Constituent and total ash sensor for IQ Scanners
Valmet IQ X-ray Ash Measurement
The Valmet IQ X-Ray Ash Measurement (IQ X-Ray Ash) provides the simultaneous online measurement of total ash and of each ash constituent individually, enabling exact furnishing control.
Precisely control ash and related quality properties
Lower furnish costs by optimizing ash content and composition
Reduce startup waste and get on-spec faster with real-time ash measurements
Complete ash control
The Valmet IQ X-Ray Ash is factory pre-calibrated for papers containing varying amount of total ash. The ash constituent analysis (Clay, CaCO3, TiO2) provides a solid base for controlling each component in the papermaking furnish. Digital signal processing, high-speed air density temperature compensation and dirt buildup compensation ensure superior sensor accuracy even in hot, humid and dirty environments.
Reliable x-ray sensing
The Valmet IQ X-Ray Ash sensor collects ash measurement details based on the absorption of low-energy X-ray radiation in the measured material. Dedicated detectors measure each ash component – clay, calcium carbonate and titanium.
The effects of air density changes are measured and automatically compensated using high-speed air gap temperature measurements. In addition, internal temperature measurements within the source and detector heads are used for diagnostics
