The Heat Eye is a new instrument providing second-by-second information on the Ash, Moisture and Nett Calorific Value (Nett CV) of conveyed coal. This gives the principal benefit of providing higher quality product with a consistent Nett CV – with obvious savings in time and money.
It comprises a Bretby Gammatech Ash Eye (updated NGCQM) fully integrated with a Moisture Monitor (eg the Callidan MA-500).
The Heat Eye contains no radioactive sources – it uses Natural Gamma and Microwave Technology.
Principle of operation
The Heat Eye combines the instantaneous ash and moisture measurements to obtain an instantaneous “total innerts” value. This total innerts value is converted into Nett CV by using a calibration based upon the correlation of total innerts with Nett CV previously measured by conventional means.