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The new concept of aspirated smoke detection pioneered by Dr Cole involves drawing a continuous sample of air to a single detector of very high sensitivity. Each system is designed so that this air sample faithfully represents the air quality throughout a designated fire zone.

Typically such a system involves a number of small-bore pipes distributed across a ceiling (fixed above or below). Sampling holes are drilled into each pipe at suitable intervals. Air is continuously drawn into the pipes via all of the holes, towards the centrally located detector using an air suction pump (aspirator).

Based upon an extensive PhD research program, computer software was written by Dr Cole to simulate all the elements and sizes of such a system, to enable the response times and sensitivities throughout the zone to be optimised.

In an alternative arrangement, the detector may be coupled to an existing ventilation system (mechanical service), drawing a continuous air sample from a duct. The high sensitivity of the detector is designed to overcome the smoke dilution caused by mixing with fresh air in the duct.

Site trials of aspirated smoke detection commenced in Australia in the late 1970's. Based upon its early success, the world market was pioneered by Dr Cole and his staff from 1983 onwards, to a very sceptical and conservative fire industry. Marketing persistence and improving technical performance maintained the company's market leadership and gained more than 50,000 sites for the system by mid 1998.Today, a revolutionary new concept in aspirated smoke detection is being released by imRAC Pty Ltd. This CID product represents the next generation of very sensitive smoke detectors, offering features that were previously unobtainable. Watch this page for further announcements.