The Emerson Rosemount 5408 is a compact, high-performance, non-contacting radar level transmitter designed specifically for reliable and accurate level measurement in small tanks and a diverse range of process applications. Engineered with the core technology of the renowned Rosemount 5400 Series, it brings exceptional measurement integrity to spaces where a smaller form factor is essential, without compromising on the advanced features expected from a market leader. Its two-wire, loop-powered design simplifies installation and makes it an ideal, cost-effective solution for chemical processing, water and wastewater, food and beverage, and pharmaceutical industries.
Utilizing Frequency Modulated Continuous Wave (FMCW) radar technology, the Rosemount 5408 delivers superior performance compared to pulse radar or ultrasonic devices. The FMCW principle involves transmitting a continuous radar signal with a frequency that changes linearly over time. The reflected signal from the product surface is then compared to the signal currently being transmitted. The difference in frequency between these two signals is directly proportional to the distance to the product level. This sophisticated method results in an extremely high signal-to-noise ratio, providing exceptional measurement accuracy and stability even in the presence of vessel obstructions, aggressive vapors, light foam, or turbulent surfaces. This makes it highly effective in applications where other technologies often fail.
| Section | Details |
|---|---|
| Product Role | Compact, high-performance non-contacting radar level transmitter for small tanks and diverse process applications.Based on Rosemount 5400 Series technology, designed for accuracy + reliability in limited-space installations. |
| Design & Power | Two-wire, loop-powered design → simplifies installation, lowers cost.Ideal for chemical, water/wastewater, food & beverage, pharmaceutical industries. |
| Measurement Technology | FMCW (Frequency Modulated Continuous Wave) radar:• Transmits continuous signal with linearly varying frequency.• Measures frequency difference between transmitted & reflected signals → directly proportional to product level.• Delivers high signal-to-noise ratio, exceptional accuracy and stability.• Outperforms pulse radar and ultrasonic devices. |
| Performance in Challenging Conditions | Maintains accuracy in:• Vessels with obstructions (pipes, agitators, coils).• Aggressive vapors, light foam, turbulence.• Applications where other technologies often fail. |
| Signal Processing & Configuration | • Advanced echo processing: automatically identifies true product echo, ignores false echoes.• User-friendly setup via: - Tap-operated local interface - Emerson AMS Device Manager - HART communicator• Supports echo curve analysis, reducing commissioning time and maintenance. |
| Mechanical Design | • Compact, lightweight → fits small nozzles and tight spaces.• Robust construction for durability.• Optional polypropylene antenna for highly corrosive chemical applications. |
| Safety & Approvals | Certified for hazardous areas:• ATEX• IECEx• FM |
| Communication Protocols | • Standard: 4-20 mA HART• Optional: PROFIBUS PA, FOUNDATION Fieldbus→ Enables digital integration into modern control systems. |
| Applications | • Small tanks & process vessels.• Storage tanks in harsh environments.• Processes affected by condensation, coating, vapors. |
| Summary | A versatile, compact, and economical radar transmitter:• High accuracy + reliability in small-scale applications.• Reduces maintenance, improves safety, and enhances process efficiency.• Packs the advanced capability of larger instruments into a smaller, cost-effective form. |
A key strength of the Rosemount 5408 lies in its advanced in-built signal processing and intuitive configuration tools. The transmitter features sophisticated echo processing software that automatically identifies and locks onto the true product echo while effectively ignoring false echoes from fixed obstructions like pipes, agitators, or heating coils. This ensures a stable and reliable measurement from the moment it is commissioned. Users can easily configure and diagnose the device through its integrated, tap-operated local interface or remotely using the Emerson AMS Device Manager software or a HART communicator. This allows for quick setup, detailed echo curve analysis, and minimal maintenance requirements, reducing overall operational costs.
The design of the 5408 is focused on durability and ease of use. Its compact and lightweight form factor allows for installation in areas with limited space, such as on small nozzles. It is constructed with robust materials, including a polypropylene antenna option for highly corrosive chemical applications, ensuring longevity in harsh environments. The device is also designed for utmost safety, holding international approvals for use in hazardous areas, including ATEX, IECEx, and FM standards. Furthermore, the Rosemount 5408 supports multiple communication protocols. While inherently a 4-20 mA HART device, it is also available with PROFIBUS PA or Foundation Fieldbus capabilities, enabling seamless and digital integration into modern automated control systems for enhanced data collection and device management.
In summary, the Emerson Rosemount 5408 is a versatile and powerful radar level transmitter that packs the technological prowess of larger instruments into a compact and economical package. It solves the complex level measurement challenges prevalent in smaller process vessels and storage tanks, offering a reliable alternative to technologies plagued by condensation, coating, or vapor interference. By providing accurate data, reducing maintenance needs, and ensuring process safety, the Rosemount 5408 empowers industries to optimize their operations, improve product quality, and enhance overall efficiency.
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