With over 30 years of experience, Acoem Dynoptic (Dynoptic Systems Ltd incorporating Tunnel Sensors) has established itself a recognised specialist in the design and manufacture of high technology instrumentation for gas and air quality monitoring. We offer an innovative range of opacity, dust, particulate and smoke monitors to suit a variety of continuous gas emission applications, such as boilers, filter bag houses, incinerators and other industrial and marine processes. Founded in 1979 as an independent electronics design house; a role that DynOptic Systems still fulfils today; the business evolved to become an electronics development company designing circuits and embedded software for leading industry clients. With increasing interest in environmental issues and new international legislation, DynOptic Systems identified a need for cost effective yet reliable continuous emissions monitoring equipment and this lead to the design and manufacture of our own comprehensive range of instrumentation. Our Philosophy is to provide our customers with a quality, yet affordable, range of opacity, dust and smoke monitors, together with our commitment to maintaining a multidiscipline engineering team capable of supporting its customer’s needs. Continuing the Company's tradition in developing new and innovative products, in 2005 Tunnel Sensors was formed, manufacturing a range air pollution monitoring equipment designed specifically for the tunnel market. For further information please visit www.tunnelsensors.com.