- Distributed control system
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Industrial applications
- For Pulp
- For Board & Paper
- For Tissue
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For Energy
- Multifuel and biomass
- Waste-to-energy
- Combined heat and power
- Combined cycle and gas
- Hydro
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Applications
- Turbine automation
- Process optimization
- Energy management
- Fuel management
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Performance monitoring and reporting
- Plant operation
- Boiler performance
- System monitoring and reporting for turbines
- Steam turbine performance
- Gas turbine performance
- HRSG performance
- Pumps and fans performance
- Heat exchanger performance
- Operation point deviation
- Gas turbine wash
- Fatigue and creep
- Boiler sootblowing
- Boiler life
- Asset monitoring
- Emission monitoring and reporting
- For Marine
- For Alternative fuels
- Quality management
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Analyzers and measurements
- Inline sensors
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Analyzers
- Brown Stock Quality Analyzer
- Chip 'n' Bark Moisture Analyzer
- Recovery Ash Analyzer
- Recovery Liquor Analyzer
- Dirt Count Analyzer
- Fiber Image Analyzer
- Fiberline Analyzer
- Paper Lab
- MR Moisture Analyzer
- Pulp Expert
- Fiber Furnish Analyzer
- Retention Measurement
- Stand-Alone Retention Control
- Wet End Analyzer
- Corrosion Reduction Analyzer
- Cooking Liquor Analyzer
- Samplers
- Consistency
- Conductivity
- Boiler diagnostics systems
- Wastewater
- Vibration
- Condition monitoring
- Industrial Internet
- Automation projects
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Automation services
- Spare parts
- Maintenance and technical support
- Cybersecurity services
- Upgrades and lifecycle services
- Condition monitoring services
- Process performance services
- Learning services
- Service agreements
- Automation
- Quality management
- Quality control system (QCS)
- Measurements
- Caliper
- Web Caliper Measurement
Valmet IQ Web Caliper Measurement
The accurate scan averages and high-resolution CD profiles measured by Valmet IQ Web Caliper Measurement (IQ Web Caliper) provide a solid foundation for Valmet’s cross-direction caliper profile controls for paper sheets and machine-direction caliper control for boards. Digital signal processing, coil construction and platen pressure control ensure maximum accuracy.
Features
The variable magnetic field established between a stationary energized coil and a floating platen is a very sensitive indication of sheet caliper. As the sheet caliper varies, the magnetic linkage between the two elements varies as well.
The high frequency energized microcoil system in the detector head is sapphire coated for long life. Temperature-compensated coil construction minimizes temperature sensitivity.
The low-mass floating platen is attached to a pliable membrane supported by an air cushion. This low-inertia design allows the platen to respond quickly to caliper variations. The contact pressure is precisely and quickly controlled by a dedicated microprocessor to exert a steady pressure on the sheet for stable readings.
The floating platen’s mass and contact area are customized to the grade of paper for the best performance from lightweight papers to heavy boards. The platens are coated with a sapphire composite material for long lifetimes.
Benefits
- More accurate and stable on-sheet measurements for precise control of MD and CD properties.
- Precise streak control using 1 cm resolution profiles, available after the very first sheet scan.
- Low mass, light-touch sensing element does not affect sheet runnability.
- Faster on-spec quality and reduced startup waste.
Valmet IQ Optical Caliper Measurement
Sub-micron caliper measurement accuracy at the highest resolution and scanning speed lead to more accurate and stable onsheet measurement and more precise control of MD and CD properties.