Measuring the CO (NO) concentration
It is important to ensure that the gas concentrations in the tunnel do not exceed the defined limits. So to provide a continuous measurement of the CO (NO) concentration in the tunnel air, the VISIC100SF tunnel sensor is also equipped with electrochemical sensors. These electrochemical sensors meet the requirements of EN 50545. When it comes to measurement quality and maintenance complexity, they are on a par with infrared measuring systems.