Granule processing

Foto by Alexander Grey on Unsplash
The effective drying and dedusting of plastic granules is essential for the production of high-quality plastic parts. Often, the granules are already contaminated with dust and fibers (also known as angel hair) due to abrasion during delivery. These impurities can lead to quality defects in the end product, especially in products that require high optical quality or a high-gloss finish. In severe cases, such impurities can even cause product jams and thus downtime of production facilities. Our pressure measurement technology offers precise monitoring of the vacuum in dedusting systems to minimize such risks.
Another critical aspect is the adequate drying of hygroscopic thermoplastics to bring them to an optimal residual moisture content for processing. This is achieved through special air treatment, which ensures an extremely low dew point and thus a minimal absolute water content. WIKA’s temperature measurement devices contribute to an energy-efficient operation of the drying plants, while our level measurement devices control the material fill level in the drying container. Pressure gauges, on the other hand, ensure efficient air conveyance through the blower.
- Reliable and cost-effective
- Design per EN 837-1 or ASME B40.100
- Nominal size 40 [1 ½"], 50 [2"], 63 [2 ½"], 80 [3"], 100 [4"] and 160 [6"]
- Scale ranges to 0 ... 400 bar [0 ... 6,000 psi]
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- Long service life, robust
- Cost-effective and reliable
- To combine with WIKA diaphragm seals
- German Lloyd approval
- Scale ranges up to 0 … 1,000 bar
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- Good/bad indication through parameterisable digital display (red/green)
- Compact size enables easy installation in narrow spaces
- Optimised design makes OEM machine integration easier
- Designed for rough demands of up to 50 g shock and -40 ... +125 °C [-40 ... +257 °F]
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- Adjustable switch hysteresis
- Setting ranges: 0.2 … 2 bar [3 ... 30 psi] to 30 ... 320 bar [450 ... 4,600 psi] and -0.85 ... -0.15 bar [-25 inHg ... -5 inHg]
- Non-repeatability of the switch point: ≤ 2 %
- Switching functions: Normally closed, normally open or change-over contact
- Media: Compressed air, neutral and self-lubricating fluids and neutral gases
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- Zero point setting in front
- Special connection location on request
- Low scale ranges from 0 ... 25 mbar
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- Measuring ranges from 0 … 0.05 to 0 … 1,000 bar
- Non-linearity 0.25 % or 0.5 %
- Output 4 ... 20 mA, DC 0 ... 10 V, DC 0 ... 5 V and others
- Electrical connection: Angular connector form A and C, circular connector M12 x 1, cable outlet 2 m
- Process connection G ¼ A DIN 3852-E, ¼ NPT and others
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- Wetted parts from stainless steel
- Resistant to all common refrigerants
- Special case design for the best possible condensation tightness
- Private labelling possible
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- Industry 4.0-ready IO-Link sensor improves connectivity and diagnostics
- Designed for rough demands of up to 1,000 g shock and -40 ... +125 °C [-40 ... +257 °F]
- Optimised design makes OEM machine integration easier
- Multicolour 360° LED status display simplifies troubleshooting and localisation
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- Measuring ranges from 0 ... 6 bar to 0 ... 600 bar
- Non-linearity 0.5 %
- Standard industrial signals
- Electrical connection: Angular connector form A and C, circular connector M12 x 1, Metri-Pack series 150, cable outlet 2 m unshielded or shielded
- Many internationally customary process connections
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- Measurement ranges 0 ... 3 kg up to 0 ... 250 kg
- Made of aluminum alloy
- High accuracy
- High side load tolerance
- Simple structure, easy to install
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- Measuring ranges 0 … 20 kg up to 0 ... 500 kg
- Made of aluminum
- High accuracy
- Insensitive to side and corner loads
- Simple structure, easy to install
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- Measuring ranges 0 … 0.3 kg up to 0 ... 10 kg
- Made of aluminum alloy
- High accuracy
- Insensitive to side and corner loads
- Simple structure, easy to install
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- Measuring ranges 0 … 500 kg up to 0 ... 10.000 kg
- Steel/stainless steel
- High long-term stability
- High side load tolerance
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- Measuring ranges 0 … 5 kg up to 0 ... 500 kg
- Completely welded bellows
- Protection class IP68
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- Measuring ranges 0 ... 2 kN up to 0 ... 100 kN
- Corrosion-resistant stainless steel design
- Integrated amplifier
- High long-term stability, high shock and vibration resistance
- Good reproducibility, simple installation

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- Accuracy class 2 per EN 13190
- Nominal size 63, 80, 100 and 160
- Scale ranges from -30 ... +200 °C
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- Scale ranges from -30 ... +500 °C
- Large choice of nominal sizes from 25 ... 160 mm
- Case and stem from stainless steel
- 5 different connection designs
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