March 2022. Detection of toxic gases CO and NO2, anemometers and opacimeters.
On the A-2 HEMUS highway is the Echemishka Tunnel. It has a length of 765 meters. It has been in operation since 1984 and today, after repair and rehabilitation work in stages to guarantee safety, it is now fully passable through the two ducts. In the repair of the road, tunnels and viaducts of this motorway, an approximate budget of 240 million LEV has been had.
For the detection of toxic gases, the DURTOX 4-20mA CO and NO2 detectors manufactured by Durán Electrónica have been chosen, and for environmental control, anemometers and opacimeters distributed by Durán Electrónica.