The sensors measure moisture in pulverised fuel ash (PFA) and PFA slurry. When using PFA as a cementitious material the sensors are used to control the correct dry weight of material used in the process. They may also be used to measure in PFA slurry to improve control when manufacturing products such as autoclaved lightweight block. This ensures correct and and consistent water cement and PFA ratios.
Moisture measurement in wood pellets.
To monitor and control the feed rate of wood pellets into industrial burners.
The moisture content of coal may be measured. Pulverised Coal Injection is a common method of burning low grade or low carbon coal to create electricity. Small particle size low grade coal is measured as it is injected into the burners. The rate of injection is a direct function of the moisture content of the coal. As the material becomes drier the throughput is reduced to avoid serious overheating which can result in very significant financial loss and plant downtime.