Level Measurement in Polypropylene/ Polyethylene Plastics Production
Accurately measure PP/PE levels in finished product storage silos despite low dielectric constants.
Continuous Level Measurement with Radar Technologies
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 commonly 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 challenge is that PP and PE pellets have a low dielectric constant. Guided wave and non-contacting radar technologies perform expertly and reliably under these conditions.
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Product Solutions
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
Accuracy
± 0.12 in. (3 mm)
Repeatability
± 0.04 in. (1 mm)
Measurement Range
Up to 164 ft (50 m)
The Rosemount 2555 Solids Level Switch is robust and suitable for all solids bulk media in all types of vessels. It can be used for full, demand or empty detection and is designed for low dielectric medias and extreme conditions such as high temperatures, high mechanical stress and high tensile forces.
- Suitable for most bulk materials in various applications even with high temperature and pressure
- "Active Shield Technology" protects against media build up or caking to ensure complete reliability
- Measurement of medias with dielectric constant down to 1.5
Operating Pressure
363 psi (25 bar)
Operating Temperature
-40 to 932°F (-40 to 500°C)
Certifications/Approvals
CE, ATEX, IECEx, FM, FMc, EHEDG
The Rosemount™ 5408 Non-Contacting Radar Level Transmitter uses enhanced technology and Human Centered Design to deliver accurate, reliable measurements on both liquid and solid materials. Using two-wire FMCW and Smart Echo Supervision technologies, the Rosemount 5408 deploys a continuous echo to maximize radar signal strength and produce a more robust and reliable measurement. Delivering ease-of-use at every touch point, the Rosemount 5408 uses an intuitive software interface to guide the operator through installation, commissioning, proof-testing and maintenance. Powerful onboard diagnostics suite proactively monitors transmitter health and alerts if there is an issue. Safety certified to IEC 61508 for SIL 2 applications, the Rosemount 5408:SIS reduces cost of risk, increases efficiency and protects people and the environment.
- 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.
- Low 12V dc lift-off voltage
- Immune to intermittent power loss
Accuracy
Standard: ± 0.08 in. (± 2 mm)
Ultra accuracy: ± 0.04in. (± 1mm)
Ultra accuracy: ± 0.04in. (± 1mm)
Measurement Range
492 ft (150m), 82 ft (25 m) for Rosemount 5408:SIS in Safety mode
Operating Pressure
-15 to 1450 psi (-1 to 100 bar)
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
Operating Pressure
232 psi (16 bar)
Operating Temperature
-40 to 302°F (-40 to 150 °C)
Certifications/Approvals
CE, ATEX, IECEx, FM, CSA
