Solids Level Measurement for Stored Polymers in Plastic Compounding Production
Accurately and reliable measure storage levels of low-dielectric polymers in polymerization plant silos.
Continuous Level Measurement with Radar Technologies
The most common polymers (PET, PE, PVC, PP) are produced in a polymerization plant. The compounding process changes the physical, thermal, electric, or visual characteristics of the plastic. Polymer pellet/powder materials are delivered to the plant in bags, or loaded to the storage silos from trucks. For compounding production, these materials are transferred from the storage silos to the molding area via smaller batch silos. The pellets/powders and possible additives are then molded into the final product. PP and PE pellets have a low dielectric constant creating challenges in achieving accurate level measurement. 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 technology 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.
- Low 12V dc lift-off voltage
- Immune to intermittent power loss
- Unique PTFE seal design eliminates the need for o-rings
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
