Profile NET Brochure Our Office Sales Conditions Exhibitions News Newsletter Contact Us Home Products Gas Selection Applications Certifications Parkings and Tunnels Until electric cars would finally take over, the presence of vehicles in underground or otherwise confined parking structures, tunnels, loading docks, and warehouses represent a constant source of airborne contaminants – notably CO, NO2 oil and gasoline fumes. These gases are obviously undesirable and there are several reasons to monitor them and prevent possible buildups through air changes and ventilation. The number one reason is, of course, safety. With both workers and public involved, parking managers must ensure a safe breathing environment. Carbon Monoxide is extremely toxic, can cause dizziness and headaches over 200ppm and can kill in a short time when concentrations overpass 3000ppm. Prolonged exposure to high levels of Nitrogen Dioxide, on the other side, can cause chronic bronchitis and emphysema. NO2 is the major contaminant to be considered when expecting a significant presence of diesel-powered vehicles in the structure. Most international codes and standards, in fact, enforce ventilation as a mean to prevent the risk of reaching dangerous levels of contaminant concentration. They generally aim to maintain a maximum average of CO of 25 to 50 ppm during any eight-hour period, with a maximum average concentration not greater 200 ppm for short term exposures. The ventilation required to adequately disperse CO, is generally enough to keep all other contaminants under check. But keeping a ventilation system running continuously or at fixed intervals irrespective of actual gas concentration is not practical nor efficient, due to energy expenditure, increased wear on the fan motors and consequent increased maintenance. In fact, the second reason to employ a gas detection system and monitor contaminant level is economical. Employing automatic contaminant sensing devices to modulate the ventilation system activation to a minimum would ensure huge cost savings in the long run. Our catalogue NET IR SENSOR IRNET-P 32mm IRNET-P 20mm IRNET-P Low Power IRNEX-P IRNEX-P Low Power IREF 32mm IREF-A IR Accessories NET HEADS NET2X NETC2 NET3X NETC3 NET3PL CYBER HEADS NET HEADS Accessories We'll assume you're ok with this, but you can opt-out if you wish. AcceptRead More Questo sito fa uso di cookie per migliorare l’esperienza di navigazione degli utenti e per raccogliere informazioni sull’utilizzo del sito stesso. Utilizziamo sia cookie tecnici sia cookie di parti terze per inviare messaggi promozionali sulla base dei comportamenti degli utenti. Può conoscere i dettagli consultando la nostra privacy policy qui. Proseguendo nella navigazione si accetta l’uso dei cookie; in caso contrario è possibile abbandonare il sito. CLOSE