Pressure/flow control unit with Endress+Hauser Proline Prowirl D 200 vortex flowmeter and Cerabar FMD72 pressure transmitter

The Endress+Hauser Cerabar FMD72 is an advanced radar level transmitter specifically designed for continuous level measurement of liquids and interface detection in storage and process vessels. As part of Endress+Hauser's comprehensive level measurement portfolio, the FMD72 combines sophisticated 80 GHz Frequency Modulated Continuous Wave (FMCW) radar technology with robust construction and intelligent software algorithms to deliver reliable and precise measurements even in challenging process conditions. This transmitter is engineered to handle applications across various demanding industries including oil and gas, chemical processing, power generation, water and wastewater treatment, and storage terminal operations.

The FMD72 utilizes state-of-the-art 80 GHz FMCW radar technology which represents the current industry standard for radar level measurement. This high frequency enables a very focused beam angle, typically as narrow as 3° or 4°, which provides exceptional accuracy and minimizes interference from vessel internals such as agitators, baffles, or heating coils. The operating principle involves transmitting a continuous frequency-modulated microwave signal toward the product surface. The reflected signal from the product surface is received and compared with the transmitted signal. The frequency difference between these signals is directly proportional to the distance to the product surface, allowing for highly accurate level calculation. This technology ensures reliable measurements regardless of changing process conditions such as pressure, temperature, or vapor presence, and it remains unaffected by dust, steam, or other obstructions in the vapor space.

1. Exceptional Measurement Performance: The FMD72 delivers outstanding measurement accuracy, typically within ±2 mm, thanks to its high 80 GHz frequency and advanced signal processing capabilities. The device features excellent signal focus that prevents false echoes from vessel obstructions and ensures stable measurement of even low-dielectric products. The transmitter maintains reliable performance during filling and emptying cycles, foam formation, and turbulent surface conditions.

2. Intuitive Commissioning and Operation: Endress+Hauser has incorporated sophisticated setup and diagnostic tools to simplify device configuration. The integrated EchoFX software automatically analyzes the echo profile and suggests optimal parameter settings, significantly reducing commissioning time. The device features a clear, rotating LCD display with intuitive menu navigation, allowing for easy local operation without requiring specialized radar knowledge.

3. Robust Construction and Safety: The FMD72 is built to withstand harsh industrial environments with a housing rated IP66/IP67 for protection against dust and moisture ingress. It is available with various process connections (flange types) and antenna materials (stainless steel,哈氏合金, or PTFE-coated) to accommodate different process conditions and media compatibilities. The transmitter carries international certifications for use in hazardous areas (ATEX, IECEx) and meets safety integrity level SIL 2 requirements according to IEC 61508/61511 standards.

4. Advanced Diagnostics and Connectivity: The device offers comprehensive diagnostic capabilities that monitor both device health and process conditions. It can detect potential issues such as antenna buildup, signal strength reduction, or changing process conditions. The FMD72 supports multiple communication protocols including 4...20 mA HART, PROFIBUS PA, and Foundation Fieldbus, enabling seamless integration into existing control systems and asset management platforms.

5. Application Versatility: The transmitter handles a wide range of applications including aggressive chemicals, hydrocarbons, interfaces between immiscible liquids, and liquids with foam or turbulence. Its high frequency allows for installation in nozzles as small as 2 inches and enables measurements in vessels with limited clearance. The device is suitable for pressures up to 40 bar and temperatures from -40 to 200°C, covering most industrial process conditions.

The Cerabar FMD72 operates in the 80 GHz frequency range (78-82 GHz) with a measuring range of up to 120 meters depending on the antenna type and process conditions. It features a response time of less than 1 second and a measurement update rate of approximately 1 second. The device offers various antenna options including horn antennas (different sizes for various applications), parabolic antennas for longer ranges, and array antennas for small nozzles or difficult installation conditions.

The FMD72 is designed for easy installation with flexible mounting options including standard flanges, bridles, and custom mounting arrangements. The narrow beam angle allows for installation in crowded vessels and minimizes the need for stilling pipes or wave guides in most applications. Maintenance requirements are minimal due to the non-contact measurement principle and robust construction. The integrated diagnostics provide early warnings of potential issues, enabling predictive maintenance strategies and reducing unplanned downtime.

The Endress+Hauser Cerabar FMD72 represents a sophisticated solution for challenging level measurement applications where reliability and accuracy are critical. Its advanced 80 GHz radar technology, combined with intelligent signal processing and user-friendly operation, makes it suitable for both simple and complex measurement tasks across diverse industries. The transmitter's robust design, comprehensive safety certifications, and advanced diagnostic capabilities ensure long-term reliable operation while reducing maintenance costs and improving process safety. For engineers seeking a future-proof radar level transmitter that delivers exceptional performance in demanding conditions, the Cerabar FMD72 stands as an excellent choice that combines cutting-edge technology with practical application expertise.