September 2001

Patent for Insulated Electrodynamic Dust Sensor

PCME's technological leadership in the field of particulate and dust emission monitoring, has been rewarded with the grant of its 7th worldwide patent. US Patent 6,192,74 covers the invention and use of a fully ruggedised insulated Electrodynamic dust sensor. The patent provides intellectual property protection for the key technology that permits PCME's sensors to operate reliably in humid and aggressive environment stacks. These conditions are commonly found after process and spray driers (e.g. milk, detergent and ceramic production) and applications with highly conductive dusts (carbon black and metals production). The technology overcomes many of the problems which afflict non-insulated sensors due to sensor bridging.