Level Measurement in Polypropylene/ Polyethylene Plastics Production
Accurately measure PP/PE levels in finished product storage silos despite low dielectric constants.
Reliable Level Measurement with Radar Technology and Switches
Polyethylene (PE) and polypropylene (PP) are thermoplastic polymers created from the polymerization of ethylene and propylene, which are products of petrochemical plants. They are two of the most produced plastics with a multitude of applications. After production, the final granular product is stored in silos before being shipped to plastic product manufacturing plants or packed in bags.
The key application challenges is that PP and PE pellets have a low dielectric constant, and the environment can be quite dusty, leading to issues with build-up and risk of static heat and charges. That is why 80 GHz Radar Level Transmitters are recommended for this application.
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Product Solutions
The Rosemount 3408 Non-Contacting Radar Level Transmitter is a versatile FMCW radar, which features Smart Echo Supervision™ technology, and is suitable for level measurement and overfill prevention in many industries, including chemical. Smart features save time and maximize efficiency for trouble-free operations, simplifying commissioning, operation and testing. Smart diagnostics help you proactively plan maintenance and optional Bluetooth® connectivity allows convenient configuration and maintenance. Manual or automatic verification at scheduled intervals can be conducted from the control room at any time without process interruptions. Perform proof-testing remotely and in-situ with onboard functionality. NAMUR type tested and third party certified to IEC61508 for use in safety critical applications.
- With Smart Echo Supervision™ technology, Rosemount Non-Contacting Radars automatically track all echoes, including those from obstructions in the vessel, and distinguish them from the real product surface echo. This ensures the true product level is reliably and accurately reported.
- Lens antenna available for very small process fittings (3/4") and with optional bracket mount
- All PTFE wetted parts allow for use in harsh conditions, such as corrosive medias
The Rosemount 5300 Level Transmitter is ideal for challenging measurements on liquids, slurries, and solids, offering state of the art reliability and safety features in level and interface applications. Rosemount 5300 offers several advantages such as easy installation, no need for calibration, and is unaffected by process conditions. Also, it is SIL 2 certified making it your first choice for safety applications. It has a robust construction and features powerful built-in diagnostics allowing you to focus on the essential part - your plant.
- Direct Switch Technology gives increased sensitivity, high reliability, and long measurement ranges
- Signal Quality Metrics gives you the ability to work proactively with your level instrumentation
- Probe End Projection offers greater level measurement reliability
The Rosemount 2521 Solids Level Switch is suitable for fine-grained and powdered media in storage and process vessels where high sensitivity is needed. It is a robust technology with high sensitivity and is easy to operate. It has flexible options via configurable specifications for different applications. With an adjustable switching delay, false switching can be prevented.
- Measurement of light media that require high sensitivity adjustment
- Adjustable switching delay prevents false switching
- Reliable, simple and maintenance free measurement principle
The Rosemount 2501 Solids Level Switch withstands heavy loads and extreme temperatures, and is suitable for full, demand or empty detection for all bulk media in all types of vessel. It is a simple, robust and reliable technology that is insensitive to dust, electrical charge, adhesion, extreme temperature and pressure. It is simple to install and can be mounted in a vertical, horizontal or oblique position.
- Robust paddle design able to withstand heavy loads and extreme temperatures
- Mechanically stable shaft bearing design
- Unaffected by dust, electrostatic charging and caking
