology and signal evaluation are designed to maintain reliable measurement under changing process conditions.
Horn or Planar Antenna Configuration
The FMR54 is available with either a horn antenna or a specially designed planar antenna. The planar antenna is particularly suited to stilling well applications, where the maximum measuring distance can reach 38 m, compared with the standard 20 m measuring distance.
Measurement Stability in Challenging Vessels
Endress+Hauser incorporates Multi-Echo Tracking to improve measurement reliability when obstructions or changing process conditions are present inside the vessel. Heartbeat Technology, HistoROM and optional Bluetooth commissioning further support device verification, commissioning and maintenance.
Integration into Common Process Control Systems
Depending on the selected configuration, the FMR54 supports 4...20 mA HART, PROFIBUS PA and FOUNDATION Fieldbus, with Bluetooth wireless technology available as an option. This allows the transmitter to fit into established process automation architectures without changing the overall measurement principle.
Built for Process Safety and Industrial Service
The FMR54 is available with international explosion protection approvals and safety-related options including SIL and WHG overfill protection. Design approvals and material options are also available for demanding industrial applications, depending on the selected configuration.
Key Features
- C-band radar frequency: approximately 6 GHz
- Measurement principle: continuous, non-contact level radar
- Accuracy: ±6 mm
- Standard measuring distance: up to 20 m
- Planar antenna in stilling well: up to 38 m
- Process temperature: -60...+400°C
- Process pressure: vacuum...160 bar
- Media: liquids, pastes and slurries
- Antenna options: horn or planar antenna
- Main wetted material: 316L
- Communication: 4...20 mA HART, PROFIBUS PA, FOUNDATION Fieldbus
- Optional Bluetooth commissioning and SmartBlue operation
- Multi-Echo Tracking and Heartbeat Technology
- SIL and WHG options
- International hazardous-area approvals available
Typical Applications
High-Temperature Liquid Measurement
Suitable for process vessels containing liquids under elevated temperatures where reliable non-contact level measurement is required.
High-Pressure Process Vessels
The FMR54 is designed for applications with process pressures up to 160 bar, making it suitable for demanding process environments.
Steam- and Vapor-Rich Processes
Its application profile specifically includes liquids where strong steam or ammonia can occur, making it relevant to processes where vapor conditions can complicate level measurement.
Stilling Well Applications
The planar antenna configuration is particularly suited to stilling wells and can provide a measuring distance of up to 38 m.
Pastes and Slurries
Because the measurement is non-contact, the FMR54 can be used for level measurement of pastes and slurries without placing moving or wetted measurement elements directly into the medium.
Chemical and Process Industries
The combination of high-temperature/high-pressure capability, hazardous-area approvals and process safety options makes the FMR54 suitable for demanding chemical and general process applications.
FAQ
What type of level measurement does the Micropilot FMR54 use?
The FMR54 uses C-band free-space radar at approximately 6 GHz for continuous, non-contact level measurement.
What is the measuring range of the FMR54?
The standard maximum measuring distance is 20 m. With the planar antenna in a stilling well application, Endress+Hauser specifies a maximum distance of 38 m. Actual usable range depends on the application and vessel conditions.
What process temperature can the FMR54 handle?
The official specifications list a process temperature range of -60...+400°C. Endress+Hauser's application description also lists configurations with temperatures down to -196°C, so the exact temperature capability should be checked against the selected order configuration.
What is the maximum process pressure?
The specified process pressure range is vacuum...160 bar.
Can FMR54 measure through steam or vapor?
Yes. Endress+Hauser specifically positions the FMR54 for liquids where strong steam or ammonia can occur, and states that measurement is not affected by gas blankets or vapors under the applicable conditions.
Can FMR54 be used in a stilling well?
Yes. The planar antenna version is particularly suited for stilling well applications, with a maximum measuring distance of up to 38 m according to the official product page.
What communication protocols are available?
Depending on configuration, the FMR54 supports 4...20 mA HART, PROFIBUS PA and FOUNDATION Fieldbus. Bluetooth wireless technology is also available as an option.
Is the FMR54 suitable for hazardous areas?
Yes. The product is available with international explosion protection approvals including ATEX, FM, CSA C/US, IECEx, JPN Ex, INMETRO, NEPSI, EAC and UK Ex, depending on configuration.
